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Table of Contents
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 10-Q
(mark one)

☒ | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2021
or

☐ | TRANSITION REPORT PURSUANT TO SECTION 13 OF 15(d) OF THE SECURITIES AND EXCHANGE ACT OF 1934

For the transition period from ____ to ____
Commission File Number: 000-31225
Pinnacle Financial Partners Inc.
, Inc.

(Exact name of registrant as specified in its charter)
Tennessee |  | 62-1812853
(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)
150 Third Avenue South, Suite 900 | Nashville, | TN |  | 37201
(Address of principal executive offices) |  | (Zip Code)

(615) 744-3700

(Registrant's telephone number, including area code)
Not Applicable

(Former name, former address and former fiscal year, if changes since last report)
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☒ No ☐
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for shorter period that the registrant was required to submit such files). Yes ☒ No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definitions of "large accelerated filer", "accelerated filer", "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act. (Check one):
Large Accelerated Filer ☒ Accelerated Filer ☐
Non-accelerated Filer ☐ Smaller reporting company ☐
(do not check if you are a smaller reporting company) Emerging growth company ☐
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes ☐ No ☒
Securities registered pursuant to Section 12(b) of the Exchange Act:

Title of Each Class | Trading Symbol | Name of Exchange on which Registered
Common Stock, par value $1.00 | PNFP | The Nasdaq Stock Market LLC
Depositary Shares (each representing 1/40th interest in a share of 6.75% Fixed-Rate Non-Cumulative Perpetual Preferred Stock, Series B) | PNFPP | The Nasdaq Stock Market LLC

As of April 30, 2021 there were 76,094,901 shares of common stock, $1.00 par value per share, issued and outstanding.

Table of Contents
Pinnacle Financial Partners, Inc.
Report on Form 10-Q
March 31, 2021

TABLE OF CONTENTS | Page No.
PART I – Financial Information: | 4
Item 1. Consolidated Financial Statements (Unaudited) | 4
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations | 35
Item 3. Quantitative and Qualitative Disclosures about Market Risk | 57
Item 4. Controls and Procedures | 57
PART II – Other Information: | 57
Item 1. Legal Proceedings | 58
Item 1A. Risk Factors | 58
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds | 58
Item 3. Defaults Upon Senior Securities | 58
Item 4. Mine Safety Disclosures | 58
Item 5. Other Information | 58
Item 6. Exhibits | 58
Signatures | 60

2

Table of Contents
FORWARD-LOOKING STATEMENTS
All statements, other than statements of historical fact, included in this report, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. The words "expect," "anticipate," "intend," "may," "should," "plan," "believe," "seek," "estimate" and similar expressions are intended to identify such forward-looking statements, but other statements not based on historical information may also be considered forward-looking statements. These forward-looking statements are subject to known and unknown risks, uncertainties and other factors that could cause the actual results to differ materially from the statements, including, but not limited to: (i) deterioration in the financial condition of borrowers of Pinnacle Bank and its subsidiaries or BHG resulting in significant increases in loan losses and provisions for those losses and, in the case of BHG, substitutions; (ii) the effects of the emergence of widespread health emergencies or pandemics, including the magnitude and duration of the COVID-19 pandemic and its impact on general economic and financial market conditions and on Pinnacle Financial's and its customers' business, results of operations, asset quality and financial condition; (iii) the speed with which the COVID-19 vaccines can be widely distributed, decisions of governmental agencies to pause the use of one or more vaccines, those vaccines' efficacy against the virus and public acceptance of the vaccines; (iv) the failure of announced or anticipated stimulus programs to be timely approved, or approved at all, or the failure of such programs to provide sufficient relief when approved, and the resulting impact on the economy and our customers and their businesses; (v) the inability of Pinnacle Financial, or entities in which it has significant investments, like BHG, to maintain the long-term historical growth rate of its, or such entities', loan portfolio; (vi) changes in loan underwriting, credit review or loss reserve policies associated with economic conditions, examination conclusions, or regulatory developments; (vii) effectiveness of Pinnacle Financial's asset management activities in improving, resolving or liquidating lower-quality assets; (viii) the impact of competition with other financial institutions, including pricing pressures and the resulting impact on Pinnacle Financial’s results, including as a result of compression to net interest margin; (ix) adverse conditions in the national or local economies including in Pinnacle Financial's markets throughout Tennessee, North Carolina, South Carolina, Georgia and Virginia, particularly in commercial and residential real estate markets; (x) fluctuations or differences in interest rates on loans or deposits from those that Pinnacle Financial is modeling or anticipating, including as a result of Pinnacle Bank's inability to better match deposit rates with the changes in the short-term rate environment, or that affect the yield curve; (xi) the results of regulatory examinations; (xii) Pinnacle Financial's ability to identify potential candidates for, consummate, and achieve synergies from, potential future acquisitions; (xiii) difficulties and delays in integrating acquired businesses or fully realizing costs savings and other benefits from acquisitions; (xiv) BHG's ability to profitably grow its business and successfully execute on its business plans; (xv) risks of expansion into new geographic or product markets; (xvi) the ability to grow and retain low-cost core deposits and retain large, uninsured deposits, including during times when Pinnacle Bank is seeking to lower rates it pays on deposits; (xvii) any matter that would cause Pinnacle Financial to conclude that there was impairment of any asset, including goodwill or other intangible assets; (xviii) the ineffectiveness of Pinnacle Bank's hedging strategies, or the unexpected counterparty failure or hedge failure of the underlying hedges; (xix) reduced ability to attract additional financial advisors (or failure of such advisors to cause their clients to switch to Pinnacle Bank), to retain financial advisors (including as a result of the competitive environment for associates) or otherwise to attract customers from other financial institutions; (xx) deterioration in the valuation of other real estate owned and increased expenses associated therewith; (xxi) inability to comply with regulatory capital requirements, including those resulting from changes to capital calculation methodologies, required capital maintenance levels or regulatory requests or directives, particularly if Pinnacle Bank's level of applicable commercial real estate loans were to exceed percentage levels of total capital in guidelines recommended by its regulators; (xxii) approval of the declaration of any dividend by Pinnacle Financial's board of directors; (xxiii) the vulnerability of Pinnacle Bank's network and online banking portals, and the systems of parties with whom Pinnacle Bank contracts, to unauthorized access, computer viruses, phishing schemes, spam attacks, human error, natural disasters, power loss and other security breaches; (xxiv) the possibility of increased compliance and operational costs as a result of increased regulatory oversight (including by the Consumer Financial Protection Bureau), including oversight of companies in which Pinnacle Financial or Pinnacle Bank have significant investments, like BHG, and the development of additional banking products for Pinnacle Bank's corporate and consumer clients; (xxv) the risks associated with Pinnacle Financial and Pinnacle Bank being a minority investor in BHG, including the risk that the owners of a majority of the equity interests in BHG decide to sell the company or all or a portion of their ownership interests in BHG if not prohibited from doing so by Pinnacle Financial or Pinnacle Bank; (xxvi) the possibility of increased personal or corporate tax rates and the resulting reduction in our and our customers' businesses as a result of any such increases; (xxvii) changes in state and federal legislation, regulations or policies applicable to banks and other financial service providers, like BHG, including regulatory or legislative developments; (xxviii) the availability of and access to capital; (xxiv) adverse results (including costs, fines, reputational harm, inability to obtain necessary approvals and/or other negative effects) from current or future litigation, regulatory examinations or other legal and/or regulatory actions, including as a result of Pinnacle Bank's participation in and execution of government programs related to the COVID-19 pandemic; and (xxx) general competitive, economic, political and market conditions. Additional factors which could affect the forward looking statements can be found in Pinnacle Financial's Annual Report on Form 10-K, Quarterly Reports on Form 10-Q (including this report), and Current Reports on Form 8-K filed with the SEC and available on the SEC's website at http://www.sec.gov. Pinnacle Financial disclaims any obligation to update or revise any forward-looking statements contained in this report, which speak only as of the date hereof, whether as a result of new information, future events or otherwise.
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Item 1. | Part I. Financial Information

PINNACLE FINANCIAL PARTNERS, INC. AND SUBSIDIARIES
CONSOLIDATED BALANCE SHEETS
(Unaudited)

(dollars in thousands, except per share data) | March 31, 2021 |  | December 31, 2020
ASSETS |  |  |
Cash and noninterest-bearing due from banks | $ | 189,251 |  |  | $ | 203,296 |
Restricted cash | 162,834 |  |  | 223,788 |
Interest-bearing due from banks | 2,780,137 |  |  | 3,522,224 |
Federal funds sold and other | 55,186 |  |  | 12,141 |
Cash and cash equivalents | 3,187,408 |  |  | 3,961,449 |
Securities purchased with agreement to resell | 450,000 |  |  | — |
Securities available-for-sale, at fair value | 3,677,019 |  |  | 3,586,681 |
Securities held-to-maturity (fair value of $1.0 billion and $1.1 billion, net of allowance for credit losses of $198 and $191 at March 31, 2021 and Dec. 31, 2020, respectively) | 1,014,345 |  |  | 1,028,359 |
Consumer loans held-for-sale | 85,769 |  |  | 87,821 |
Commercial loans held-for-sale | 12,541 |  |  | 31,200 |
Loans | 23,086,701 |  |  | 22,424,501 |
Less allowance for credit losses | (280,881) |  |  | (285,050) |
Loans, net | 22,805,820 |  |  | 22,139,451 |
Premises and equipment, net | 289,515 |  |  | 290,001 |
Equity method investment | 327,512 |  |  | 308,556 |
Accrued interest receivable | 98,477 |  |  | 104,078 |
Goodwill | 1,819,811 |  |  | 1,819,811 |
Core deposits and other intangible assets | 40,130 |  |  | 42,336 |
Other real estate owned | 10,651 |  |  | 12,360 |
Other assets | 1,480,707 |  |  | 1,520,757 |
Total assets | $ | 35,299,705 |  |  | $ | 34,932,860 |
LIABILITIES AND SHAREHOLDERS' EQUITY |  |  |
Deposits: |  |  |
Noninterest-bearing | $ | 8,103,943 |  |  | $ | 7,392,325 |
Interest-bearing | 5,814,689 |  |  | 5,689,095 |
Savings and money market accounts | 11,361,620 |  |  | 11,099,523 |
Time | 3,012,688 |  |  | 3,524,632 |
Total deposits | 28,292,940 |  |  | 27,705,575 |
Securities sold under agreements to repurchase | 172,117 |  |  | 128,164 |
Federal Home Loan Bank advances | 888,115 |  |  | 1,087,927 |
Subordinated debt and other borrowings | 671,002 |  |  | 670,575 |
Accrued interest payable | 15,359 |  |  | 24,934 |
Other liabilities | 300,648 |  |  | 411,074 |
Total liabilities | 30,340,181 |  |  | 30,028,249 |
Shareholders' equity: |  |  |
Preferred stock, no par value, 10.0 million shares authorized; 225,000 shares non-cumulative perpetual preferred stock, Series B, liquidation preference $225.0 million, issued and outstanding at March 31, 2021 and Dec. 31, 2020, respectively | 217,126 |  |  | 217,126 |
Common stock, par value $1.00; 180.0 million shares authorized; 76.1 million and 75.9 million shares issued and outstanding at March 31, 2021 and Dec. 31, 2020, respectively | 76,088 |  |  | 75,850 |
Additional paid-in capital | 3,027,311 |  |  | 3,028,063 |
Retained earnings | 1,515,451 |  |  | 1,407,723 |
Accumulated other comprehensive income, net of taxes | 123,548 |  |  | 175,849 |
Total shareholders' equity | 4,959,524 |  |  | 4,904,611 |
Total liabilities and shareholders' equity | $ | 35,299,705 |  |  | $ | 34,932,860 |

See accompanying notes to consolidated financial statements (unaudited).
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PINNACLE FINANCIAL PARTNERS, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF INCOME
(Unaudited)

(dollars in thousands, except per share data) | Three months ended March 31, |  |
| 2021 |  | 2020 |  |  |  |
Interest income: |  |  |  |  |  |  |
Loans, including fees | $ | 227,372 |  |  | $ | 236,420 |  |  |  |  |
Securities: |  |  |  |  |  |  |
Taxable | 7,728 |  |  | 10,268 |  |  |  |  |
Tax-exempt | 15,498 |  |  | 13,824 |  |  |  |  |
Federal funds sold and other | 1,319 |  |  | 2,557 |  |  |  |  |
Total interest income | 251,917 |  |  | 263,069 |  |  |  |  |
Interest expense: |  |  |  |  |  |  |
Deposits | 17,468 |  |  | 50,698 |  |  |  |  |
Securities sold under agreements to repurchase | 72 |  |  | 115 |  |  |  |  |
Federal Home Loan Bank advances and other borrowings | 11,507 |  |  | 18,704 |  |  |  |  |
Total interest expense | 29,047 |  |  | 69,517 |  |  |  |  |
Net interest income | 222,870 |  |  | 193,552 |  |  |  |  |
Provision for credit losses | 7,235 |  |  | 99,889 |  |  |  |  |
Net interest income after provision for credit losses | 215,635 |  |  | 93,663 |  |  |  |  |
Noninterest income: |  |  |  |  |  |  |
Service charges on deposit accounts | 8,307 |  |  | 9,032 |  |  |  |  |
Investment services | 8,191 |  |  | 9,239 |  |  |  |  |
Insurance sales commissions | 3,225 |  |  | 3,240 |  |  |  |  |
Gain on mortgage loans sold, net | 13,666 |  |  | 8,583 |  |  |  |  |
Investment gains on sales, net | — |  |  | 463 |  |  |  |  |
Trust fees | 4,687 |  |  | 4,170 |  |  |  |  |
Income from equity method investment | 28,950 |  |  | 15,592 |  |  |  |  |
Other noninterest income | 25,683 |  |  | 20,058 |  |  |  |  |
Total noninterest income | 92,709 |  |  | 70,377 |  |  |  |  |
Noninterest expense: |  |  |  |  |  |  |
Salaries and employee benefits | 102,728 |  |  | 80,480 |  |  |  |  |
Equipment and occupancy | 23,220 |  |  | 20,978 |  |  |  |  |
Other real estate (income) expense, net | (13) |  |  | 2,415 |  |  |  |  |
Marketing and other business development | 2,349 |  |  | 3,251 |  |  |  |  |
Postage and supplies | 1,806 |  |  | 1,990 |  |  |  |  |
Amortization of intangibles | 2,206 |  |  | 2,520 |  |  |  |  |
Other noninterest expense | 22,400 |  |  | 25,715 |  |  |  |  |
Total noninterest expense | 154,696 |  |  | 137,349 |  |  |  |  |
Income before income taxes | 153,648 |  |  | 26,691 |  |  |  |  |
Income tax expense (benefit) | 28,220 |  |  | (1,665) |  |  |  |  |
Net income | 125,428 |  |  | 28,356 |  |  |  |  |
Preferred stock dividends | (3,798) |  |  | — |  |  |  |  |
Net income available to common shareholders | $ | 121,630 |  |  | $ | 28,356 |  |  |  |  |
Per share information: |  |  |  |  |  |  |
Basic net income per common share | $ | 1.61 |  |  | $ | 0.37 |  |  |  |  |
Diluted net income per common share | $ | 1.61 |  |  | $ | 0.37 |  |  |  |  |
Weighted average common shares outstanding: |  |  |  |  |  |  |
Basic | 75,372,883 |  |  | 75,803,402 |  |  |  |  |
Diluted | 75,657,149 |  |  | 75,966,295 |  |  |  |  |

See accompanying notes to consolidated financial statements (unaudited).
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PINNACLE FINANCIAL PARTNERS, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Unaudited)
(dollars in thousands)

| Three months ended March 31, |  |
| 2021 |  | 2020 |  |  |  |
Net income | $ | 125,428 |  |  | $ | 28,356 |  |  |  |  |
Other comprehensive income (loss), net of tax: |  |  |  |  |  |  |
Change in fair value on available-for-sale securities, net of tax | (33,372) |  |  | 32,872 |  |  |  |  |
Change in fair value of cash flow hedges, net of tax | (17,742) |  |  | 61,084 |  |  |  |  |
Accretion of net unrealized gains on securities transferred from available-for-sale to held-to-maturity, net of tax | (1,691) |  |  | (467) |  |  |  |  |
Loss on cash flow hedges reclassified from other comprehensive income into net income, net of tax | 504 |  |  | 1,825 |  |  |  |  |
Net gain on sale of investment securities reclassified from other comprehensive income into net income, net of tax | — |  |  | (342) |  |  |  |  |
Total other comprehensive income (loss), net of tax | (52,301) |  |  | 94,972 |  |  |  |  |
Total comprehensive income | $ | 73,127 |  |  | $ | 123,328 |  |  |  |  |

See accompanying notes to consolidated financial statements (unaudited).
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PINNACLE FINANCIAL PARTNERS, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY
(Unaudited)

(dollars and shares in thousands) |  | Common Stock |  |  |  |
| Preferred Stock Amount | Shares | Amounts | Additional Paid-in Capital | Retained Earnings | Accumulated Other Comp. Income (Loss), net | Total Shareholders' Equity
Balance at December 31, 2019 | $ | — |  | 76,564 |  | $ | 76,564 |  | $ | 3,064,467 |  | $ | 1,184,183 |  | $ | 30,534 |  | $ | 4,355,748 |
Exercise of employee common stock options & related tax benefits | — |  | 1 |  | 1 |  | 4 |  | — |  | — |  | 5 |
Common stock dividends paid ($0.16 per share) | — |  | — |  | — |  | — |  | (12,442) |  | — |  | (12,442) |
Repurchase of common stock | — |  | (1,015) |  | (1,015) |  | (49,775) |  | — |  | — |  | (50,790) |
Issuance of restricted common shares, net of forfeitures | — |  | 198 |  | 198 |  | (198) |  | — |  | — |  | — |
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes & related tax benefits | — |  | 84 |  | 84 |  | (2,552) |  | — |  | — |  | (2,468) |
Restricted shares withheld for taxes & related tax benefit | — |  | (32) |  | (32) |  | (1,926) |  | — |  | — |  | (1,958) |
Compensation expense for restricted shares & performance stock units | — |  | — |  | — |  | 5,501 |  | — |  | — |  | 5,501 |
Net income | — |  | — |  | — |  | — |  | 28,356 |  | — |  | 28,356 |
Cumulative effect of change in accounting principle | — |  | — |  | — |  | — |  | (31,796) |  | — |  | (31,796) |
Other comprehensive income | — |  | — |  | — |  | — |  | — |  | 94,972 |  | 94,972 |
Balance at March 31, 2020 | $ | — |  | 75,800 |  | $ | 75,800 |  | $ | 3,015,521 |  | $ | 1,168,301 |  | $ | 125,506 |  | $ | 4,385,128 |

Balance at December 31, 2020 | $ | 217,126 |  | 75,850 |  | $ | 75,850 |  | $ | 3,028,063 |  | $ | 1,407,723 |  | $ | 175,849 |  | $ | 4,904,611 |
Exercise of employee common stock options & related tax benefits | — |  | 13 |  | 13 |  | 291 |  | — |  | — |  | 304 |
Preferred dividends paid ($16.88 per share) | — |  | — |  | — |  | — |  | (3,798) |  | — |  | (3,798) |
Common dividends paid ($0.18 per share) | — |  | — |  | — |  | — |  | (13,902) |  | — |  | (13,902) |
Issuance of restricted common shares, net of forfeitures | — |  | 172 |  | 172 |  | (172) |  | — |  | — |  | — |
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes & related tax benefits | — |  | 87 |  | 87 |  | (3,848) |  |  | — |  | (3,761) |
Restricted shares withheld for taxes & related tax benefits | — |  | (34) |  | (34) |  | (2,422) |  | — |  | — |  | (2,456) |
Compensation expense for restricted shares & performance stock units | — |  | — |  | — |  | 5,399 |  | — |  | — |  | 5,399 |
Net income | — |  | — |  | — |  | — |  | 125,428 |  | — |  | 125,428 |
Other comprehensive loss | — |  | — |  | — |  | — |  | — |  | (52,301) |  | (52,301) |
Balance at March 31, 2021 | $ | 217,126 |  | 76,088 |  | $ | 76,088 |  | $ | 3,027,311 |  | $ | 1,515,451 |  | $ | 123,548 |  | $ | 4,959,524 |

See accompanying notes to consolidated financial statements (unaudited).
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PINNACLE FINANCIAL PARTNERS, INC. AND SUBSIDIARIES
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)

(dollars in thousands) | Three months ended March 31,
| 2021 |  | 2020
Operating activities: |  |  |
Net income | $ | 125,428 |  |  | $ | 28,356 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Net amortization/accretion of premium/discount on securities | 12,195 |  |  | 6,799 |
Depreciation, amortization and accretion | 14,049 |  |  | 10,219 |
Provision for credit losses | 7,235 |  |  | 99,889 |
Gain on mortgage loans sold, net | (13,666) |  |  | (8,583) |
Investment gains on sales, net | — |  |  | (463) |
Stock-based compensation expense | 5,399 |  |  | 5,501 |
Deferred tax expense (benefit) | 7,537 |  |  | (11,799) |
Losses (gains) on dispositions of other real estate and other investments | (132) |  |  | 2,309 |
Income from equity method investment | (28,950) |  |  | (15,592) |
Dividends received from equity method investment | 9,993 |  |  | 7,957 |
Excess tax benefit from stock compensation | (1,565) |  |  | (862) |
Gain on commercial loans sold, net | (1,184) |  |  | (597) |
Commercial loans held for sale originated | (115,154) |  |  | (78,671) |
Commercial loans held for sale sold | 134,997 |  |  | 90,003 |
Consumer loans held for sale originated | (640,024) |  |  | (366,423) |
Consumer loans held for sale sold | 655,743 |  |  | 369,581 |
Decrease (increase) in other assets | 70,174 |  |  | (113,848) |
Increase (decrease) in other liabilities | (118,902) |  |  | 32,834 |
Net cash provided by operating activities | 123,173 |  |  | 56,610 |
Investing activities: |  |  |
Activities in securities available-for-sale: |  |  |
Purchases | (302,867) |  |  | (407,122) |
Sales | — |  |  | 30,204 |
Maturities, prepayments and calls | 126,841 |  |  | 88,164 |
Activities in securities held-to-maturity: |  |  |
Maturities, prepayments and calls | 9,653 |  |  | 1,743 |
Increase in securities purchased under agreements to resell | (450,000) |  |  | — |
Increase in loans, net | (672,239) |  |  | (611,836) |
Purchases of software, premises and equipment | (5,704) |  |  | (6,334) |
Proceeds from sale of other real estate | 1,980 |  |  | 1,796 |
Proceeds from derivative instruments | — |  |  | 35,680 |
Proceeds from sale of FHLB stock | 7,883 |  |  | — |
Increase in other investments | (20,456) |  |  | (10,893) |
Net cash used in investing activities | (1,304,909) |  |  | (878,598) |
Financing activities: |  |  |
Net increase in deposits | 587,418 |  |  | 1,152,246 |
Net increase in securities sold under agreements to repurchase | 43,954 |  |  | 60,194 |
Federal Home Loan Bank: Advances | — |  |  | 650,000 |
Federal Home Loan Bank: Repayments/maturities | (200,000) |  |  | (395,014) |
Advances of other borrowings, net of issuance costs | — |  |  | (65) |
Repayments of other borrowings | — |  |  | (80,000) |
Principal payments of finance lease obligation | (64) |  |  | (59) |
Issuance of common stock pursuant to restricted stock unit agreement, net of shares withheld for taxes | (3,761) |  |  | (2,468) |
Exercise of common stock options, net of shares surrendered for taxes | (2,152) |  |  | (1,953) |
Repurchase of common stock | — |  |  | (50,790) |
Common stock dividends paid | (13,902) |  |  | (12,442) |
Preferred stock dividends paid | (3,798) |  |  | — |
Net cash provided by financing activities | 407,695 |  |  | 1,319,649 |
Net increase (decrease) in cash, cash equivalents, and restricted cash | (774,041) |  |  | 497,661 |
Cash, cash equivalents, and restricted cash, beginning of period | 3,961,449 |  |  | 526,707 |
Cash, cash equivalents, and restricted cash, end of period | $ | 3,187,408 |  |  | $ | 1,024,368 |

See accompanying notes to consolidated financial statements (unaudited).
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PINNACLE FINANCIAL PARTNERS, INC. AND SUBSIDIARIES
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)
Note 1. Summary of Significant Accounting Policies
Nature of Business — Pinnacle Financial Partners, Inc. (Pinnacle Financial) is a financial holding company whose primary business is conducted by its wholly-owned subsidiary, Pinnacle Bank. Pinnacle Bank is a commercial bank headquartered in Nashville, Tennessee. Pinnacle Financial completed its acquisitions of CapitalMark Bank & Trust (CapitalMark), Magna Bank (Magna), Avenue Financial Holdings, Inc. (Avenue), BNC Bancorp (BNC) and Advocate Capital, Inc. (Advocate Capital) on July 31, 2015, September 1, 2015, July 1, 2016, June 16, 2017 and July 2, 2019, respectively. Pinnacle Financial and Pinnacle Bank also collectively hold a 49% interest in Bankers Healthcare Group, LLC (BHG), a company that primarily serves as a full-service commercial loan provider to healthcare and other professional practices. Pinnacle Bank provides a full range of banking services, including investment, mortgage, insurance, and comprehensive wealth management services, in its 12 primarily urban markets within Tennessee, the Carolinas, Virginia and Georgia.
Basis of Presentation — The accompanying unaudited consolidated financial statements have been prepared in accordance with instructions to Form 10-Q and therefore do not include all information and footnotes necessary for a fair presentation of financial position, results of operations, and cash flows in conformity with U.S. generally accepted accounting principles (U.S. GAAP). All adjustments consisting of normally recurring accruals that, in the opinion of management, are necessary for a fair presentation of the financial position and results of operations for the periods covered by the report have been included. The accompanying unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes appearing in Pinnacle Financial's Annual Report on Form 10-K for the year ended December 31, 2020 (2020 10-K).
These consolidated financial statements include the accounts of Pinnacle Financial and its wholly-owned subsidiaries. Certain statutory trust affiliates of Pinnacle Financial, as noted in Note 11. Other Borrowings are included in these consolidated financial statements pursuant to the equity method of accounting. Significant intercompany transactions and accounts are eliminated in consolidation.
Use of Estimates — The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Material estimates that are particularly susceptible to significant change in the near term include the determination of the allowance for credit losses and determination of any impairment of goodwill or intangible assets. It is reasonably possible Pinnacle Financial's estimate of the allowance for credit losses and determination of impairment of goodwill or intangible assets could change as a result of the continued impact of the COVID-19 pandemic on the economy. The resulting change in these estimates could be material to Pinnacle Financial's consolidated financial statements. There have been no significant changes to Pinnacle Financial's significant accounting policies as disclosed in the 2020 10-K.
Cash Flow Information — Supplemental cash flow information addressing certain cash and noncash transactions for the three months ended March 31, 2021 and 2020 was as follows (in thousands):

| For the three months ended March 31,
| 2021 |  | 2020
Cash Transactions: |  |  |
Interest paid | $ | 38,362 |  |  | $ | 77,748 |
Income taxes paid, net | 433 |  |  | 620 |
Operating lease payments | 3,516 |  |  | 3,424
Noncash Transactions: |  |  |
Loans charged-off to the allowance for credit losses | 14,274 |  |  | 11,693 |
Loans foreclosed upon and transferred to other real estate owned | 139 |  |  | 1,800 |
Available-for-sale securities transferred to held-to-maturity portfolio | — |  |  | 873,613 |
Right-of-use asset recognized during the period in exchange for lease obligations | 531 |  |  | 716 |

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Income Per Common Share — Basic net income per common share (EPS) is computed by dividing net income available to common shareholders by the weighted average common shares outstanding for the period. Diluted EPS reflects the dilution that could occur if securities or other contracts to issue common stock were exercised or converted. The difference between basic and diluted weighted average common shares outstanding is attributable to common stock options, restricted share awards, and restricted share unit awards. The dilutive effect of outstanding options, restricted share awards, and restricted share unit awards is reflected in diluted EPS by application of the treasury stock method.
The following is a summary of the basic and diluted net income per common share calculations for the three months ended March 31, 2021 and 2020 (in thousands, except per share data):

| Three months ended March 31, |  |
| 2021 | 2020 |  |  |
Basic net income per common share calculation: |  |  |  |  |
Numerator - Net income available to common shareholders | $ | 121,630 |  | $ | 28,356 |  |  |  |
Denominator - Weighted average common shares outstanding | 75,373 |  | 75,803 |  |  |  |
Basic net income per common share | $ | 1.61 |  | $ | 0.37 |  |  |  |
Diluted net income per common share calculation: |  |  |  |  |
Numerator – Net income available to common shareholders | $ | 121,630 |  | $ | 28,356 |  |  |  |
Denominator - Weighted average common shares outstanding | 75,373 |  | 75,803 |  |  |  |
Dilutive common shares contingently issuable | 284 |  | 163 |  |  |  |
Weighted average diluted common shares outstanding | 75,657 |  | 75,966 |  |  |  |
Diluted net income per common share | $ | 1.61 |  | $ | 0.37 |  |  |  |

Recently Adopted Accounting Pronouncements — In January 2020, the FASB issued Accounting Standards Update 2020-01, Investments-Equity Securities (Topic 321), Investments-Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) - Clarifying the Interactions between Topic 321, Topic 323, and Topic 815. These amendments, among other things, clarify that a company should consider observable transactions that require a company to either apply or discontinue the equity method of accounting under Topic 323, Investments-Equity Method and Joint Ventures, for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. The amendments also clarify that when determining the accounting for certain forward contracts and purchased options a company should not consider, whether upon settlement or exercise, if the underlying securities would be accounted for under the equity method or fair value option. The guidance is effective for public business entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. An entity should apply ASU 2020-01 prospectively at the beginning of the interim period that includes the adoption date. The amendments became effective for Pinnacle Financial on January 1, 2021 and had no impact on Pinnacle Financial's consolidated financial statements.
In December 2019, the FASB issued Accounting Standards Update No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes to simplify various aspects of the current guidance to promote consistent application of the standard among reporting entities by moving certain exceptions to the general principles. The amendments are effective for fiscal years beginning after December 15, 2020. The amendments became effective for Pinnacle Financial on January 1, 2021 and had no impact on Pinnacle Financial's consolidated financial statements.
In March 2020, the FASB issued Accounting Standards Update 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting, and has issued subsequent amendments thereto, which provides temporary optional guidance to ease the potential burden in accounting for reference rate reform. The ASU provides optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another reference rate expected to be discontinued. It is intended to help stakeholders during the global market-wide reference rate transition period. The guidance is effective for all entities as of March 12, 2020 through December 31, 2022. Pinnacle Financial is implementing a transition plan to identify and modify its loans and other financial instruments, including certain indebtedness, with attributes that are either directly or indirectly influenced by LIBOR. Pinnacle Financial is assessing ASU 2020-04 and its impact on the transition away from LIBOR for its loans and other financial instruments.
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Newly Issued Not Yet Effective Accounting Standards — Other than those pronouncements discussed above which have been recently adopted, Pinnacle Financial does not believe there were any other recently issued accounting pronouncements that are expected to materially impact its consolidated financial statements.
Subsequent Events — ASC Topic 855, Subsequent Events, establishes general standards of accounting for and disclosure of events that occur after the balance sheet date but before financial statements are issued. Pinnacle Financial evaluated all events or transactions that occurred after March 31, 2021 through the date of the issued financial statements.
Note 2. Equity method investment
A summary of BHG's financial position as of March 31, 2021 and December 31, 2020 and results of operations as of and for the three months ended March 31, 2021 and 2020, were as follows (in thousands):

| As of
| March 31, 2021 |  | December 31, 2020
Assets | $ | 1,608,912 |  |  | $ | 1,330,317 |
Liabilities | 1,334,066 |  |  | 1,088,135 |
Equity interests | 274,846 |  |  | 242,182 |
Total liabilities and equity | $ | 1,608,912 |  |  | $ | 1,330,317 |

| For the three months ended March 31, |  |
| 2021 |  | 2020 |  |  |  |
Revenues | $ | 157,623 |  |  | $ | 97,943 |  |  |  |  |
Net income | $ | 58,562 |  |  | $ | 32,471 |  |  |  |  |

At March 31, 2021, technology, trade name and customer relationship intangibles, net of related amortization, totaled $7.4 million compared to $7.6 million as of December 31, 2020. Amortization expense of $188,000 was included for the three months ended March 31, 2021 compared to $293,000 for the same period in the prior year. Accretion income of $452,000 was included in the three months ended March 31, 2021 compared to $564,000 for the same period in the prior year.
During the three months ended March 31, 2021, Pinnacle Financial and Pinnacle Bank received dividends of $10.0 million from BHG in the aggregate compared to $8.0 million for the same period in the prior year. Earnings from BHG are included in Pinnacle Financial's consolidated tax return. Profits from intercompany transactions are eliminated. During the three months ended March 31, 2021, Pinnacle Bank purchased $74.6 million of loans from BHG at par pursuant to BHG's joint venture loan program whereby BHG and Pinnacle share proportionately in the credit risk of the acquired loans based on the rate on the loan and the rate of the purchase. The yield on this portfolio to Pinnacle Bank is anticipated to be 4.75% per annum. No loans were purchased from BHG by Pinnacle Bank for the three months ended March 31, 2020.
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Note 3. Securities
The amortized cost and fair value of securities available-for-sale and held-to-maturity at March 31, 2021 and December 31, 2020 are summarized as follows (in thousands):

| Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Fair Value
March 31, 2021: |  |  |  |  |  |  |
Securities available-for-sale: |  |  |  |  |  |  |
U.S. Treasury securities | $ | 83,971 |  |  | $ | 22 |  |  | $ | — |  |  | $ | 83,993 |
U.S. government agency securities | 159,613 |  |  | 1,224 |  |  | 3,381 |  |  | 157,456 |
Mortgage-backed securities | 1,583,670 |  |  | 40,921 |  |  | 14,813 |  |  | 1,609,778 |
State and municipal securities | 1,480,691 |  |  | 40,140 |  |  | 8,471 |  |  | 1,512,360 |
Asset-backed securities | 191,005 |  |  | 382 |  |  | 692 |  |  | 190,695 |
Corporate notes and other | 121,766 |  |  | 2,824 |  |  | 1,853 |  |  | 122,737 |
| $ | 3,620,716 |  |  | $ | 85,513 |  |  | $ | 29,210 |  |  | $ | 3,677,019 |
Securities held-to-maturity: |  |  |  |  |  |  |
State and municipal securities | $ | 1,014,543 |  |  | $ | 22,320 |  |  | $ | 3,114 |  |  | $ | 1,033,749 |
| $ | 1,014,543 |  |  | $ | 22,320 |  |  | $ | 3,114 |  |  | $ | 1,033,749 |
Allowance for credit losses - securities held-to-maturity | (198) |  |  |  |  |  |  |
Securities held-to-maturity, net of allowance for credit losses | $ | 1,014,345 |  |  |  |  |  |  |

December 31, 2020: |  |  |  |  |  |  |
Securities available-for-sale: |  |  |  |  |  |  |
U.S. Treasury securities | $ | 82,199 |  |  | $ | 10 |  |  | $ | — |  |  | $ | 82,209 |
U.S. government agency securities | 74,916 |  |  | 1,547 |  |  | 60 |  |  | 76,403 |
Mortgage-backed securities | 1,623,759 |  |  | 67,759 |  |  | 2,327 |  |  | 1,689,191 |
State and municipal securities | 1,411,288 |  |  | 44,559 |  |  | 12,484 |  |  | 1,443,363 |
Asset-backed securities | 177,878 |  |  | 715 |  |  | 657 |  |  | 177,936 |
Corporate notes and other | 117,256 |  |  | 2,632 |  |  | 2,309 |  |  | 117,579 |
| $ | 3,487,296 |  |  | $ | 117,222 |  |  | 17,837 |  |  | $ | 3,586,681 |
Securities held-to-maturity: |  |  |  |  |  |  |
State and municipal securities | $ | 1,028,550 |  |  | $ | 38,272 |  |  | $ | 291 |  |  | $ | 1,066,531 |
| $ | 1,028,550 |  |  | $ | 38,272 |  |  | $ | 291 |  |  | $ | 1,066,531 |
Allowance for credit losses - securities held-to-maturity | (191) |  |  |  |  |  |  |
Securities held-to-maturity, net of allowance for credit losses | $ | 1,028,359 |  |  |  |  |  |  |

During the quarters ended March 31, 2020 and September 30, 2018, Pinnacle Financial transferred, at fair value, $873.6 million and $179.8 million, respectively, of municipal securities from the available-for-sale portfolio to the held-to-maturity portfolio. The related net unrealized after tax gains of $69.0 million and net unrealized after tax losses of $2.2 million, respectively, remained in accumulated other comprehensive income (loss) and will be amortized over the remaining life of the securities, offsetting the related amortization of discount or premium on the transferred securities. No gains or losses were recognized at the time of the transfer. At March 31, 2021, approximately $609.8 million of securities within Pinnacle Financial's investment portfolio were pledged to secure either public funds and other deposits or securities sold under agreements to repurchase. At March 31, 2021, repurchase agreements comprised of secured borrowings totaled $172.1 million and were secured by $172.1 million of pledged U.S. government agency securities, municipal securities, asset-backed securities, and corporate debentures. As the fair value of securities pledged to secure repurchase agreements may decline, Pinnacle Financial regularly evaluates its need to pledge additional securities to remain adequately secured.
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The amortized cost and fair value of debt securities as of March 31, 2021 by contractual maturity are shown below. Actual maturities may differ from contractual maturities of mortgage- and asset-backed securities since the mortgages and assets underlying the securities may be called or prepaid with or without penalty. Therefore, these securities are not included in the maturity categories in the following summary (in thousands):

| Available-for-sale |  | Held-to-maturity
March 31, 2021: | Amortized Cost |  | Fair Value |  | Amortized Cost |  | Fair Value
Due in one year or less | $ | 88,478 |  |  | $ | 88,502 |  |  | $ | — |  |  | $ | — |
Due in one year to five years | 13,022 |  |  | 13,266 |  |  | 1,409 |  |  | 1,476 |
Due in five years to ten years | 265,259 |  |  | 278,713 |  |  | 7,152 |  |  | 7,223 |
Due after ten years | 1,479,282 |  |  | 1,496,065 |  |  | 1,005,982 |  |  | 1,025,050 |
Mortgage-backed securities | 1,583,670 |  |  | 1,609,778 |  |  | — |  |  | — |
Asset-backed securities | 191,005 |  |  | 190,695 |  |  | — |  |  | — |
| $ | 3,620,716 |  |  | $ | 3,677,019 |  |  | $ | 1,014,543 |  |  | $ | 1,033,749 |

At March 31, 2021 and December 31, 2020, the following investments had unrealized losses. The table below classifies these investments according to the term of the unrealized losses of less than twelve months or twelve months or longer (in thousands):

| Investments with an Unrealized Loss of less than 12 months |  | Investments with an Unrealized Loss of 12 months or longer |  | Total Investments with an Unrealized Loss
| Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses |  | Fair Value |  | Unrealized Losses
At March 31, 2021 |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
U.S. government agency securities | 109,710 |  |  | 3,355 |  |  | 5,701 |  |  | 26 |  |  | 115,411 |  |  | 3,381 |
Mortgage-backed securities | 427,992 |  |  | 14,434 |  |  | 30,072 |  |  | 379 |  |  | 458,064 |  |  | 14,813 |
State and municipal securities | 287,208 |  |  | 4,779 |  |  | 253,998 |  |  | 4,379 |  |  | 541,206 |  |  | 9,158 |
Asset-backed securities | 62,619 |  |  | 662 |  |  | 13,228 |  |  | 30 |  |  | 75,847 |  |  | 692 |
Corporate notes | 13,995 |  |  | 5 |  |  | 25,450 |  |  | 1,848 |  |  | 39,445 |  |  | 1,853 |
Total temporarily-impaired securities | $ | 901,524 |  |  | $ | 23,235 |  |  | $ | 328,449 |  |  | $ | 6,662 |  |  | $ | 1,229,973 |  |  | $ | 29,897 |
At December 31, 2020 |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
U.S. government agency securities | 9,962 |  |  | 38 |  |  | 6,091 |  |  | 22 |  |  | 16,053 |  |  | 60 |
Mortgage-backed securities | 165,696 |  |  | 1,772 |  |  | 35,997 |  |  | 555 |  |  | 201,693 |  |  | 2,327 |
State and municipal securities | 175,115 |  |  | 2,220 |  |  | 345,435 |  |  | 10,264 |  |  | 520,550 |  |  | 12,484 |
Asset-backed securities | 46,399 |  |  | 207 |  |  | 52,840 |  |  | 450 |  |  | 99,239 |  |  | 657 |
Corporate notes | 9,978 |  |  | 40 |  |  | 23,920 |  |  | 2,269 |  |  | 33,898 |  |  | 2,309 |
Total temporarily-impaired securities | $ | 407,150 |  |  | $ | 4,277 |  |  | $ | 464,283 |  |  | $ | 13,560 |  |  | $ | 871,433 |  |  | $ | 17,837 |

The applicable dates for determining when securities were in an unrealized loss position were March 31, 2021 and December 31, 2020. As such, it is possible that a security had a market value less than its amortized cost on other days during the past twelve-month pe riods ended March 31, 2021 and December 31, 2020, but is not in the "Investments with an Unrealized Loss of less t han 12 months" category above.
As shown in the tables above, including both available-for-sale and held-to-maturity investment securities, at March 31, 2021, Pinnacle Financial had approximately $29.9 million in unrealized losses on $1.2 billion of securities. The unrealized losses associated with $873.6 million and $179.8 million of municipal securities transferred from the available-for-sale portfolio to the held-to-maturity portfolio during the quarters ended March 31, 2020 and September 30, 2018, respectively, represent unrealized losses since the date of purchase, independent of the impact associated with changes in the cost basis upon transfer between portfolios. For any securities classified as available-for-sale that are in an unrealized loss position at the balance sheet date, Pinnacle Financial assesses whether or not it intends to sell the security, or more likely than not will be required to sell the security, before recovery of its amortized cost basis which would require a write-down to fair value through net income. Because Pinnacle Financial currently does not intend to sell those securities that have an unrealized loss at March 31, 2021, and it is not more-likely-than-not that Pinnacle Financial will be required to
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sell the securities before recovery of their amortized cost bases, which may be maturity, Pinnacle Financial has determined that no write-down is necessary. In addition, Pinnacle Financial evaluates whether any portion of the decline in fair value is the result of credit deterioration, which would require the recognition of an allowance for credit losses. Such evaluations consider the extent to which the amortized cost of the security exceeds its fair value, changes in credit ratings and any other known adverse conditions related to the specific security. The unrealized losses associated with securities at March 31, 2021 are driven by changes in interest rates and are not due to the credit quality of the securities, and accordingly, no allowance for credit losses is considered necessary related to available-for-sale securities at March 31, 2021. These securities will continue to be monitored as a part of Pinnacle Financial's ongoing evaluation of credit quality. Management evaluates the financial performance of the issuers on a quarterly basis to determine if it is probable that the issuers can make all contractual principal and interest payments.
The allowance for credit losses on held-to-maturity securities is measured on a collective basis by major security type. At March 31, 2021, Pinnacle Financial's held-to-maturity securities consist entirely of municipal securities. The estimates of expected credit losses are based on historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. A reasonable and supportable period of 18 months and reversion period of 12 months was utilized to estimate credit losses on held-to-maturity municipal securities at each of March 31, 2021 and 2020. At March 31, 2021 and December 31, 2020, the estimated allowance for credit losses on these securities was $198,000 and $191,000, respectively, with the change driven largely by changes in macroeconomic projections.
Pinnacle Financial utilizes bond credit ratings assigned by third party ratings agencies to monitor the credit quality of debt securities held-to-maturity. At March 31, 2021, all debt securities classified as held-to-maturity were rated A or higher by the ratings agencies. Updated credit ratings are obtained as they become available from the ratings agencies.
Periodically, available-for-sale securities may be sold or the composition of the portfolio realigned to improve yields, quality or marketability, or to implement changes in investment or asset/liability strategy, including maintaining collateral requirements and raising funds for liquidity purposes or preparing for anticipated changes in market interest rates. Additionally, if an available-for-sale security loses its investment grade or tax-exempt status, the underlying credit support is terminated or collection otherwise becomes uncertain based on factors known to management, Pinnacle Financial will consider selling the security, but will review each security on a case-by-case basis as these factors become known. During the three months ended March 31, 2021, no available-for-sale securities were sold and no amounts related to gains or losses on sales of available-for-sale securities were reclassified from accumulated other comprehensive income into net income.
Pinnacle Financial has entered into various fair value hedging transactions to mitigate the impact of changing interest rates on the fair values of available for sale securities. See Note 8. Derivative Instruments for disclosure of the gains and losses recognized on derivative instruments and the cumulative fair value hedging adjustments to the carrying amount of the hedged securities.
Note 4. Loans and Allowance for Credit Losses
For financial reporting purposes, Pinnacle Financial classifies its loan portfolio based on the underlying collateral utilized to secure each loan. This classification is consistent with those utilized in the Quarterly Report of Condition and Income filed by Pinnacle Bank with the Federal Deposit Insurance Corporation (FDIC).
Pinnacle Financial uses the following loan categories for presentation of loan balances and the related allowance for credit losses on loans:
•Owner occupied commercial real estate mortgage loans - Owner occupied commercial real estate mortgage loans are secured by commercial office buildings, industrial buildings, warehouses or retail buildings where the owner of the building occupies the property. For such loans, repayment is largely dependent upon the operation of the borrower's business.
•Non-owner occupied commercial real estate loans - These loans represent investment real estate loans secured by office buildings, industrial buildings, warehouses, retail buildings, and multifamily residential housing. Repayment is primarily dependent on lease income generated from the underlying collateral.
•Consumer real estate mortgage loans - Consumer real estate mortgage consists primarily of loans secured by 1-4 family residential properties, including home equity lines of credit. Repayment is primarily dependent on the personal cash flow of the borrower.
•Construction and land development loans - Construction and land development loans include loans where the repayment is dependent on the successful completion and eventual sale, refinance or operation of the related real estate project. Construction and land development loans include 1-4 family construction projects and commercial construction endeavors such as warehouses, apartments, office and retail space and land acquisition and development.
•Commercial and industrial loans - Commercial and industrial loans include loans to business enterprises issued for commercial, industrial and/or other professional purposes. These loans are generally secured by equipment, inventory, and
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accounts receivable of the borrower and repayment is primarily dependent on business cash flows. Loans totaling $2.2 billion and $1.8 billion granted under the Paycheck Protection Program are included in this category as of March 31, 2021, and December 31, 2020, respectively.
•Consumer and other loans - Consumer and other loans include all loans issued to individuals not included in the consumer real estate mortgage classification. Examples of consumer and other loans are automobile loans, consumer credit cards and loans to finance education, among others. Many consumer loans are unsecured. Repayment is primarily dependent on the personal cash flow of the borrower.
Loans at March 31, 2021 and December 31, 2020 were as follows:

|  | March 31, 2021 |  | December 31, 2020
Commercial real estate: |  |  |  |
Owner occupied |  | $ | 2,869,785 |  |  | $ | 2,802,227 |
Non-owner occupied |  | 5,573,181 |  |  | 5,203,384 |
Consumer real estate – mortgage |  | 3,086,916 |  |  | 3,099,172 |
Construction and land development |  | 2,568,969 |  |  | 2,901,746 |
Commercial and industrial |  | 8,576,528 |  |  | 8,038,457 |
Consumer and other |  | 411,322 |  |  | 379,515 |
Subtotal |  | $ | 23,086,701 |  |  | $ | 22,424,501 |
Allowance for credit losses |  | (280,881) |  |  | (285,050) |
Loans, net |  | $ | 22,805,820 |  |  | $ | 22,139,451 |

Commercial loans receive risk ratings assigned by a financial advisor subject to validation by Pinnacle Financial's independent loan review department. Risk ratings are categorized as pass, special mention, substandard, substandard-nonaccrual or doubtful-nonaccrual. Pass rated loans include multiple ratings categories representing varying degrees of risk attributes lesser than those of the other defined risk categories further described below. Pinnacle Financial believes its categories follow those used by Pinnacle Bank's primary regulators. At March 31, 2021, approximately 78.2% of Pinnacle Financial's loan portfolio was analyzed as a commercial loan type with a specifically assigned risk rating. Consumer loans and small business loans are generally not assigned an individual risk rating but are evaluated as either accrual or nonaccrual based on the performance of the individual loans. However, certain consumer real estate-mortgage loans and certain consumer and other loans receive a specific risk rating due to the loan proceeds being used for commercial purposes even though the collateral may be of a consumer loan nature. Consumer loans that have been placed on nonaccrual but have not otherwise been assigned a risk rating are believed by management to share risk characteristics with loans rated substandard-nonaccrual and have been presented as such in Pinnacle Financial's risk rating disclosures.
Risk ratings are subject to continual review by a financial advisor and a senior credit officer. At least annually, Pinnacle Financial's credit procedures require every risk rated loan of $1.0 million or more be subject to a formal credit risk review process. Each loan's risk rating is also subject to review by Pinnacle Financial's independent loan review department, which reviews a substantial portion of Pinnacle Financial's risk rated portfolio annually. Included in the coverage are independent reviews of loans in targeted higher-risk portfolio segments such as certain commercial and industrial loans, land loans and/or loan types in certain geographies. Substantial credit risk review procedures have been performed to assess the impacts of the COVID-19 pandemic on the loan portfolio, and the results of these procedures are reflected in Pinnacle Financial's risk rating disclosures as of March 31, 2021.
Following are the definitions of the risk rating categories used by Pinnacle Financial. Pass rated loans include all credits other than those included within these categories:
•Special mention loans have potential weaknesses that deserve management's close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in Pinnacle Financial's credit position at some future date.
•Substandard loans are inadequately protected by the current net worth and financial capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness or weaknesses that jeopardize collection of the debt. Substandard loans are characterized by the distinct possibility that Pinnacle Financial could sustain some loss if the deficiencies are not corrected.
•Substandard-nonaccrual loans are substandard loans that have been placed on nonaccrual status.
•Doubtful-nonaccrual loans have all the characteristics of substandard-nonaccrual loans with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions and values, highly questionable and improbable.
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The table below presents loan balances classified within each risk rating category by primary loan type and based on year of origination as of March 31, 2021 (in thousands):

March 31, 2021 | 2021 | 2020 | 2019 | 2018 | 2017 | Prior | Revolving Loans | Total
Commercial real estate - Owner occupied |  |  |  |  |  |  |
Pass | $ | 185,030 |  | $ | 818,913 |  | $ | 454,195 |  | $ | 415,769 |  | $ | 287,792 |  | $ | 482,233 |  | $ | 75,410 |  | $ | 2,719,342 |
Special Mention | 843 |  | 21,745 |  | 23,153 |  | 18,193 |  | 9,943 |  | 7,773 |  | 100 |  | 81,750 |
Substandard (1) | — |  | 15,418 |  | 6,878 |  | 7,720 |  | 12,034 |  | 9,215 |  | 4,405 |  | 55,670 |
Substandard-nonaccrual | 469 |  | 4,175 |  | 143 |  | 2,882 |  | 825 |  | 4,529 |  | — |  | 13,023 |
Doubtful-nonaccrual | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total Commercial real estate - owner occupied | $ | 186,342 |  | $ | 860,251 |  | $ | 484,369 |  | $ | 444,564 |  | $ | 310,594 |  | $ | 503,750 |  | $ | 79,915 |  | $ | 2,869,785 |
Commercial real estate - Non-owner occupied |  |  |  |  |  |  |
Pass | $ | 363,560 |  | $ | 1,195,970 |  | $ | 1,148,016 |  | $ | 655,692 |  | $ | 460,511 |  | $ | 753,838 |  | $ | 76,477 |  | $ | 4,654,064 |
Special Mention | 4,790 |  | 499,220 |  | 128,032 |  | 49,715 |  | 104,627 |  | 101,186 |  | 35 |  | 887,605 |
Substandard (1) | 3,364 |  | 12,177 |  | 1,634 |  | 3,092 |  | 1,687 |  | 6,099 |  | — |  | 28,053 |
Substandard-nonaccrual | 91 |  | 3 |  | 416 |  | 573 |  | — |  | 2,376 |  | — |  | 3,459 |
Doubtful-nonaccrual | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total Commercial real estate - Non-owner occupied | $ | 371,805 |  | $ | 1,707,370 |  | $ | 1,278,098 |  | $ | 709,072 |  | $ | 566,825 |  | $ | 863,499 |  | $ | 76,512 |  | $ | 5,573,181 |
Consumer real estate – mortgage |  |  |  |  |  |  |  |
Pass | $ | 208,011 |  | $ | 703,564 |  | $ | 432,848 |  | $ | 278,303 |  | $ | 146,508 |  | $ | 374,293 |  | $ | 917,280 |  | $ | 3,060,807 |
Special Mention | 121 |  | — |  | — |  | 710 |  | 66 |  | 957 |  | — |  | 1,854 |
Substandard (1) | — |  | 661 |  | — |  | — |  | 183 |  | 1,872 |  | 1,760 |  | 4,476 |
Substandard-nonaccrual | 82 |  | 243 |  | 3,413 |  | 807 |  | 1,223 |  | 11,347 |  | 2,664 |  | 19,779 |
Doubtful-nonaccrual | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total Consumer real estate – mortgage | $ | 208,214 |  | $ | 704,468 |  | $ | 436,261 |  | $ | 279,820 |  | $ | 147,980 |  | $ | 388,469 |  | $ | 921,704 |  | $ | 3,086,916 |
Construction and land development |  |  |  |  |  |  |
Pass | $ | 230,571 |  | $ | 1,127,479 |  | $ | 817,068 |  | $ | 275,489 |  | $ | 32,141 |  | $ | 19,315 |  | $ | 11,414 |  | $ | 2,513,477 |
Special Mention | 1,501 |  | 38,796 |  | 8,638 |  | — |  | — |  | 4,243 |  | — |  | 53,178 |
Substandard (1) | — |  | 354 |  | 14 |  | 25 |  | — |  | 363 |  | — |  | 756 |
Substandard-nonaccrual | — |  | 363 |  | 524 |  | 68 |  | 74 |  | 529 |  | — |  | 1,558 |
Doubtful-nonaccrual | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total Construction and land development | $ | 232,072 |  | $ | 1,166,992 |  | $ | 826,244 |  | $ | 275,582 |  | $ | 32,215 |  | $ | 24,450 |  | $ | 11,414 |  | $ | 2,568,969 |
Commercial and industrial |  |  |  |  |  |  |
Pass | $ | 1,680,983 |  | $ | 2,677,307 |  | $ | 869,499 |  | $ | 485,136 |  | $ | 220,590 |  | $ | 174,287 |  | $ | 2,219,361 |  | $ | 8,327,163 |
Special Mention | 1,345 |  | 33,321 |  | 64,578 |  | 3,682 |  | 6,611 |  | 3,115 |  | 30,554 |  | 143,206 |
Substandard (1) | 2,099 |  | 22,656 |  | 15,010 |  | 11,797 |  | 2,462 |  | 2,345 |  | 15,502 |  | 71,871 |
Substandard-nonaccrual | 637 |  | 21,364 |  | 4,534 |  | 527 |  | 470 |  | 497 |  | 6,259 |  | 34,288 |
Doubtful-nonaccrual | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total Commercial and industrial | $ | 1,685,064 |  | $ | 2,754,648 |  | $ | 953,621 |  | $ | 501,142 |  | $ | 230,133 |  | $ | 180,244 |  | $ | 2,271,676 |  | $ | 8,576,528 |
Consumer and other |  |  |  |  |  |  |  |
Pass | $ | 93,203 |  | $ | 120,548 |  | $ | 13,895 |  | $ | 5,065 |  | $ | 5,453 |  | $ | 4,164 |  | $ | 168,966 |  | $ | 411,294 |
Special Mention | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Substandard (1) | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Substandard-nonaccrual | — |  | — |  | — |  | — |  | 25 |  | 3 |  | — |  | 28 |
Doubtful-nonaccrual | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total Consumer and other | $ | 93,203 |  | $ | 120,548 |  | $ | 13,895 |  | $ | 5,065 |  | $ | 5,478 |  | $ | 4,167 |  | $ | 168,966 |  | $ | 411,322 |
Total loans |  |  |  |  |  |  |  |
Pass | $ | 2,761,358 |  | $ | 6,643,781 |  | $ | 3,735,521 |  | $ | 2,115,454 |  | $ | 1,152,995 |  | $ | 1,808,130 |  | $ | 3,468,908 |  | $ | 21,686,147 |
Special Mention | 8,600 |  | 593,082 |  | 224,401 |  | 72,300 |  | 121,247 |  | 117,274 |  | 30,689 |  | 1,167,593 |
Substandard (1) | 5,463 |  | 51,266 |  | 23,536 |  | 22,634 |  | 16,366 |  | 19,894 |  | 21,667 |  | 160,826 |
Substandard-nonaccrual | 1,279 |  | 26,148 |  | 9,030 |  | 4,857 |  | 2,617 |  | 19,281 |  | 8,923 |  | 72,135 |
Doubtful-nonaccrual | — |  | — |  | — |  | — |  | — |  | — |  | — |  | — |
Total loans | $ | 2,776,700 |  | $ | 7,314,277 |  | $ | 3,992,488 |  | $ | 2,215,245 |  | $ | 1,293,225 |  | $ | 1,964,579 |  | $ | 3,530,187 |  | $ | 23,086,701 |

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(1) Potential problem loans represent those loans with a well-defined weakness and where information about possible credit problems of borrowers has caused management to have doubts about the borrower's ability to comply with present repayment terms. This definition is believed to be substantially consistent with the standards established by Pinnacle Bank's primary regulators for loans classified as substandard, excluding troubled debt restructurings. Potential problem loans, which are not included in nonaccrual loans, amounted to approximately $160.8 million at March 31, 2021, compared to $173.5 million at December 31, 2020.
The table below presents the aging of past due balances by loan segment at March 31, 2021 and December 31, 2020 (in thousands):

March 31, 2021 | 30-59 days past due |  | 60-89 days past due |  | 90 days or more past due |  | Total past due |  | Current |  | Total loans
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |
Owner-occupied | $ | 1,906 |  |  | $ | 69 |  |  | $ | 2,957 |  |  | $ | 4,932 |  |  | $ | 2,864,853 |  |  | $ | 2,869,785 |
Non-owner occupied | 1,714 |  |  | — |  |  | 2,526 |  |  | 4,240 |  |  | 5,568,941 |  |  | 5,573,181 |
Consumer real estate – mortgage | 5,303 |  |  | 790 |  |  | 5,816 |  |  | 11,909 |  |  | 3,075,007 |  |  | 3,086,916 |
Construction and land development | 137 |  |  | — |  |  | 383 |  |  | 520 |  |  | 2,568,449 |  |  | 2,568,969 |
Commercial and industrial | 10,913 |  |  | 2,895 |  |  | 4,377 |  |  | 18,185 |  |  | 8,558,343 |  |  | 8,576,528 |
Consumer and other | 797 |  |  | 223 |  |  | 342 |  |  | 1,362 |  |  | 409,960 |  |  | 411,322 |
Total | $ | 20,770 |  |  | $ | 3,977 |  |  | $ | 16,401 |  |  | $ | 41,148 |  |  | $ | 23,045,553 |  |  | $ | 23,086,701 |
December 31, 2020 |  |  |  |  |  |  |  |  |  |  |
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |
Owner-occupied | $ | 934 |  |  | $ | 2,672 |  |  | $ | 1,860 |  |  | $ | 5,466 |  |  | $ | 2,796,761 |  |  | $ | 2,802,227 |
Non-owner occupied | 726 |  |  | 6,220 |  |  | 3,861 |  |  | 10,807 |  |  | 5,192,577 |  |  | 5,203,384 |
Consumer real estate – mortgage | 8,859 |  |  | 328 |  |  | 6,274 |  |  | 15,461 |  |  | 3,083,711 |  |  | 3,099,172 |
Construction and land development | 278 |  |  | 418 |  |  | 736 |  |  | 1,432 |  |  | 2,900,314 |  |  | 2,901,746 |
Commercial and industrial | 20,278 |  |  | 5,801 |  |  | 4,408 |  |  | 30,487 |  |  | 8,007,970 |  |  | 8,038,457 |
Consumer and other | 806 |  |  | 282 |  |  | 304 |  |  | 1,392 |  |  | 378,123 |  |  | 379,515 |
Total | $ | 31,881 |  |  | $ | 15,721 |  |  | $ | 17,443 |  | $ | 21,260 |  | $ | 65,045 |  |  | $ | 22,359,456 |  |  | $ | 22,424,501 |

The following table details the changes in the allowance for credit losses for the three months ended March 31, 2021 and 2020, respectively, by loan classification (in thousands):

| Commercial real estate - Owner occupied | Commercial real estate - Non-owner occupied | Consumer real estate - mortgage | Construction and land development | Commercial and industrial | Consumer and other | Unallocated | Total
Three months ended March 31, 2021: |  |  |  |  |  |  |  |
Balance at December 31, 2020 | $ | 23,298 |  | $ | 79,132 |  | $ | 33,304 |  | $ | 42,408 |  | $ | 98,423 |  | $ | 8,485 |  | $ | — |  | $ | 285,050 |
Charged-off loans | (697) |  | (140) |  | (371) |  | (367) |  | (11,749) |  | (950) |  | — |  | (14,274) |
Recovery of previously charged-off loans | 602 |  | 12 |  | 365 |  | 37 |  | 1,206 |  | 655 |  | — |  | 2,877 |
Provision for credit losses on loans | (1,138) |  | 1,515 |  | (3,099) |  | (4,436) |  | 13,196 |  | 1,190 |  | — |  | 7,228 |
Balance at March 31, 2021 | $ | 22,065 |  | $ | 80,519 |  | $ | 30,199 |  | $ | 37,642 |  | $ | 101,076 |  | $ | 9,380 |  | $ | — |  | $ | 280,881 |
Three months ended March 31, 2020: |  |  |  |  |  |  |  |
Balance at December 31, 2019 | $ | 13,406 |  | $ | 19,963 |  | $ | 8,054 |  | $ | 12,662 |  | $ | 36,112 |  | $ | 3,595 |  | $ | 985 |  | $ | 94,777 |
Impact of adopting ASC 326 | 264 |  | (4,740) |  | 21,029 |  | (3,144) |  | 23,040 |  | 2,638 |  | (985) |  | 38,102 |
Charged-off loans | (1,561) |  | (261) |  | (930) |  | — |  | (7,734) |  | (1,207) |  | — |  | (11,693) |
Recovery of previously charged-off loans | 145 |  | 93 |  | 190 |  | 43 |  | 748 |  | 319 |  | — |  | 1,538 |
Provision for credit losses on loans | 11,380 |  | 17,059 |  | 4,655 |  | 29,350 |  | 35,894 |  | 1,403 |  | — |  | 99,741 |
Balance at March 31, 2020 | $ | 23,634 |  | $ | 32,114 |  | $ | 32,998 |  | $ | 38,911 |  | $ | 88,060 |  | $ | 6,748 |  | $ | — |  | $ | 222,465 |

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The adequacy of the allowance for credit losses is reviewed by Pinnacle Financial's management on a quarterly basis. This assessment includes procedures to estimate the allowance and test the adequacy and appropriateness of the resulting balance. The level of the allowance is based upon management's evaluation of historical default and loss experience, current and projected economic conditions, asset quality trends, known and inherent risks in the portfolio, adverse situations that may affect the borrowers' ability to repay the loan (including the timing of future payment), the estimated value of any underlying collateral, composition of the loan portfolio, industry and peer bank loan quality indications and other pertinent factors, including regulatory recommendations. The level of the allowance for credit losses maintained by management is believed adequate to absorb all expected future losses inherent in the loan portfolio at the balance sheet date. The allowance is increased by provisions charged to expense and decreased by charge-offs, net of recoveries of amounts previously charged-off.
Pinnacle Financial adopted ASU 2016-13 on January 1, 2020, which introduced the CECL methodology for estimating all expected losses over the life of a financial asset. Under the CECL methodology the allowance for credit losses is measured on a collective basis for pools of loans with similar risk characteristics, and for loans that do not share similar risk characteristics with the collectively evaluated pools, evaluations are performed on an individual basis. Upon adoption of ASU 2016-13 in 2020, the opening balance of the allowance for credit losses was increased by $38.1 million through retained earnings.
For commercial real estate, consumer real estate, construction and land development, and commercial and industrial loans, Pinnacle Financial primarily utilizes a probability of default and loss given default modeling approach. These models utilize historical correlations between default experience and certain macroeconomic factors as determined through a statistical regression analysis. All loan segments modeled using this approach consider changes in the national unemployment rate. In addition to the national unemployment rate, GDP and the three month treasury rate are considered for owner occupied commercial real estate, the commercial real estate price index and the five year treasury rate are considered for construction loans, and the three month treasury rate is considered for commercial and industrial loans. For the consumer and other loan segment, a non-statistical approach based on historical charge off rates is utilized.
Losses are predicted over a period of time determined to be reasonable and supportable, and at the end of the reasonable and supportable period losses are reverted to long term historical averages. The reasonable and supportable period and reversion period are re-evaluated each quarter by Pinnacle Financial and are dependent on the current economic environment among other factors. At March 31, 2021 and December 31, 2020, a reasonable and supportable period of 18 months was utilized for all loan segments, followed by a 12 month straight line reversion to long term averages.
The estimated loan losses for all loan segments are adjusted for changes in qualitative factors not inherently considered in the quantitative analyses. These adjustments are based upon quarterly trend assessments in portfolio concentrations, policy exceptions, associate retention, independent loan review results, collateral considerations, risk ratings, competition and peer group credit quality trends. The qualitative allowance allocation, as determined by the processes noted above, is increased or decreased for each loan segment based on the assessment of these various qualitative factors.
Loans that do not share similar risk characteristics with the collectively evaluated pools are evaluated on an individual basis and are excluded from the collectively evaluated pools. Individual evaluations are generally performed for loans greater than $1.0 million which have experienced significant credit deterioration. Such loans are evaluated for credit losses based on either discounted cash flows or the fair value of collateral.
The following table presents the amortized cost basis of collateral dependent loans, which are individually evaluated to determine
expected credit losses, as of March 31, 2021 and December 31, 2020 (in thousands):

| Real Estate | Business Assets | Other | Total
March 31, 2021 |  |  |  |
Commercial real estate: |  |  |  |
Owner-occupied | $ | 19,165 |  | $ | — |  | $ | — |  | $ | 19,165 |
Non-owner occupied | 5,187 |  | — |  | — |  | 5,187 |
Consumer real estate – mortgage | 24,683 |  | — |  | — |  | 24,683 |
Construction and land development | 1,648 |  | — |  | — |  | 1,648 |
Commercial and industrial | — |  | 11,888 |  | 634 |  | 12,522 |
Consumer and other | — |  | — |  | 28 |  | 28 |
Total | $ | 50,683 |  | $ | 11,888 |  | $ | 662 |  | $ | 63,233 |

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| Real Estate | Business Assets | Other | Total
December 31, 2020 |  |  |  |
Commercial real estate: |  |  |  |
Owner-occupied | $ | 15,681 |  | $ | — |  | $ | — |  | $ | 15,681 |
Non-owner occupied | 7,000 |  | — |  | — |  | 7,000 |
Consumer real estate – mortgage | 27,082 |  | — |  | — |  | 27,082 |
Construction and land development | 2,049 |  | — |  | — |  | 2,049 |
Commercial and industrial | — |  | 22,437 |  | 39 |  | 22,476 |
Consumer and other | — |  | — |  | 4 |  | 4 |
Total | $ | 51,812 |  | $ | 22,437 |  | $ | 43 |  | $ | 74,292 |

The table below presents the amortized cost basis of loans on nonaccrual status and loans past due 90 or more days and still accruing interest at March 31, 2021 and December 31, 2020. Also presented is the balance of loans on nonaccrual status at March 31, 2021 for which there was no related allowance for credit losses recorded (in thousands):

| March 31, 2021 |  | December 31, 2020
| Total nonaccrual loans |  | Nonaccrual loans with no allowance for credit losses |  | Loans past due 90 or more days and still accruing |  | Total nonaccrual loans |  | Nonaccrual loans with no allowance for credit losses |  | Loans past due 90 or more days and still accruing
Commercial real estate: |  |  |  |  |  |  |  |  |  |  |
Owner-occupied | $ | 13,023 |  |  | $ | 8,955 |  |  | $ | — |  |  | $ | 10,231 |  |  | $ | 5,985 |  |  | $ | — |
Non-owner occupied | 3,459 |  |  | — |  |  | — |  |  | 5,219 |  |  | 1,522 |  |  | — |
Consumer real estate – mortgage | 19,779 |  |  | — |  |  | — |  |  | 22,191 |  |  | — |  |  | 273 |
Construction and land development | 1,558 |  |  | — |  |  | — |  |  | 1,953 |  |  | — |  |  | — |
Commercial and industrial | 34,288 |  |  | 27,862 |  |  | 2,491 |  |  | 34,238 |  |  | 29,030 |  |  | 1,785 |
Consumer and other | 28 |  |  | — |  |  | 342 |  |  | 4 |  |  | — |  |  | 304 |
Total | $ | 72,135 |  |  | $ | 36,817 |  |  | $ | 2,833 |  |  | $ | 73,836 |  |  | $ | 36,537 |  |  | $ | 2,362 |

Pinnacle Financial's policy is the accrual of interest income will be discontinued when (1) there is a significant deterioration in the financial condition of the borrower and full repayment of principal and interest is not expected or (2) the principal or interest is more than 90 days past due, unless the loan is both well secured and in the process of collection. As such, at the date loans are placed on nonaccrual status, Pinnacle Financial reverses all previously accrued interest income against current year earnings. Pinnacle Financial's policy is once a loan is placed on nonaccrual status each subsequent payment is reviewed on a case-by-case basis to determine if the payment should be applied to interest or principal pursuant to regulatory guidelines. Pinnacle Financial recognized no interest income from cash payments received on nonaccrual loans during the three months ended March 31, 2021 and the three months ended March 31, 2020, respectively. Had these loans been on accruing status, an additional $696,000 of interest income would have been recognized for the three months ended March 31, 2021, compared to an additional $713,000 for the three months ended March 31, 2020. Approximately $51.7 million of nonaccrual loans as of each of March 31, 2021 and December 31, 2020 were performing pursuant to their contractual terms at those dates.
At both March 31, 2021 and December 31, 2020, there were $2.5 million of troubled debt restructurings that were performing as of their restructure date and which were accruing interest. Troubled commercial loans are restructured by specialists within Pinnacle Bank's Special Assets Group, and all restructurings are approved by committees and/or credit officers separate and apart from the normal loan approval process. These specialists are charged with reducing Pinnacle Financial's overall risk and exposure to loss in the event of a restructuring by obtaining some or all of the following: improved documentation, additional guaranties, increase in curtailments, reduction in collateral release terms, additional collateral or other similar strategies.
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There were no troubled debt restructurings made during the three months ended March 31, 2021. During the three months ended March 31, 2021 and 2020, there were no troubled debt restructurings that subsequently defaulted within twelve months of the restructuring.The following table outlines the amount of each loan category where troubled debt restructurings were made during the three months ended March 31, 2020 (in thousands):

|  |  | March 31, 2020
|  |  |  |  |  |  | Number of contracts |  | Pre Modification Outstanding Recorded Investment |  | Post Modification Outstanding Recorded Investment, net of related allowance
Consumer real estate – mortgage |  |  |  |  |  |  | 1 |  |  | 807 |  |  | 807 |

In response to the COVID-19 pandemic and its economic impact to its customers, Pinnacle Bank implemented a short-term modification program in accordance with interagency regulatory guidance to provide temporary payment relief to those borrowers directly impacted by COVID-19 who were not more than 30 days past due at the time of the modification. This program allows for a deferral of payments for 90 days, which Pinnacle Bank may extend for an additional 90 days, for a maximum of 180 days on a cumulative and successive basis. Pursuant to interagency guidance, such short-term deferrals are not deemed to meet the criteria for reporting as troubled debt restructurings. For borrowers requiring a longer-term modification following the short-term loan modification program, Pinnacle Financial worked with these borrowers whose loans were not more than 30 days past due at December 31, 2019 and who required modifications as a result of COVID-19 to modify such loans under Section 4013 of the CARES Act. The outstanding balances at March 31, 2021 of loans which have received such modifications was $835.1 million. In accordance with the provisions of the CARES Act, these modifications have not been classified as TDRs.
Pinnacle Financial analyzes its commercial loan portfolio to determine if a concentration of credit risk exists to any industries. Pinnacle Financial utilizes broadly accepted industry classification systems in order to classify borrowers into various industry classifications. Pinnacle Financial has a credit exposure (loans outstanding plus unfunded lines of credit) exceeding 25% of Pinnacle Bank's total risk-based capital to borrowers in the following industries at March 31, 2021 with the comparative exposures for December 31, 2020 (in thousands):

| March 31, 2021 |  |
| Outstanding Principal Balances |  | Unfunded Commitments |  | Total exposure |  | Total Exposure at December 31, 2020
Lessors of nonresidential buildings | $ | 3,553,989 |  |  | $ | 1,053,464 |  |  | $ | 4,607,453 |  |  | $ | 4,442,712 |
Lessors of residential buildings | 1,348,050 |  |  | 814,962 |  |  | 2,163,012 |  |  | 2,126,246 |
Hotels (except Casino Hotels) and Motels | 988,712 |  |  | 71,837 |  |  | 1,060,549 |  |  | 1,039,259 |
New Housing For-Sale Builders | 489,417 |  |  | 747,732 |  |  | 1,237,149 |  |  | 1,124,302 |

Pinnacle Financial monitors two ratios regarding construction and commercial real estate lending as part of its concentration management processes. Both ratios are calculated by dividing certain types of loan balances for each of the two categories by Pinnacle Bank’s total risk-based capital. At March 31, 2021 and December 31, 2020, Pinnacle Bank’s construction and land development loans as a percentage of total risk-based capital were 76.0% and 89.0%, respectively. Non-owner occupied commercial real estate and multifamily loans (including construction and land development loans) as a percentage of total risk-based capital were 256.0% and 264.0% as of March 31, 2021 and December 31, 2020, respectively. Banking regulations have established guidelines for the construction ratio of less than 100% of total risk-based capital and for the non-owner occupied ratio of less than 300% of total risk-based capital. When a bank’s ratios are in excess of one or both of these guidelines, banking regulations generally require an increased level of monitoring in these lending areas by bank management. At March 31, 2021, Pinnacle Bank was within the 100% and 300% guidelines and has established what it believes to be appropriate controls to monitor its lending in these areas as it aims to keep the level of these loans below the 100% and 300% thresholds.
At March 31, 2021, Pinnacle Bank had granted loans and other extensions of credit amounting to approximately $8.2 million to current directors, executive officers, and their related interests, of which $5.6 million had been drawn upon. At December 31, 2020, Pinnacle Bank had granted loans and other extensions of credit amounting to approximately $10.7 million to directors, executive officers, and their related interests, of which approximately $6.8 million had been drawn upon. All loans to directors, executive officers, and their related interests were performing in accordance with contractual terms at March 31, 2021 and December 31, 2020.
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At March 31, 2021, Pinnacle Financial had approximately $12.5 million in commercial loans held for sale compared to $31.2 million at December 31, 2020, which primarily included commercial real estate and apartment loans originated for sale to a third-party as part of a multi-family loan program. Such loans are closed under a pass-through commitment structure wherein Pinnacle Bank's loan commitment to the borrower is the same as the third party's take-out commitment to Pinnacle Bank and the third party purchase typically occurs within thirty days of Pinnacle Bank closing with the borrowers.
Residential Lending
At March 31, 2021, Pinnacle Financial had approximately $71.7 million of mortgage loans held-for-sale compared to approximately $67.8 million at December 31, 2020. Total loan volumes sold during the three months ended March 31, 2021 were approximately $547.0 million compared to approximately $286.7 million for the three months ended March 31, 2020. During the three months ended March 31, 2021, Pinnacle Financial recognized $13.7 million in gains on the sale of these loans, net of commissions paid, compared to $8.6 million during the three months ended March 31, 2020.
These mortgage loans held-for-sale are originated internally and are primarily to borrowers in Pinnacle Bank's geographic markets. These sales are typically on a mandatory basis to investors that follow conventional government sponsored entities (GSE) and the Department of Housing and Urban Development/U.S. Department of Veterans Affairs (HUD/VA) guidelines.
Each purchaser of a mortgage loan held-for-sale has specific guidelines and criteria for sellers of loans and the risk of credit loss with regard to the principal amount of the loans sold is generally transferred to the purchasers upon sale. While the loans are sold without recourse, the purchase agreements require Pinnacle Bank to make certain representations and warranties regarding the existence and sufficiency of file documentation and the absence of fraud by borrowers or other third parties such as appraisers in connection with obtaining the loan. If it is determined that the loans sold were in breach of these representations or warranties, Pinnacle Bank has obligations to either repurchase the loan for the unpaid principal balance and related investor fees or make the purchaser whole for the economic benefits of the loan. To date, Pinnacle Bank's liability pursuant to the terms of these representations and warranties has been insignificant to Pinnacle Bank.
Note 5. Income Taxes
ASC 740, Income Taxes, defines the threshold for recognizing the benefits of tax return positions in the financial statements as "more-likely-than-not" to be sustained by the taxing authority. This section also provides guidance on the derecognition, measurement and classification of income tax uncertainties, along with any related interest and penalties, and includes guidance concerning accounting for income tax uncertainties in interim periods.
The unrecognized tax benefit related to uncertain tax positions related to state income tax filings was $9.7 million at March 31, 2021 and December 31, 2020, respectively. No change was recorded to the unrecognized tax benefit related to uncertain tax positions in each of the three month periods ended March 31, 2021 and 2020.
Pinnacle Financial's policy is to recognize interest and/or penalties related to income tax matters in income tax expense. For both the three months ended March 31, 2021 and 2020, respectively, there were no interest and penalties recorded in the income statement.
Pinnacle Financial's effective tax rate for the three months ended March 31, 2021 was 18.4% compared to a benefit of 6.2% for the three months ended March 31, 2020. The difference between the effective tax rate and the federal and state income tax statutory rate of 26.14% at March 31, 2021 and 2020 is primarily due to investments in bank qualified municipal securities, tax benefits of Pinnacle Bank's real estate investment trust subsidiary, participation in the Tennessee Community Investment Tax Credit (CITC) program, and tax benefits associated with share-based compensation, bank-owned life insurance and Pinnacle Financial's captive insurance subsidiary, offset in part by the limitation on deductibility of meals and entertainment expense, non-deductible FDIC premiums and non-deductible executive compensation.
Income tax expense is also impacted by the vesting of equity-based awards and the exercise of employee stock options, which expense or benefit is recorded as a discrete item as a component of total income tax, the amount of which is dependent upon the change in the grant date fair value and the vest date fair value of the underlying award. Accordingly, for the three months ended March 31, 2021 we recognized excess tax benefits of $1.6 million compared to benefits of $862,000 for the three months ended March 31, 2020. For the three months ended March 31, 2020, income tax expense was also meaningfully impacted by provision for credit losses, including provision for credit losses resulting from the COVID-19 pandemic, which was recorded as a discrete item as a component of total income tax and contributed to a tax benefit of $22.4 million for the three months ended March 31, 2020.
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Note 6. Commitments and Contingent Liabilities
In the normal course of business, Pinnacle Financial has entered into off-balance sheet financial instruments which include commitments to extend credit (i.e., including unfunded lines of credit) and standby letters of credit. Commitments to extend credit are usually the result of lines of credit granted to existing borrowers under agreements that the total outstanding indebtedness will not exceed a specific amount during the term of the indebtedness. Typical borrowers are commercial concerns that use lines of credit to supplement their treasury management functions, thus their total outstanding indebtedness may fluctuate during any time period based on the seasonality of their business and the resultant timing of their cash flows. Other typical lines of credit are related to home equity loans granted to consumers. Commitments to extend credit generally have fixed expiration dates or other termination clauses and may require payment of a fee. At March 31, 2021, these commitments amounted to $10.2 billion, of which approximately $1.2 billion related to home equity lines of credit.
Standby letters of credit are generally issued on behalf of an applicant (customer) to a specifically named beneficiary and are the result of a particular business arrangement that exists between the applicant and the beneficiary. Standby letters of credit have fixed expiration dates and are usually for terms of two years or less unless terminated beforehand due to criteria specified in the standby letter of credit. A typical arrangement involves the applicant routinely being indebted to the beneficiary for such items as inventory purchases, insurance, utilities, lease guarantees or other third party commercial transactions. The standby letter of credit would permit the beneficiary to obtain payment from Pinnacle Financial under certain prescribed circumstances. Subsequently, Pinnacle Financial would then seek reimbursement from the applicant pursuant to the terms of the standby letter of credit. At March 31, 2021, these commitments amounted to $237.7 million.
Pinnacle Financial typically follows the same credit policies and underwriting practices when making these commitments as it does for on-balance sheet instruments. Each customer's creditworthiness is typically evaluated on a case-by-case basis, and the amount of collateral obtained, if any, is based on management's credit evaluation of the customer. Collateral held varies but may include cash, real estate and improvements, marketable securities, accounts receivable, inventory, equipment and personal property.
The contractual amounts of these commitments are not reflected in the consolidated financial statements and only amounts drawn upon would be reflected in the future. Since many of the commitments are expected to expire without being drawn upon, the contractual amounts do not necessarily represent future cash requirements. However, should the commitments be drawn upon and should Pinnacle Bank's customers default on their resulting obligation to Pinnacle Bank, the maximum exposure to credit loss, without consideration of collateral, is represented by the contractual amount of those commitments. At March 31, 2021 and December 31, 2020, Pinnacle Financial had accrued $23.2 million for the inherent risks associated with these off-balance sheet commitments.
Various legal claims also arise from time to time in the normal course of business. In the opinion of management, the resolutions of these claims outstanding at March 31, 2021 are not expected to have a material adverse impact on Pinnacle Financial's consolidated financial condition, operating results or cash flows.
Note 7. Stock Options and Restricted Shares
Pinnacle Financial's 2018 Omnibus Equity Incentive Plan (the "2018 Plan") permits Pinnacle Financial to reissue outstanding awards that are subsequently forfeited, settled in cash, withheld by Pinnacle Financial to cover withholding taxes or expire unexercised and returned to the 2018 Plan. At March 31, 2021, there were 679,075 shares available for issuance under the 2018 Plan. On April 21, 2021, Pinnacle Financial's common shareholders approved an amendment and restatement of the 2018 Plan that, among other things, authorized an additional 1,350,000 shares for issuance under the 2018 Plan.
Upon the acquisition of CapitalMark, Pinnacle Financial assumed approximately 858,000 stock options under the CapitalMark Option Plan. No further awards remain available for issuance under the CapitalMark Option Plan. At March 31, 2021, all of the remaining options outstanding were granted under the CapitalMark Option Plan.
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Common Stock Options
A summary of the stock option activity within the equity incentive plans during the three months ended March 31, 2021 and information regarding expected vesting, contractual terms remaining, intrinsic values and other matters is as follows:

| Number | Weighted-Average Exercise Price | Weighted-Average Contractual Remaining Term (in years) | Aggregate Intrinsic Value (000's) |
Outstanding at December 31, 2020 | 101,769 |  | $ | 23.46 |  | 1.86 | $ | 4,169 |  | (1)
Granted | — |  |  |  |  |
Exercised | (13,246) |  |  |  |  |
Forfeited | — |  |  |  |  |
Outstanding at March 31, 2021 | 88,523 |  | $ | 23.53 |  | 1.63 | $ | 5,766 |  | (2)
Options exercisable at March 31, 2021 | 88,523 |  | $ | 23.53 |  | 1.63 | $ | 5,766 |  | (2)

(1)The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of Pinnacle Financial common stock of $64.40 per common share at December 31, 2020 for the 101,769 options that were in-the-money at December 31, 2020.
(2)The aggregate intrinsic value is calculated as the difference between the exercise price of the underlying awards and the quoted closing price of Pinnacle Financial common stock of $88.66 per common share at March 31, 2021 for the 88,523 options that were in-the-money at March 31, 2021.
Compensation costs related to stock options granted under Pinnacle Financial's equity incentive plans have been fully recognized and all outstanding option awards are fully vested.
Restricted Share Awards
A summary of activity for unvested restricted share awards for the three months ended March 31, 2021 is as follows:

| Number |  | Grant Date Weighted-Average Cost
Unvested at December 31, 2020 | 594,669 |  |  | $ | 56.97 |
Shares awarded | 183,839 |  |  |
Restrictions lapsed and shares released to associates/directors | (129,599) |  |  |
Shares forfeited | (11,420) |  |  |
Unvested at March 31, 2021 | 637,489 |  |  | $ | 61.00 |

Pinnacle Financial has granted restricted share awards to associates and outside directors with a time-based vesting criteria. Compensation expense associated with time-based vesting restricted share awards is recognized over the time period that the restrictions associated with the awards lapse on a straight-line basis based on the total cost of the award. The following table outlines restricted stock grants that were made, grouped by similar vesting criteria, during the three months ended March 31, 2021. The table reflects the life-to-date activity for these awards:

Grant Year | Group (1) | Vesting Period in years | Shares awarded | Restrictions lapsed and shares released to participants | Shares withheld for taxes by participants | Shares Forfeited by participants (4) | Shares Unvested
Time Based Awards |  |  |  |  |  |  |  |  |
2021 | Associates (2) | 3 | - | 5 | 172,009 |  | 18 |  | 18 |  | 5,102 |  | 166,871 |
Outside Director Awards (3) |  |  |  |  |  |  |  |  |
2021 | Outside directors |  |  | 1 | 11,830 |  | — |  | — |  | — |  | 11,830 |

(1)Groups include employees (referred to as associates above) and outside directors. When the restricted shares are awarded, a participant receives voting rights and forfeitable dividend rights with respect to the shares, but is not able to transfer the shares until the restrictions have lapsed. Once the restrictions lapse, the participant is taxed on the value of the award and may elect to sell some shares (or have Pinnacle Financial withhold some shares) to pay the applicable income taxes associated with the award. Alternatively, the recipient can pay the withholding taxes in cash. For time-based vesting restricted share awards, dividends paid on shares for which the forfeiture restrictions do not lapse will be recouped by Pinnacle Financial at the time of termination. For awards to Pinnacle Financial's directors, dividends are placed into escrow until the forfeiture restrictions on such shares lapse.
(2)The forfeiture restrictions on these restricted share awards lapse in equal annual installments on the anniversary date of the grant.
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(3)Restricted share awards are issued to the outside members of the board of directors in accordance with their board compensation plan. Restrictions lapse on March 1, 2022 based on each individual board member meeting attendance goals for the various board and board committee meetings to which each member was scheduled to attend.
(4)These shares represent forfeitures resulting from recipients whose employment or board membership was terminated during the year-to-date period ended March 31, 2021. Any dividends paid on shares for which the forfeiture restrictions do not lapse will be recouped by Pinnacle Financial at the time of termination or will not be distributed from escrow, as applicable.
Restricted Stock Unit Awards
In 2021, Pinnacle Financial granted restricted stock units to its Named Executive Officers (NEOs) and leadership team members with time-based vesting criteria. Compensation expense associated with time-based vesting restricted stock unit awards is recognized over the time period that the restrictions associated with the awards lapse on a straight-line basis based on the total cost of the award. The following table outlines restricted stock unit grants that were made, grouped by similar vesting criteria, during the three months ended March 31, 2021. The table reflects the life-to-date activity for these awards:

Grant Year | Vesting Period in years | Shares awarded | Restrictions lapsed and shares released to participants | Shares withheld for taxes by participants | Shares Forfeited by participants (1) | Shares Unvested
2021 | 3 | 56,864 |  | 4 |  | 3 |  | — |  | 56,857 |

(1)These shares represent forfeitures resulting from recipients whose employment was terminated during the year-to-date period ended March 31, 2021. Dividend equivalents are held in escrow for award recipients for dividends paid prior to the forfeiture restrictions lapsing. Such dividend equivalents are not released from escrow if an award is forfeited.
Performance Stock Unit Awards
The following table details the performance stock unit awards outstanding at March 31, 2021:

| Units Awarded |  |  |  |
Grant year | NEOs (1) | Leadership Team other than NEOs | Applicable Performance Periods associated with each tranche (fiscal year) | Service period per tranche (in years) | Subsequent holding period per tranche (in years) | Period in which units to be settled into shares of common stock(2)
2021(3) | 89,234 | — | 214,155 |  | 45,240 |  | 2021-2023 | 0 | 0 | 2024
2020 | 136,137 | — | 204,220 |  | 59,648 |  | 2020 | 2 | 3 | 2025
|  |  |  |  | 2021 | 2 | 2 | 2025
|  |  |  |  | 2022 | 2 | 1 | 2025
2019 | 166,211 | — | 249,343 |  | 52,244 |  | 2019 | 2 | 3 | 2024
|  |  |  |  | 2020 | 2 | 2 | 2024
|  |  |  |  | 2021 | 2 | 1 | 2024
2018 | 96,878 | — | 145,339 |  | 25,990 |  | 2018 | 2 | 3 | 2023
|  |  |  |  | 2019 | 2 | 2 | 2023
|  |  |  |  | 2020 | 2 | 1 | 2023
2017 | 72,537 | — | 109,339 |  | 24,916 |  | 2017 | 2 | 3 | 2022
|  |  |  |  | 2018 | 2 | 2 | 2022
|  |  |  |  | 2019 | 2 | 1 | 2022

(1)The named executive officers are awarded a range of awards that may be earned based on attainment of goals between a target level of performance and a maximum level of performance.
(2)Performance stock unit awards granted prior to 2021, if earned, will be settled in shares of Pinnacle Financial Common Stock in the periods noted in the table, if Pinnacle Bank's ratio of non-performing assets to its loans plus ORE is less than amounts established in the applicable award agreement.
(3)Performance stock unit awards granted in 2021, if earned, will be settled in shares of Pinnacle Financial Common Stock in the period noted in the table, if the performance criterion included in the applicable performance unit award agreement are met.
During the three months ended March 31, 2021 and 2020, the restrictions associated with 133,041 and 129,723 performance stock unit awards granted in prior years lapsed, based on the terms of the agreement and approval by Pinnacle Financial's Human Resources and Compensation Committee, and were settled into shares of Pinnacle Financial common stock with 46,332 and 43,996 shares being withheld to pay the taxes associated with the settlement of those shares.
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Additionally, during the three months ended March 31, 2021, 199,633 performance stock unit awards granted in prior years were forfeited due to the failure to reach performance targets for the year ended December 31, 2020 as defined in the associated performance stock unit award agreements.
Stock compensation expense related to restricted share awards, restricted stock unit awards and performance stock unit awards for the three months ended March 31, 2021 was $5.4 million compared to $5.5 million for the three months ended March 31, 2020. As of March 31, 2021, the total compensation cost related to unvested restricted share awards, restricted stock unit awards and performance stock unit awards not yet recognized was $63.9 million. This expense, if the underlying units are earned, is expected to be recognized over a weighted-average period of 1.93 years.
Note 8. Derivative Instruments
Financial derivatives are reported at fair value in other assets or other liabilities. The accounting for changes in the fair value of a derivative depends on whether it has been designated and qualifies as part of a hedging relationship and classification as either a cash flow hedge or fair value hedge for those derivatives which are designated as part of a hedging relationship.
Non-hedge derivatives
For derivatives not designated as hedges, the gain or loss is recognized in current period earnings. Pinnacle Financial enters into interest rate swaps (swaps) to facilitate customer transactions and meet their financing needs. Upon entering into these instruments to meet customer needs, Pinnacle Financial enters into offsetting positions in order to minimize the risk to Pinnacle Financial. These swaps qualify as derivatives, but are not designated as hedging instruments. The income statement impact of the offsetting positions is limited to changes in the reserve for counterparty credit risk. A summary of Pinnacle Financial's interest rate swaps to facilitate customers' transactions as of March 31, 2021 and December 31, 2020 is included in the following table (in thousands):

|  | March 31, 2021 |  | December 31, 2020
|  | Notional Amount |  | Estimated Fair Value |  | Notional Amount |  | Estimated Fair Value
Interest rate swap agreements: |  |  |  |  |  |  |  |
Assets |  | $ | 1,618,283 |  |  | $ | 67,351 |  |  | $ | 1,565,916 |  |  | $ | 101,602 |
Liabilities |  | 1,618,283 |  |  | (68,218) |  |  | 1,565,916 |  |  | (102,919) |
Total |  | $ | 3,236,566 |  |  | $ | (867) |  |  | $ | 3,131,832 |  |  | $ | (1,317) |

The effects of Pinnacle Financial's interest rate swaps to facilitate customers' transactions on the income statement during the three months ended March 31, 2021 and 2020 were as follows (in thousands):

|  |  | Amount of Gain (Loss) Recognized in Income
| Location of Loss Recognized in Income |  | Three Months Ended March 31, |  |
|  | 2021 |  | 2020 |  |  |  |
Interest rate swap agreements | Other noninterest income |  | $ | 450 |  |  | $ | (343) |  |  |  |  |

Derivatives designated as cash flow hedges
For derivative instruments that are designated and qualify as a cash flow hedge, the aggregate fair value of the derivative instrument is recorded in other assets or other liabilities with any gain or loss related to changes in fair value recorded in accumulated other comprehensive income (loss), net of tax. The gain or loss is reclassified into earnings in the same period during which the hedged asset or liability affects earnings and is presented in the same income statement line item as the earnings effect of the hedged asset or liability. Pinnacle Financial uses forward cash flow hedge relationships in an effort to manage future interest rate exposure. The hedging strategy converts the LIBOR-based variable interest rate on forecasted borrowings to a fixed interest rate and is used in an effort to protect Pinnacle Financial from floating interest rate variability. A summary of Pinnacle Financial's cash flow hedge relationships as of March 31, 2021 and December 31, 2020 is as follows (in thousands):
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|  |  |  |  |  |  |  |  | March 31, 2021 |  | December 31, 2020
| Balance Sheet Location |  | Weighted Average Remaining Maturity (In Years) |  | Weighted Average Pay Rate |  | Receive Rate |  | Notional Amount |  | Estimated Fair Value |  | Notional Amount |  | Estimated Fair Value
Asset derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate floor | Other assets |  | 3.69 |  | —% |  | 2.25% minus one-month LIBOR |  | $ | 1,500,000 |  |  | $ | 100,564 |  |  | $ | 1,500,000 |  |  | $ | 124,585 |

The effects of Pinnacle Financial's cash flow hedge relationships on the statement of comprehensive income (loss) during the three months ended March 31, 2021 and 2020 were as follows, net of tax (in thousands):

| Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)
| Three Months Ended March 31, |  |
Asset derivatives | 2021 |  | 2020 |  |  |  |
Interest rate floor - loans | $ | (15,274) |  |  | $ | 65,349 |  |  |  |  |
Liability derivatives |  |  |  |  |  |  |
Interest rate swaps - borrowings | $ | — |  |  | $ | (1,580) |  |  |  |  |
| $ | (15,274) |  |  | $ | 63,769 |  |  |  |  |

The cash flow hedges were determined to be highly effective during the periods presented and as a result qualify for hedge accounting treatment. If a hedge was deemed to be ineffective, the amount included in accumulated other comprehensive income (loss) would be reclassified into a line item within the statement of income that impacts operating results. The hedge would no longer be considered effective if a portion of the hedge becomes ineffective, the item hedged is no longer in existence or Pinnacle Financial discontinues hedge accounting. Pinnacle Financial expects the hedges at March 31, 2021 to continue to be highly effective and qualify for hedge accounting during the remaining terms of the original hedging transactions. Losses on cash flow hedges totaling $504,000 and $1.8 million, net of tax, were reclassified from accumulated other comprehensive income (loss) into net income during the three months ended March 31, 2021 and 2020, respectively. During the first quarter of 2020, loan interest rate floors with a notional amount totaling $1.3 billion and unrealized gains totaling $16.5 million were terminated. These unrealized gains are being amortized into income on a straight line basis through October 2021. Approximately $4.7 million in unrealized gains, net of tax, are expected to be reclassified from accumulated other comprehensive income (loss) into net income over the next twelve months related to terminated cash flow hedges.
Derivatives designated as fair value hedges
For derivative instruments that are designated and qualify as a fair value hedge, the gain or loss on the derivative instrument as well as the offsetting loss or gain on the hedged asset or liability attributable to the hedged risk are recognized in current earnings. The gain or loss on the derivative instrument is presented on the same income statement line item as the earnings effect of the hedged item. Pinnacle Financial utilizes interest rate swaps designated as fair value hedges to mitigate the effect of changing interest rates on the fair values of fixed rate callable available-for-sale securities. The hedging strategy converts the fixed interest rates to LIBOR-based variable interest rates. These derivatives are designated as partial term hedges of selected cash flows covering specified periods of time prior to the call dates of the hedged securities.
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A summary of Pinnacle Financial's fair value hedge relationships as of March 31, 2021 and December 31, 2020 is as follows (in thousands):

|  |  |  |  |  |  |  |  |  | March 31, 2021 |  | December 31, 2020
|  | Balance Sheet Location |  | Weighted Average Remaining Maturity (In Years) |  | Weighted Average Pay Rate |  | Receive Rate |  | Notional Amount |  | Estimated Fair Value |  | Notional Amount |  | Estimated Fair Value
Asset Derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps - securities |  | Other assets |  | 8.34 |  | 0.58% |  | Federal Funds |  | $ | 231,421 |  |  | $ | 17,181 |  |  | $ | 231,421 |  |  | $ | 4,696 |
Liability derivatives |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps - securities |  | Other liabilities |  | 5.79 |  | 3.08% |  | 3 month LIBOR |  | $ | 477,510 |  |  | $ | (49,729) |  |  | $ | 477,510 |  |  | $ | (72,010) |
|  |  |  |  |  |  |  |  |  | $ | 708,931 |  |  | $ | (32,548) |  |  | $ | 708,931 |  |  | $ | (67,314) |

Notional amounts of $477.5 million included in the table receive a variable rate of interest based on three month LIBOR and notional amounts totaling $231.4 million receive a variable rate of interest based on the daily compounded federal funds rate.
The effects of Pinnacle Financial's securities fair value hedge relationships on the income statement during the three months ended March 31, 2021 and 2020 were as follows (in thousands):

| Location of Gain (Loss) |  | Amount of Gain (Loss) Recognized in Income
|  | Three Months Ended March 31, |  |
|  | 2021 |  | 2020 |  |  |  |
Interest rate swaps - securities | Interest income on securities |  | $ | 34,766 |  |  | $ | (38,873) |  |  |  |  |
Securities available-for-sale | Interest income on securities |  | $ | (34,766) |  |  | $ | 38,873 |  |  |  |  |

The following amounts were recorded on the balance sheet related to cumulative basis adjustments for fair value hedges at March 31, 2021 and December 31, 2020 (in thousands):

| Carrying Amount of the Hedged Assets |  | Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets
| March 31, 2021 |  | December 31, 2020 |  | March 31, 2021 |  | December 31, 2020
Line item on the balance sheet |  |  |  |  |  |  |
Securities available-for-sale | $ | 804,207 |  |  | $ | 841,543 |  |  | $ | 32,548 |  |  | $ | 67,314 |

During the three months ended March 31, 2021 and 2020, amortization expense totaling $924,000 and $1.1 million, respectively, related to previously terminated fair value hedges was recognized as a reduction to interest income on loans.
Note 9. Fair Value of Financial Instruments
FASB ASC 820, Fair Value Measurements and Disclosures, defines fair value, establishes a framework for measuring fair value in U.S. GAAP and expands disclosures about fair value measurements. The definition of fair value focuses on the exit price, i.e., the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, not the entry price, i.e., the price that would be paid to acquire the asset or received to assume the liability at the measurement date. The statement emphasizes that fair value is a market-based measurement; not an entity-specific measurement. Therefore, the fair value measurement should be determined based on the assumptions that market participants would use in pricing the asset or liability.
Valuation Hierarchy
FASB ASC 820 establishes a three-level valuation hierarchy for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of an asset or liability as of the measurement date. The three levels are defined as follows:
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•Level 1 – inputs to the valuation methodology are quoted prices (unadjusted) for identical assets or liabilities in active markets.
•Level 2 – inputs to the valuation methodology include quoted prices for similar assets and liabilities in active markets, and inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the financial instrument.
•Level 3 – inputs to the valuation methodology are unobservable and significant to the fair value measurement.
A financial instrument's categorization within the valuation hierarchy is based upon the lowest level of input that is significant to the fair value measurement. The following is a description of the valuation methodologies used for assets and liabilities measured at fair value, as well as the general classification of such assets and liabilities pursuant to the valuation hierarchy.
Assets
Securities available-for-sale – Where quoted prices are available for identical securities in an active market, securities are classified within Level 1 of the valuation hierarchy. Level 1 securities include highly liquid government securities and certain other financial products. If quoted market prices are not available, then fair values are estimated by using pricing models that use observable inputs or quoted prices of securities with similar characteristics and are classified within Level 2 of the valuation hierarchy. In certain cases where there is limited activity or less transparency around inputs to the valuation and more complex pricing models or discounted cash flows are used, securities are classified within Level 3 of the valuation hierarchy.
Other investments – Included in other investments are investments recorded at fair value primarily in certain nonpublic investments and funds. The valuation of these nonpublic investments requires management judgment due to the absence of observable quoted market prices, inherent lack of liquidity and the long-term nature of such assets. These investments are valued initially based upon transaction price. The carrying values of other investments are adjusted either upwards or downwards from the transaction price to reflect expected exit values as evidenced by financing and sale transactions with third parties, or when determination of a valuation adjustment is confirmed through ongoing reviews by senior investment managers. A variety of factors are reviewed and monitored to assess positive and negative changes in valuation including, but not limited to, current operating performance and future expectations of the particular investment, industry valuations of comparable public companies and changes in market outlook and the third-party financing environment over time. In determining valuation adjustments resulting from the investment review process, emphasis is placed on current company performance and market conditions. These investments are included in Level 3 of the valuation hierarchy if the entities and funds are not widely traded and the underlying investments are in privately-held and/or start-up companies for which market values are not readily available. Certain investments in funds for which the underlying assets of the fund represent publicly traded investments are included in Level 2 of the valuation hierarchy.
Other assets – Included in other assets are certain assets carried at fair value, including interest rate swap agreements to facilitate customer transactions, interest rate floors designated as cash flow hedges, and interest rate locks associated with the mortgage loan pipeline. The carrying amount of interest rate swap agreements is based on Pinnacle Financial's pricing models that utilize observable market inputs. The fair value of the cash flow hedge agreements is determined by calculating the difference between the discounted fixed rate cash flows and the discounted variable rate cash flows. The fair value of the mortgage loan pipeline is based upon the projected sales price of the underlying loans, taking into account market interest rates and other market factors at the measurement date, net of the projected fallout rate. Pinnacle Financial reflects these assets within Level 2 of the valuation hierarchy as these assets are valued using similar transactions that occur in the market.
Collateral dependent loans – Collateral dependent loans are measured at the fair value of the collateral securing the loan less estimated selling costs. The fair value of real estate collateral is determined based on real estate appraisals which are generally based on recent sales of comparable properties which are then adjusted for property specific factors. Non-real estate collateral is valued based on various sources, including third party asset valuations and internally determined values based on cost adjusted for depreciation and other judgmentally determined discount factors. Collateral dependent loans are classified within Level 3 of the hierarchy due to the unobservable inputs used in determining their fair value such as collateral values and the borrower's underlying financial condition.
Other real estate owned – Other real estate owned (OREO) represents real estate foreclosed upon by Pinnacle Bank through loan defaults by customers or acquired by deed in lieu of foreclosure. A significant portion of these amounts relate to lots, homes and development projects that are either completed or are in various stages of construction for which Pinnacle Financial believes it has adequate collateral. Upon foreclosure, the property is recorded at the lower of cost or fair value, based on appraised value, less selling costs estimated as of the date acquired with any loss recognized as a charge-off through the allowance for credit losses. Additional OREO losses for subsequent valuation downward adjustments are determined on a specific property basis and are included as a
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component of noninterest expense along with holding costs. Any gains or losses realized at the time of disposal are also reflected in noninterest expense, as applicable. OREO is included in Level 3 of the valuation hierarchy due to the lack of observable market inputs into the determination of fair value as appraisal values are property-specific and sensitive to the changes in the overall economic environment.
Liabilities
Other liabilities – Pinnacle Financial has certain liabilities carried at fair value including certain interest rate swap agreements to facilitate customer transactions, interest rate swaps designated as fair value and cash flow hedges, and interest rate locks associated with the funding for its mortgage loan originations. The fair value of these liabilities is based on Pinnacle Financial's pricing models that utilize observable market inputs and is reflected within Level 2 of the valuation hierarchy.
The following tables present financial instruments measured at fair value on a recurring basis as of March 31, 2021 and December 31, 2020, by caption on the consolidated balance sheets and by FASB ASC 820 valuation hierarchy (as described above) (in thousands):

| Total carrying value in the consolidated balance sheet |  | Quoted market prices in an active market (Level 1) |  | Models with significant observable market parameters (Level 2) |  | Models with significant unobservable market parameters (Level 3)
March 31, 2021 |  |  |  |  |  |  |
Investment securities available-for-sale: |  |  |  |  |  |  |
U.S. Treasury securities | $ | 83,993 |  |  | $ | — |  |  | $ | 83,993 |  |  | $ | — |
U.S. government agency securities | 157,456 |  |  | — |  |  | 157,456 |  |  | — |
Mortgage-backed securities | 1,609,778 |  |  | — |  |  | 1,609,778 |  |  | — |
State and municipal securities | 1,512,360 |  |  | — |  |  | 1,498,847 |  |  | 13,513 |
Agency-backed securities | 190,695 |  |  | — |  |  | 190,695 |  |  | — |
Corporate notes and other | 122,737 |  |  | — |  |  | 122,737 |  |  | — |
Total investment securities available-for-sale | 3,677,019 |  |  | — |  |  | 3,663,506 |  |  | 13,513 |
Other investments | 87,347 |  |  | — |  |  | 25,218 |  |  | 62,129 |
Other assets | 190,753 |  |  | — |  |  | 190,753 |  |  | — |
Total assets at fair value | $ | 3,955,119 |  |  | $ | — |  |  | $ | 3,879,477 |  |  | $ | 75,642 |
Other liabilities | $ | 116,646 |  |  | $ | — |  |  | $ | 116,646 |  |  | $ | — |
Total liabilities at fair value | $ | 116,646 |  |  | $ | — |  |  | $ | 116,646 |  |  | $ | — |
December 31, 2020 |  |  |  |  |  |  |
Investment securities available-for-sale: |  |  |  |  |  |  |
U.S. Treasury securities | $ | 82,209 |  |  | $ | — |  |  | $ | 82,209 |  |  | $ | — |
U.S. government agency securities | 76,403 |  |  | — |  |  | 76,403 |  |  | — |
Mortgage-backed securities | 1,689,191 |  |  | — |  |  | 1,689,191 |  |  | — |
State and municipal securities | 1,443,363 |  |  | — |  |  | 1,427,866 |  |  | 15,497 |
Agency-backed securities | 177,936 |  |  | — |  |  | 177,936 |  |  | — |
Corporate notes and other | 117,579 |  |  | — |  |  | 117,579 |  |  | — |
Total investment securities available-for-sale | 3,586,681 |  |  | — |  |  | 3,571,184 |  |  | 15,497 |
Other investments | 73,395 |  |  | — |  |  | 25,636 |  |  | 47,759 |
Other assets | 242,470 |  |  | — |  |  | 242,470 |  |  | — |
Total assets at fair value | $ | 3,902,546 |  |  | $ | — |  |  | $ | 3,839,290 |  |  | $ | 63,256 |
Other liabilities | $ | 177,025 |  |  | $ | — |  |  | $ | 177,025 |  |  | $ | — |
Total liabilities at fair value | $ | 177,025 |  |  | $ | — |  |  | $ | 177,025 |  |  | $ | — |

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The following table presents assets measured at fair value on a nonrecurring basis as of March 31, 2021 and December 31, 2020 (in thousands):

March 31, 2021 | Total carrying value in the consolidated balance sheet |  | Quoted market prices in an active market (Level 1) |  | Models with significant observable market parameters (Level 2) |  | Models with significant unobservable market parameters (Level 3)
Other real estate owned | $ | 10,651 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,651 |
Collateral dependent loans (1) | 40,890 |  |  | — |  |  | — |  |  | 40,890 |
Total | $ | 51,541 |  |  | $ | — |  |  | $ | — |  |  | $ | 51,541 |
December 31, 2020 |  |  |  |  |  |  |
Other real estate owned | $ | 12,360 |  |  | $ | — |  |  | $ | — |  |  | $ | 12,360 |
Collateral dependent loans (1) | 43,795 |  |  | — |  |  | — |  |  | 43,795 |
Total | $ | 56,155 |  |  | $ | — |  |  | $ | — |  |  | $ | 56,155 |

(1) The carrying values of collateral dependent loans at March 31, 2021 and December 31, 2020 are net of valuation allowances of $2.7 million and $3.5 million, respectively.
In the case of the investment securities portfolio, Pinnacle Financial monitors the portfolio to ascertain when transfers between levels have been affected. The nature of the remaining assets and liabilities is such that transfers in and out of any level are expected to be rare. For the three months ended March 31, 2021, there were no transfers between Levels 1, 2 or 3.
The table below includes a rollforward of the balance sheet amounts for the three months ended March 31, 2021 and March 31, 2020 (including the change in fair value) for financial instruments classified by Pinnacle Financial within Level 3 of the valuation hierarchy measured at fair value on a recurring basis including changes in fair value due in part to observable factors that are part of the valuation methodology (in thousands):

| For the Three months ended March 31, |  |
| 2021 | 2020 |  |  |
| Available-for-sale Securities | Other investments |  | Available-for-sale Securities | Other investments |  |  |  |  |  |  |  |
Fair value, beginning of period | $ | 15,497 |  | $ | 47,759 |  |  | $ | 15,903 |  | $ | 38,156 |  |  |  |  |  |  |  |  |
Total realized gains (losses) included in income | 42 |  | 3,440 |  |  | 28 |  | (174) |  |  |  |  |  |  |  |  |
Changes in unrealized gains/losses included in other comprehensive income for assets and liabilities still held at period-end | (1,875) |  | — |  |  | (21) |  | — |  |  |  |  |  |  |  |  |
Purchases | — |  | 12,432 |  |  | — |  | 2,361 |  |  |  |  |  |  |  |  |
Issuances | — |  | — |  |  | — |  | — |  |  |  |  |  |  |  |  |
Settlements | (151) |  | (1,502) |  |  | (1,143) |  | (587) |  |  |  |  |  |  |  |  |
Transfers out of Level 3 | — |  | — |  |  | — |  | — |  |  |  |  |  |  |  |  |
Fair value, end of period | $ | 13,513 |  | $ | 62,129 |  |  | $ | 14,767 |  | $ | 39,756 |  |  |  |  |  |  |  |  |
Total realized gains (losses) included in income related to financial assets and liabilities still on the consolidated balance sheet at period-end | $ | 42 |  | $ | 3,440 |  |  | $ | 28 |  | $ | (174) |  |  |  |  |  |  |  |  |

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The following tables present the carrying amounts, estimated fair value and placement in the fair value hierarchy of Pinnacle Financial's financial instruments at March 31, 2021 and December 31, 2020. This table excludes financial instruments for which the carrying amount approximates fair value. For short-term financial assets such as cash, cash equivalents, and restricted cash, the carrying amount is a reasonable estimate of fair value due to the relatively short time between the origination of the instrument and its expected realization. For financial liabilities such as non-interest bearing demand, interest-bearing demand, and savings deposits, the carrying amount is a reasonable estimate of fair value due to these products having no stated maturity (in thousands):

| Carrying/ Notional Amount |  | Estimated Fair Value (1) |  | Quoted market prices in an active market (Level 1) |  | Models with significant observable market parameters (Level 2) |  | Models with significant unobservable market parameters (Level 3)
March 31, 2021 |  |  |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |  |  |
Securities purchased with agreement to resell | $ | 450,000 |  |  | $ | 433,935 |  |  | $ | — |  |  | $ | — |  |  | $ | 433,935 |
Securities held-to-maturity | 1,014,345 |  |  | 1,033,749 |  |  | — |  |  | 1,033,749 |  |  | — |
Loans, net | 22,805,820 |  |  | 22,808,139 |  |  | — |  |  | — |  |  | 22,808,139 |
Consumer loans held-for-sale | 85,769 |  |  | 86,403 |  |  | — |  |  | 86,403 |  |  | — |
Commercial loans held-for-sale | 12,541 |  |  | 12,634 |  |  | — |  |  | 12,634 |  |  | — |
Financial liabilities: |  |  |  |  |  |  |  |  |
Deposits and securities sold under |  |  |  |  |  |  |  |  |
agreements to repurchase | 28,465,057 |  |  | 27,539,943 |  |  | — |  |  | — |  |  | 27,539,943 |
Federal Home Loan Bank advances | 888,115 |  |  | 928,035 |  |  | — |  |  | — |  |  | 928,035 |
Subordinated debt and other borrowings | 671,002 |  |  | 661,693 |  |  | — |  |  | — |  |  | 661,693 |
Off-balance sheet instruments: |  |  |  |  |  |  |  |  |
Commitments to extend credit (2) | 10,422,083 |  |  | 25,019 |  |  | — |  |  | — |  |  | 25,019 |
December 31, 2020 |  |  |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |  |  |
Securities held-to-maturity | $ | 1,028,359 |  |  | $ | 1,066,531 |  |  | $ | — |  |  | $ | 1,066,531 |  |  | $ | — |
Loans, net | 22,139,451 |  |  | 22,407,546 |  |  | — |  |  | — |  |  | 22,407,546 |
Consumer loans held-for-sale | 87,821 |  |  | 89,625 |  |  | — |  |  | 89,625 |  |  | — |
Commercial loans held-for-sale | 31,200 |  |  | 31,841 |  |  | — |  |  | 31,841 |  |  | — |
Financial liabilities: |  |  |  |  |  |  |  |  |
Deposits and securities sold under |  |  |  |  |  |  |  |  |
agreements to repurchase | 27,833,739 |  |  | 26,929,142 |  |  | — |  |  | — |  |  | 26,929,142 |
Federal Home Loan Bank advances | 1,087,927 |  |  | 1,189,035 |  |  | — |  |  | — |  |  | 1,189,035 |
Subordinated debt and other borrowings | 670,575 |  |  | 677,521 |  |  | — |  |  | — |  |  | 677,521 |
Off-balance sheet instruments: |  |  |  |  |  |  |  |  |
Commitments to extend credit (2) | 9,692,607 |  |  | 24,887 |  |  | — |  |  | — |  |  | 24,887 |

(1)Estimated fair values are consistent with an exit-price concept. The assumptions used to estimate the fair values are intended to approximate those that a market-participant would realize in a hypothetical orderly transaction.
(2)At the end of each quarter, Pinnacle Financial evaluates the inherent risks of the outstanding off-balance sheet commitments, including both commitments for unfunded loans and standby letters of credit. In making this evaluation, Pinnacle Financial utilizes credit loss expectations on funded loans from our allowance for credit losses methodology and evaluates the probability that the outstanding commitment will eventually become a funded loan. As a result, at March 31, 2021 and December 31, 2020, Pinnacle Financial included in other liabilities $23.2 million, representing expected credit losses on off-balance sheet commitments, which are reflected in the estimated fair values of the related commitments. Also included in the fair values at March 31, 2021 and December 31, 2020 are unamortized fees related to these commitments of $1.8 million and $1.7 million, respectively.
Note 10. Regulatory Matters
Pursuant to Tennessee banking law, Pinnacle Bank may not, without the prior consent of the Commissioner of the Tennessee Department of Financial Institutions (TDFI), pay any dividends to Pinnacle Financial in a calendar year in excess of the total of Pinnacle Bank's retained net income for that year plus the retained net income for the preceding two years. Under Tennessee corporate
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law, Pinnacle Financial is not permitted to pay dividends if, after giving effect to such payment, it would not be able to pay its debts as they become due in the usual course of business or its total assets would be less than the sum of its total liabilities plus any amounts needed to satisfy any preferential rights if it were dissolving. In addition, in deciding whether or not to declare a dividend of any particular size, Pinnacle Financial's board of directors must consider its and Pinnacle Bank's current and prospective capital, liquidity, and other needs. In addition to state law limitations on Pinnacle Financial's ability to pay dividends, the Federal Reserve imposes limitations on Pinnacle Financial's ability to pay dividends. Federal Reserve regulations limit dividends, stock repurchases and discretionary bonuses to executive officers if Pinnacle Financial's regulatory capital is below the level of regulatory minimums plus the applicable capital conservation buffer.
In addition, the Federal Reserve has issued supervisory guidance advising bank holding companies to eliminate, defer or reduce dividends paid on common stock and other forms of Tier 1 capital where the company’s net income available to shareholders for the past four quarters, net of dividends previously paid during that period, is not sufficient to fully fund the dividends, the company’s prospective rate of earnings retention is not consistent with the company’s capital needs and overall current and prospective financial condition or the company will not meet, or is in danger of not meeting, minimum regulatory capital adequacy ratios. Recent supplements to this guidance reiterate the need for bank holding companies to inform their applicable reserve bank sufficiently in advance of the proposed payment of a dividend in certain circumstances.
During the three months ended March 31, 2021, Pinnacle Bank paid no dividends to Pinnacle Financial. As of March 31, 2021, Pinnacle Bank could pay approximately $574.3 million of additional dividends to Pinnacle Financial without prior approval of the Commissioner of the TDFI. Since the fourth quarter of 2013, Pinnacle Financial has paid a quarterly common stock dividend. The board of directors of Pinnacle Financial has increased the dividend amount per share over time. The most recent increase occurred on January 19, 2021, when the board of directors increased the dividend to $0.18 per common share from $0.16 per common share. During the second quarter of 2020, the Pinnacle Financial issued 9.0 million depositary shares, each representing a 1/40th fractional interest in a share of Series B noncumulative, perpetual preferred stock (the "Series B Preferred Stock") in a registered public offering to both retail and institutional investors. Beginning in the third quarter of 2020, Pinnacle Financial began paying a quarterly dividend of $16.88 per share (or $0.422 per depositary share), on the Series B Preferred Stock.
The amount and timing of all future dividend payments by Pinnacle Financial, if any, including dividends on Pinnacle Financial's Series B Preferred Stock, is subject to discretion of Pinnacle Financial's board of directors and will depend on Pinnacle Financial's receipt of dividends from Pinnacle Bank, earnings, capital position, financial condition and other factors, including regulatory capital requirements, as they become known to Pinnacle Financial and receipt of any regulatory approvals that may become required as a result of each of Pinnacle Financial's or Pinnacle Bank's financial results.
Pinnacle Financial and Pinnacle Bank are subject to various regulatory capital requirements administered by federal banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory, and possibly additional discretionary, actions by regulators that, if undertaken, could have a direct material effect on the financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, Pinnacle Financial and Pinnacle Bank must meet specific capital guidelines that involve quantitative measures of the assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. Pinnacle Financial's and Pinnacle Bank's capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors.
Quantitative measures established by regulation to ensure capital adequacy require Pinnacle Financial and its banking subsidiary to maintain minimum amounts and ratios of common equity Tier 1 capital to risk-weighted assets, Tier 1 capital to risk-weighted assets, total risk-based capital to risk-weighted assets and Tier 1 capital to average assets.
As permitted by the interim final rule issued on March 27, 2020 by the federal banking regulatory agencies, each of Pinnacle Bank and Pinnacle Financial has elected the option to delay the estimated impact on regulatory capital of Pinnacle Financial's and Pinnacle Bank's adoption of ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”, which was effective January 1, 2020. The initial impact of adoption of ASU 2016-13, as well as 25% of the quarterly increases in the allowance for credit losses subsequent to adoption of ASU 2016-13 (collectively the “transition adjustments”), will be delayed until December 31, 2021. After that date, the cumulative amount of the transition adjustments will become fixed and will be phased out of the regulatory capital calculations evenly over a three year period, with 75% recognized in 2022, 50% recognized in 2023, and 25% recognized in 2024. Beginning on January 1, 2025, the temporary regulatory capital benefits will be fully reversed.
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Management believes, as of March 31, 2021, that Pinnacle Financial and Pinnacle Bank met all capital adequacy requirements to which they are subject. To be categorized as well-capitalized under applicable banking regulations, Pinnacle Bank must maintain certain total risk-based, Tier 1 risk-based, common equity Tier 1 and Tier 1 leverage ratios as set forth in the following table and not be subject to a written agreement, order or directive to maintain a higher capital level. The capital conservation buffer is not included in the required ratios of the table presented below. Pinnacle Financial's and Pinnacle Bank's actual capital amounts and resulting ratios, not including the capital conservation buffer, are presented in the following table (in thousands):

| Actual |  | Minimum Capital Requirement |  | Minimum To Be Well-Capitalized
| Amount | Ratio |  | Amount | Ratio |  | Amount | Ratio
At March 31, 2021 |  |  |  |  |  |  |  |
Total capital to risk weighted assets: |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 3,784,041 |  | 14.5 | % |  | $ | 2,088,413 |  | 8.0 | % |  | $ | 2,610,516 |  | 10.0 | %
Pinnacle Bank | $ | 3,382,392 |  | 13.0 | % |  | $ | 2,081,224 |  | 8.0 | % |  | $ | 2,601,529 |  | 10.0 | %
Tier 1 capital to risk weighted assets: |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 2,911,788 |  | 11.2 | % |  | $ | 1,566,309 |  | 6.0 | % |  | $ | 2,088,413 |  | 8.0 | %
Pinnacle Bank | $ | 3,059,140 |  | 11.8 | % |  | $ | 1,560,918 |  | 6.0 | % |  | $ | 2,081,224 |  | 8.0 | %
Common equity Tier 1 capital to risk weighted assets |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 2,694,539 |  | 10.3 | % |  | $ | 1,174,732 |  | 4.5 | % |  | NA | NA
Pinnacle Bank | $ | 3,059,017 |  | 11.8 | % |  | $ | 1,170,688 |  | 4.5 | % |  | $ | 1,690,994 |  | 6.5 | %
Tier 1 capital to average assets (*): |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 2,911,788 |  | 8.9 | % |  | $ | 1,306,257 |  | 4.0 | % |  | NA | NA
Pinnacle Bank | $ | 3,059,140 |  | 9.4 | % |  | $ | 1,302,421 |  | 4.0 | % |  | $ | 1,628,026 |  | 5.0 | %
At December 31, 2020 |  |  |  |  |  |  |  |
Total capital to risk weighted assets: |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 3,678,405 |  | 14.3 | % |  | $ | 2,063,352 |  | 8.0 | % |  | $ | 2,579,190 |  | 10.0 | %
Pinnacle Bank | $ | 3,259,538 |  | 12.7 | % |  | $ | 2,055,892 |  | 8.0 | % |  | $ | 2,569,865 |  | 10.0 | %
Tier 1 capital to risk weighted assets: |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 2,803,541 |  | 10.9 | % |  | $ | 1,547,514 |  | 6.0 | % |  | $ | 2,063,352 |  | 8.0 | %
Pinnacle Bank | $ | 2,933,674 |  | 11.4 | % |  | $ | 1,541,919 |  | 6.0 | % |  | $ | 2,055,892 |  | 8.0 | %
Common equity Tier 1 capital to risk weighted assets |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 2,586,292 |  | 10.0 | % |  | $ | 1,160,635 |  | 4.5 | % |  | NA | NA
Pinnacle Bank | $ | 2,933,551 |  | 11.4 | % |  | $ | 1,156,439 |  | 4.5 | % |  | $ | 1,670,412 |  | 6.5 | %
Tier 1 capital to average assets (*): |  |  |  |  |  |  |  |
Pinnacle Financial | $ | 2,803,541 |  | 8.6 | % |  | $ | 1,298,756 |  | 4.0 | % |  | NA | NA
Pinnacle Bank | $ | 2,933,674 |  | 9.1 | % |  | $ | 1,294,033 |  | 4.0 | % |  | $ | 1,617,541 |  | 5.0 | %

(*) Average assets for the above calculations were based on the most recent quarter.
During the second quarter of 2020, Pinnacle Financial issued 9.0 million depositary shares, each representing a 1/40th interest in a share of Series B preferred stock in a registered public offering to both retail and institutional investors. Net proceeds from the transaction were approximately $217.1 million after deducting the underwriting discounts and offering expenses payable by Pinnacle Financial. The net proceeds were initially retained by Pinnacle Financial and the remaining net proceeds are available to support the capital needs of Pinnacle Financial and Pinnacle Bank, to support Pinnacle Financial's obligations, including interest payments on its outstanding indebtedness and dividend payments on the Series B preferred stock, and for other general corporate purposes.
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Note 11. Other Borrowings
Pinnacle Financial has twelve wholly-owned subsidiaries that are statutory business trusts created for the exclusive purpose of issuing 30-year capital trust preferred securities and Pinnacle Financial and Pinnacle Bank have entered into certain other subordinated debt agreements. These instruments are outlined below as of March 31, 2021 (in thousands):

Name | Date Established | Maturity | Total Debt Outstanding | Interest Rate at March 31, 2021 | Coupon Structure
Trust preferred securities |  |  |  |
Pinnacle Statutory Trust I | December 29, 2003 | December 30, 2033 | $ | 10,310 |  | 2.98 | % | 30-day LIBOR + 2.80%
Pinnacle Statutory Trust II | September 15, 2005 | September 30, 2035 | 20,619 |  | 1.60 | % | 30-day LIBOR + 1.40%
Pinnacle Statutory Trust III | September 7, 2006 | September 30, 2036 | 20,619 |  | 1.85 | % | 30-day LIBOR + 1.65%
Pinnacle Statutory Trust IV | October 31, 2007 | September 30, 2037 | 30,928 |  | 3.03 | % | 30-day LIBOR + 2.85%
BNC Capital Trust I | April 3, 2003 | April 15, 2033 | 5,155 |  | 3.49 | % | 30-day LIBOR + 3.25%
BNC Capital Trust II | March 11, 2004 | April 7, 2034 | 6,186 |  | 3.09 | % | 30-day LIBOR + 2.85%
BNC Capital Trust III | September 23, 2004 | September 23, 2034 | 5,155 |  | 2.64 | % | 30-day LIBOR + 2.40%
BNC Capital Trust IV | September 27, 2006 | December 31, 2036 | 7,217 |  | 1.90 | % | 30-day LIBOR + 1.70%
Valley Financial Trust I | June 26, 2003 | June 26, 2033 | 4,124 |  | 3.30 | % | 30-day LIBOR + 3.10%
Valley Financial Trust II | September 26, 2005 | December 15, 2035 | 7,217 |  | 1.67 | % | 30-day LIBOR + 1.49%
Valley Financial Trust III | December 15, 2006 | January 30, 2037 | 5,155 |  | 1.94 | % | 30-day LIBOR + 1.73%
Southcoast Capital Trust III | August 5, 2005 | September 30, 2035 | 10,310 |  | 1.70 | % | 30-day LIBOR + 1.50%
Subordinated Debt |  |  |  |
Pinnacle Bank Subordinated Notes | July 30, 2015 | July 30, 2025 | 60,000 |  | 3.33 | % | 3-month LIBOR + 3.128%
Pinnacle Bank Subordinated Notes | March 10, 2016 | July 30, 2025 | 70,000 |  | 3.33 | % | 3-month LIBOR + 3.128%
Pinnacle Financial Subordinated Notes | November 16, 2016 | November 16, 2026 | 120,000 |  | 5.25 | % | Fixed (1)
Pinnacle Financial Subordinated Notes | September 11, 2019 | September 15, 2029 | 300,000 |  | 4.13 | % | Fixed (2)
Debt issuance costs and fair value adjustments | (11,993) |  |  |
Total subordinated debt and other borrowings | $ | 671,002 |  |  |

(1) Migrates to three month LIBOR + 3.884% beginning November 16, 2021 through the end of the term.
(2) Migrates to three month LIBOR + 2.775% beginning September 15, 2024 through the end of the term.
Effective January 1, 2020, Pinnacle Financial used $80.0 million of the net proceeds from our 2019 subordinated debt offering to redeem certain other of our subordinated notes, including the $20.0 million aggregate principal amount of Avenue subordinated notes and $60.0 million aggregate principal amount of BNC subordinated notes. Pursuant to regulatory guidelines, once the maturity date on these subordinated notes is within five years, a portion of the notes will no longer be eligible to be included in regulatory capital, with an additional portion being excluded each year over the five year period approaching maturity.
On April 22, 2020, Pinnacle Financial established a credit facility with the Federal Reserve Bank in conjunction with the SBA Paycheck Protection Program, with available borrowing capacity equal to the outstanding balance of Paycheck Protection Program loans, which totaled approximately $2.2 billion at March 31, 2021. There are no amounts outstanding on this facility at March 31, 2021.
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ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The following is a discussion of our financial condition at March 31, 2021 and December 31, 2020 and our results of operations for the three months ended March 31, 2021 and 2020. The purpose of this discussion is to focus on information about our financial condition and results of operations which is not otherwise apparent from our consolidated financial statements. The following discussion and analysis should be read along with our consolidated financial statements and the related notes included elsewhere herein and the risk factors discussed in Part II, Item 1A - Risk Factors, herein as well as our Annual Report on Form 10-K for the year ended December 31, 2020 (Form 10-K) and the other reports we have filed with the Securities and Exchange Commission since we filed that Form 10-K.
Impact of COVID-19 Pandemic
The outbreak and spread of a novel strain of the coronavirus or, COVID-19, has created a global public health crisis that has resulted in unprecedented uncertainty, volatility and disruption in financial markets and in governmental, commercial and consumer activity in the United States and globally, including the markets that we serve. These actions included the decision by the Federal Reserve Open Markets Committee to lower the target for the federal funds rate to a range of between zero to 0.25% on March 15, 2020. This action followed a prior reduction of the targeted federal funds rate to a range of 1.0% to 1.25% on March 3, 2020.
We have been intentional in our response to the COVID-19 pandemic to ensure strength in our balance sheet, including, initially, increases in liquidity and reserves. As a part of this intentional response, we conducted an extensive loan review and re-risk grading process in 2020. During the second quarter of 2020, we performed an in-depth review of all risk-graded loans greater than $1.0 million for which we had granted the borrower the ability to defer the payment of principal and/or interest for a period of up to 90 days following the COVID-19 outbreak. We also performed an in-depth review of all of our hotel and retail commercial real estate loans greater than $1.0 million regardless of their receipt of deferral. During the third quarter of 2020, our focus broadened to include the other segments of the portfolio that are risk rated that we did not re-risk grade during the second quarter. This extensive re-underwriting effort included our pass grade loans with exposures greater than $2.0 million and watch list, criticized or classified loans with exposures greater than $500,000. During the fourth quarter of 2020 and again in the first quarter of 2021, we performed a follow-up in-depth review of hotel loans $1.0 million and greater, all non-pass grade exposures greater than $500,000 and a comprehensive review of loans with a low pass risk grade known to be impacted by the COVID-19 pandemic.
Additionally throughout 2020 and into 2021 in response to the pandemic, we have continued to adjust our business practices, including restricting employee travel, encouraging employees to work from home where possible, offering, until recently, drive-thru only service at certain of our locations with specific needs facilitated by appointment, implementing social distancing guidelines within our offices and continuing to hold regular meetings of our pandemic response team. Many of these measures remain in place due to the continued prevalence of the virus, though, in April 2021, we began re-opening our customer locations and bringing employees back into the office with a phased approach.
On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security ("CARES") Act was signed into law. It contains substantial tax and spending provisions intended to address the impact of the COVID-19 pandemic. The CARES Act included the Paycheck Protection Program ("PPP"), a program designed to aid small- and medium-sized businesses, sole proprietors and other self-employed persons through federally guaranteed loans distributed through banks. These loans were intended to guarantee eight to 24 weeks of payroll and other costs to provide support to participating businesses and increase the ability of these businesses to retain workers. In addition, these loans are fully guaranteed by the SBA, carry a term of two or five years, dependent on the date originated, and a 1.0% annualized interest rate. On December 27, 2020, the Coronavirus Response and Relief Supplemental Appropriations Act ("Coronavirus Relief Act") was signed into law. It contains significant additional relief programs, including the authorization of a second round of PPP. As of March 31, 2021, under the PPP, we had submitted applications and received funding of approximately $3.3 billion, of which, approximately $1.0 billion had received forgiveness as of that date. We believe that we were effective in each round of the PPP in assisting the small businesses in our markets that continue to be impacted by the pandemic. Inclusive of fees from the SBA, our yield on PPP loans during the first quarter of 2021 was 4.51%.
As a result of the pandemic, we also implemented a short-term loan modification program to provide temporary payment relief to certain of our borrowers. This program allowed for a deferral of principal and/or interest payments for 90 days, which may have been extended for an additional 90 days, for a maximum of 180 days on a cumulative and successive basis. For borrowers requiring a longer-term modification following the short-term loan modification program, we worked with eligible borrowers to modify such loans under Section 4013 of the CARES Act. The outstanding balance at March 31, 2021 of loans which have received these Section 4013 modifications was approximately $835.1 million compared to approximately $825.6 million at December 31, 2020.
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We believe our response to the pandemic has allowed and continues to allow us to appropriately support our associates and clients and their communities. The COVID-19 pandemic along with the implementation of CECL contributed to an increased provision for credit losses in 2020 and an extended duration of economic disruption resulting from the virus could lead to increased net charge-offs and continued elevated levels of provisioning expense. We continue to monitor the impact of COVID-19, the administration, efficacy and public acceptance of COVID-19 vaccines, the effects of the CARES Act, Coronavirus Relief Act, American Relief Act and the prospects for additional fiscal stimulus programs closely; COVID-19 continues to spread throughout the United States, and cases, hospitalizations and deaths in some of our markets remain elevated and recently new variants or mutations of the virus have begun to emerge that in some cases appear to be more contagious than the original virus. Accordingly, the COVID-19 pandemic continues to impact our operations and the operations of certain of our customers, though in the first quarter of 2021 the impact appears to be lessening as the average number of cases, hospitalizations and deaths in most of our markets have started to decline and the number of residents in our markets that have been vaccinated against the virus continues to rise; however, our ability and the ability of our customers to recover from the pandemic remains uncertain and will depend on continued reductions in the number and severity of COVID-19 cases in our markets and improvement in economic conditions in our markets, including as a result of continued government support of those individuals and businesses most adversely impacted by the virus.
Overview
Our diluted net income per common share for the three months ended March 31, 2021 was $1.61, compared to $0.37 for the same period in 2020. At March 31, 2021, reflecting the significant number of loans we had originated under the PPP, loans had increased to $23.1 billion, as compared to $22.4 billion at December 31, 2020, and total deposits increased to $28.3 billion at March 31, 2021 from $27.7 billion at December 31, 2020.
Results of Operations. Our net interest income increased to $222.9 million for the three months ended March 31, 2021 compared to $193.6 million for the same period in the prior year, representing an increase of $29.3 million. For the three months ended March 31, 2021 when compared to the comparable period in 2020, this increase was largely the result of lower cost of funds, the impact of both interest and fees related to PPP loans and our pay down of a portion of the additional liquidity we acquired in 2020 in response to the economic uncertainty resulting from the COVID-19 pandemic, as well as organic loan growth during the comparable periods. The net interest margin (the ratio of net interest income to average earning assets) for the three months ended March 31, 2021 was 3.02% compared to 3.28% for the same period in 2020 and reflects the impact of loans made pursuant to the PPP and our acquisition and subsequent pay down of additional on-balance sheet liquidity as noted above, the decline in short-term interest rates, declining levels of positive impact from purchase accounting and the competitive rate environments for loans and deposits in our markets.
Our provision for credit losses was $7.2 million for the three months ended March 31, 2021 compared to $99.9 million for the same period in 2020. The higher level of provision expense during the three months ended March 31, 2020 was largely the result of the anticipated economic impact of the COVID-19 pandemic. The decrease in the first quarter of 2021 as compared to the first quarter of 2020 is primarily due to anticipated improvements in economic conditions. Also contributing to the provision expense in the first quarter of 2020 and 2021 was an increase in net charge-offs, which totaled $11.4 million for the three months ended March 31, 2021 compared to $10.2 million for the same period in 2020.
At March 31, 2021, our allowance for credit losses as a percentage of total loans, inclusive of PPP loans, was 1.22% compared to 1.27% at December 31, 2020. The decrease in the allowance for credit losses is largely the result of improvements in the macroeconomic forecasts utilized by our CECL models to estimate future credit losses.
Noninterest income increased by $22.3 million, or 31.7%, during the three months ended March 31, 2021 compared to the same period in 2020. The growth in noninterest income was in large part attributable to an increase in income from our equity method investment in BHG of $13.4 million, or 85.7%, during the three months ended March 31, 2021 compared to the same period in the prior year as well as gains on mortgage loans sold, net, which increased by $5.1 million for the three months ended March 31, 2021 as compared to the same period in the prior year primarily due to the favorable interest rate environment and housing markets in our markets as well as our increased number of mortgage originators in the respective periods. These increases were offset in part by a decline in wealth management revenues of $16.1 million for the three months ended March 31, 2021 compared to $16.6 million in the same period in the prior year as well as the recording of net gains on sales of securities during the three months ended March 31, 2020 of $463,000 with no gains being recorded during the same period in 2021. Other noninterest income, which is the result of fee revenue lines of business other than those noted above, increased during the three months ended March 31, 2021 by $5.6 million when compared to the same period in the prior year largely as a result of gains on other equity investments.
Noninterest expense increased by $17.3 million, or 12.6%, during the three months ended March 31, 2021 compared to the three months ended March 31, 2020. Impacting noninterest expense for the three months ended March 31, 2021 as compared to the same prior year period was a $22.2 million increase in salaries and employee benefits. The change in salaries and employee benefits was the result of an increase in our associate base in the first quarter of 2021 versus the first quarter of 2020, annual merit increases as well as
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the accrual of both our cash and equity incentive plans at above-target payout during the three months ended March 31, 2021 versus an accrual at below-target payout under such plans during the same period in 2020. Also impacting noninterest expense in the first quarter of 2020 were lending related costs related to an increase in our off-balance sheet reserves. The higher level of expense related to off-balance sheet reserves is due to the effect that macroeconomic factors impacted by the COVID-19 pandemic had on our CECL models during the three months ended March 31, 2020 subsequent to the implementation of CECL effective January 1, 2020. No such additional expense was booked in the first quarter of 2021.
Our efficiency ratio (the ratio of noninterest expense to the sum of net interest income and noninterest income) was 49.0% for the three months ended March 31, 2021 compared to 52.0% for the same period in 2020. The efficiency ratio measures the amount of expense that is incurred to generate a dollar of revenue.
During the three months ended March 31, 2021, we recorded income tax expense of $28.2 million compared to an income tax benefit of $1.7 million for the three months ended March 31, 2020. Our effective tax rate for the three months ended March 31, 2021 was 18.4% compared to a benefit of 6.2% for the three months ended March 31, 2020. Our tax expense in the first three months of 2020 was impacted by the increased provision for credit losses we recorded during that quarter as discussed above, a portion of which was recorded as a discrete item of total income tax in the first quarter of 2020 and contributed a tax benefit of $22.4 million. Our tax rate in each period was also impacted by the vesting and exercise of equity-based awards previously granted under our equity-based compensation program, resulting in the recognition of tax benefits of $1.6 million for the three months ended March 31, 2021 compared to tax benefits of $862,000 for the three months ended March 31, 2020.
Financial Condition. Net loans increased $662.2 million, or 3.0%, during the three months ended March 31, 2021, when compared to December 31, 2020. Contributing to increased loan volumes during the three months ended March 31, 2021, were approximately $424.5 million of loans issued through the SBA's PPP, net of forgiveness. The remainder of the increase is primarily the result of loans made to borrowers that principally operate or are located in our core markets, increases in the number of relationship advisors we employ and continued focus on attracting new customers to our company. Total deposits were $28.3 billion at March 31, 2021, compared to $27.7 billion at December 31, 2020, an increase of $587.4 million, or 2.1%. Deposit growth during the period was likely aided by our clients' continued desire to build liquidity to support their businesses through the COVID-19 pandemic, proceeds from the PPP and other government stimulus programs and current stock market conditions, but was also due in part to our intentional emphasis on gathering low-cost core deposits during both periods.
Capital and Liquidity. At March 31, 2021 and December 31, 2020, our capital ratios, including our bank's capital ratios, exceeded regulatory minimum capital requirements and those necessary to be considered well-capitalized under applicable federal regulations. See Note 10. Regulatory Matters in the Notes to our Consolidated Financial Statements elsewhere in this Form 10-Q for additional information regarding our capital ratios. From time to time we may be required to support the capital needs of our bank (Pinnacle Bank). At March 31, 2021, we had approximately $296.8 million of cash at the parent company that could be used to support our bank.
During the second quarter of 2020, we issued 9.0 million depositary shares, each representing a 1/40th interest in a share of our 6.75% fixed rate non-cumulative, perpetual preferred stock, Series B (Series B Preferred Stock) in a registered public offering to both retail and institutional investors. Net proceeds from the transaction after underwriting discounts and offering expenses payable by us were approximately $217.1 million. The net proceeds were retained at Pinnacle Financial and the remaining portion thereof is available to support our capital needs and other obligations, including payments related to our outstanding indebtedness, to support the capital needs and other obligations of our bank and for other general corporate purposes. Additionally, we believe we have various capital raising techniques available to us to provide for the capital needs of our company and bank, such as a subordinated debt offering or entering into a new revolving credit facility with another financial institution. We also periodically evaluate capital markets conditions to identify opportunities to access those markets if necessary or prudent to support our capital levels.
During the quarter ended March 31, 2020, we repurchased approximately 1.0 million shares of our common stock at an aggregate cost of $50.8 million under our previously authorized share repurchase agreement. Our last purchase of shares of our common stock under the prior share repurchase program occurred on March 19, 2020, as we suspended the program due to uncertainty surrounding the COVID-19 pandemic and it remained suspended until its expiration on December 31, 2020. On January 19, 2021, our board of directors authorized a share repurchase program for up to $125.0 million of our outstanding common stock. The authorization for this program will remain in effect through March 31, 2022. We did not repurchase any shares under our current share repurchase program during the three months ended March 31, 2021.
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Critical Accounting Estimates
The accounting principles we follow and our methods of applying these principles conform with U.S. GAAP and with general practices within the banking industry. On January 1, 2020, we adopted FASB ASU 2016-13 Financial Instruments - Credit Losses (Topic 326) which significantly changes our methodology for determining our allowance for credit losses, and ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment which simplifies our process for performing goodwill impairment testing. There have been no other significant changes to our Critical Accounting Estimates as described in our Form 10-K.
Selected Financial Information
The following is a summary of certain financial information for the three month periods ended March 31, 2021 and 2020 and as of March 31, 2021 and December 31, 2020 (dollars in thousands, except per share data):

| Three Months Ended March 31, | 2021 - 2020 Percent |  |
| 2021 | 2020 | Increase (Decrease) |  |  |
Income Statement: |  |  |  |  |  |
Interest income | $ | 251,917 |  | $ | 263,069 |  | (4.2) | % |  |  |
Interest expense | 29,047 |  | 69,517 |  | (58.2) | % |  |  |
Net interest income | 222,870 |  | 193,552 |  | 15.1 | % |  |  |
Provision for credit losses | 7,235 |  | 99,889 |  | (92.8) | % |  |  |
Net interest income after provision for credit losses | 215,635 |  | 93,663 |  | > 100% |  |  |
Noninterest income | 92,709 |  | 70,377 |  | 31.7 | % |  |  |
Noninterest expense | 154,696 |  | 137,349 |  | 12.6 | % |  |  |
Net income before income taxes | 153,648 |  | 26,691 |  | > 100% |  |  |
Income tax expense (benefit) | 28,220 |  | (1,665) |  | > 100% |  |  |
Net income | 125,428 |  | 28,356 |  | > 100% |  |  |
Preferred stock dividends | (3,798) |  | — |  | 100 | % |  |  |
Net income available to common shareholders | $ | 121,630 |  | $ | 28,356 |  | > 100% |  |  |
Per Share Data: |  |  |  |  |  |
Basic net income per common share | $ | 1.61 |  | $ | 0.37 |  | > 100% |  |  |
Diluted net income per common share | $ | 1.61 |  | $ | 0.37 |  | > 100% |  |  |
Performance Ratios: |  |  |  |  |  |
Return on average assets (1) | 1.42 | % | 0.40 | % | > 100% |  |  |
Return on average shareholders' equity (2) | 9.96 | % | 2.58 | % | > 100% |  |  |
Return on average common shareholders' equity (3) | 10.41 | % | 2.58 | % | > 100% |  |  |
| March 31, 2021 | December 31, 2020 |  |  |  |
Balance Sheet: |  |  |  |  |  |
Loans, net of allowance for credit losses | $ | 22,805,820 | $ | 22,139,451 | 3.0% |  |  |
Deposits | $ | 28,292,940 | $ | 27,705,575 | 2.1% |  |  |

(1) Return on average assets is the result of net income available to common shareholders for the reported period on an annualized basis, divided by average assets for the period.
(2) Return on average shareholders' equity is the result of net income available to common shareholders for the reported period on an annualized basis, divided by average stockholders' equity for the period.
(3) Return on average common shareholders' equity is the result of net income available to common shareholders for the reported period on an annualized basis, divided by average common shareholders' equity for the period.
Results of Operations
Net Interest Income. Net interest income represents the amount by which interest earned on various earning assets exceeds interest paid on deposits and other interest-bearing liabilities and is the most significant component of our revenues. Net interest income totaled $222.9 million for the three months ended March 31, 2021 compared to $193.6 million for the same period in the prior year, representing an increase of $29.3 million. For the three months ended March 31, 2021 when compared to the comparable period in
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2020, this increase was largely the result of lower cost of funds, the impact of both interest and fees related to the PPP and our pay down of a portion of the additional liquidity we acquired in 2020 in response to the economic uncertainty resulting from the COVID-19 pandemic as well as organic loan growth during the comparable periods offset in part by yield compression in our earning asset portfolio.
The following tables set forth the amount of our average balances, interest income or interest expense for each category of interest-earning assets and interest-bearing liabilities and the average interest rate for interest-earning assets and interest-bearing liabilities, net interest spread and net interest margin for the three months ended March 31, 2021 and 2020 (dollars in thousands):

| Three Months Ended March 31, 2021 | Three Months Ended March 31, 2020
| Average Balances | Interest | Rates/ Yields | Average Balances | Interest | Rates/ Yields
Interest-earning assets: |  |  |  |  |  |
Loans (1)(2) | $ | 22,848,086 |  | $ | 227,372 |  | 4.11 | % | $ | 20,009,288 |  | $ | 236,420 |  | 4.84 | %
Securities: |  |  |  |  |  |
Taxable | 2,271,325 |  | 7,728 |  | 1.38 | % | 1,924,629 |  | 10,268 |  | 2.15 | %
Tax-exempt (2) | 2,394,944 |  | 15,498 |  | 3.15 | % | 1,889,914 |  | 13,824 |  | 3.51 | %
Federal funds sold and other | 3,356,199 |  | 1,319 |  | 0.16 | % | 807,796 |  | 2,557 |  | 1.27 | %
Total interest-earning assets | 30,870,554 |  | $ | 251,917 |  | 3.41 | % | 24,631,627 |  | $ | 263,069 |  | 4.41 | %
Nonearning assets |  |  |  |  |  |
Intangible assets | 1,861,386 |  |  |  | 1,870,063 |  |  |
Other nonearning assets | 1,927,192 |  |  |  | 1,735,952 |  |  |
Total assets | $ | 34,659,132 |  |  |  | $ | 28,237,642 |  |  |
Interest-bearing liabilities: |  |  |  |  |  |
Interest-bearing deposits: |  |  |  |  |  |
Interest checking | 5,466,389 |  | 2,599 |  | 0.19 | % | 3,745,280 |  | 8,467 |  | 0.91 | %
Savings and money market | 11,321,344 |  | 6,713 |  | 0.24 | % | 8,097,549 |  | 20,435 |  | 1.01 | %
Time | 3,212,386 |  | 8,156 |  | 1.03 | % | 4,076,897 |  | 21,796 |  | 2.15 | %
Total interest-bearing deposits | 20,000,119 |  | 17,468 |  | 0.35 | % | 15,919,726 |  | 50,698 |  | 1.28 | %
Securities sold under agreements to repurchase | 143,586 |  | 72 |  | 0.20 | % | 141,192 |  | 115 |  | 0.33 | %
Federal Home Loan Bank advances | 934,662 |  | 4,494 |  | 1.95 | % | 2,029,888 |  | 10,407 |  | 2.06 | %
Subordinated debt and other borrowings | 673,662 |  | 7,013 |  | 4.22 | % | 673,415 |  | 8,297 |  | 4.96 | %
Total interest-bearing liabilities | 21,752,029 |  | 29,047 |  | 0.54 | % | 18,764,221 |  | 69,517 |  | 1.49 | %
Noninterest-bearing deposits | 7,620,665 |  | — |  | 0.00 | % | 4,759,729 |  | — |  | 0.00 | %
Total deposits and interest-bearing liabilities | 29,372,694 |  | $ | 29,047 |  | 0.40 | % | 23,523,950 |  | $ | 69,517 |  | 1.19 | %
Other liabilities | 332,782 |  |  |  | 296,537 |  |  |
Stockholders' equity | 4,953,656 |  |  |  | 4,417,155 |  |  |
Total liabilities and stockholders' equity | $ | 34,659,132 |  |  |  | $ | 28,237,642 |  |  |
Net interest income |  | $ | 222,870 |  |  |  | $ | 193,552 |  |
Net interest spread (3) |  |  | 2.86 | % |  |  | 2.92 | %
Net interest margin (4) |  |  | 3.02 | % |  |  | 3.28 | %

(1) Average balances of nonaccrual loans are included in the above amounts.
(2) Yields computed on tax-exempt instruments on a tax equivalent basis and include $7.3 million of taxable equivalent income for the three months ended March 31, 2021 compared to $7.0 million for the three months ended March 31, 2020. The tax-exempt benefit has been reduced by the projected impact of tax-exempt income that will be disallowed pursuant to IRS Regulations as of and for the period presented.
(3) Yields realized on interest-bearing assets less the rates paid on interest-bearing liabilities. The net interest spread calculation excludes the impact of demand deposits. Had the impact of demand deposits been included, the net interest spread for the three months ended March 31, 2021 would have been 3.00% compared to a net interest spread of 3.22% for the three months ended March 31, 2020.
(4) Net interest margin is the result of annualized net interest income calculated on a tax-equivalent basis divided by average interest-earning assets for the period.
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For the three months ended March 31, 2021, our net interest margin was 3.02% compared to 3.28% for the same period in 2020. Our net interest margin for the three months ended March 31, 2021 reflects the impact of loans made pursuant to the PPP and our acquisition and subsequent pay down of additional on-balance sheet liquidity as noted above, the continued historically low levels for short-term interest rates, declining levels of positive impact from purchase accounting and the competitive rate environments for loans and deposits in our markets. More specifically, our net interest margin was negatively impacted by yield compression in our earning asset portfolio due to a declining macroeconomic interest rate environment, which included a 150 basis points reduction in the federal funds rate in March 2020. During the three months ended March 31, 2021, our earning asset yield decreased by 100 basis points from the same period in the prior year. Our total funding rates decreased by 79 basis points compared to the same period in the prior year.
We continue to deploy various asset liability management strategies to manage our risk to interest rate fluctuations. Pricing for creditworthy borrowers and meaningful depositors is very competitive in our markets and this competition has adversely impacted, and may continue to adversely impact, our margins. We believe this challenging competitive environment will continue throughout 2021, even during a time of economic uncertainty due to COVID-19. Our strategy of adding additional on-balance sheet liquidity to aid in managing through the early uncertainties of COVID-19, as well as the meaningful increase in core deposit inflows we experienced in 2020 and the first quarter of 2021 has and will continue to negatively impact the net interest margin until on-balance sheet liquidity returns to more normalized levels.
Provision for Credit Losses. The provision for credit losses represents a charge to earnings necessary to establish an allowance for credit losses that, in management's evaluation, is adequate to provide coverage for all expected credit losses. The provision for credit losses amounted to $7.2 million for the three months ended March 31, 2021 compared to $99.9 million for the three months ended March 31, 2020. Provision expense is impacted by growth in our loan portfolio, recent historical and projected future economic conditions, our internal assessment of the credit quality of the loan portfolio, and net charge-offs. The higher provision expense during the first quarter of 2020 as compared to the first quarter of 2021 was the result of the anticipated economic impact of the COVID-19 pandemic. In contrast to the deterioration in the economic outlook that occurred during the first quarter of 2020, projected economic conditions improved during the first quarter of 2021 resulting in the decrease in provision expense. Also contributing to provision expense in both periods are net charge-offs, which totaled $11.4 million for the three months ended March 31, 2021 compared to $10.2 million for the same period in 2020.
Noninterest Income. Our noninterest income is composed of several components, some of which vary significantly between quarterly and annual periods. Service charges on deposit accounts and other noninterest income generally reflect customer growth trends, while fees from our wealth management departments, gains on mortgage loans sold, gains and losses on the sale of securities and gains or losses related to our efforts to mitigate risks associated with interest rate volatility will often reflect financial market conditions and fluctuate from period to period.
The following is a summary of our noninterest income for the three months ended March 31, 2021 and 2020 (in thousands):

| Three Months Ended March 31, | 2021 - 2020 |  |  |
| 2021 | 2020 | Increase (Decrease) |  |  |  |
Noninterest income: |  |  |  |  |  |  |
Service charges on deposit accounts | $ | 8,307 |  | $ | 9,032 |  | (8.0)% |  |  |  |
Investment services | 8,191 |  | 9,239 |  | (11.3)% |  |  |  |
Insurance sales commissions | 3,225 |  | 3,240 |  | (0.5)% |  |  |  |
Gains on mortgage loans sold, net | 13,666 |  | 8,583 |  | 59.2% |  |  |  |
Investment gains on sales of securities, net | — |  | 463 |  | (100.0)% |  |  |  |
Trust fees | 4,687 |  | 4,170 |  | 12.4% |  |  |  |
Income from equity method investment | 28,950 |  | 15,592 |  | 85.7% |  |  |  |
Other noninterest income: |  |  |  |  |  |  |
Interchange and other consumer fees | 12,592 |  | 9,969 |  | 26.3% |  |  |  |
Bank-owned life insurance | 4,726 |  | 4,652 |  | 1.6% |  |  |  |
Loan swap fees | 903 |  | 2,187 |  | (58.7)% |  |  |  |
SBA loan sales | 1,855 |  | 1,341 |  | 38.3% |  |  |  |
Gains (losses) on other equity investments | 3,440 |  | (174) |  | > 100% |  |  |  |
Other noninterest income | 2,167 |  | 2,083 |  | 4.0% |  |  |  |
Total other noninterest income | 25,683 |  | 20,058 |  | 28.0% |  |  |  |
Total noninterest income | $ | 92,709 |  | $ | 70,377 |  | 31.7% |  |  |  |

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The decrease in service charges on deposit accounts in the three months ended March 31, 2021 compared to the three months ended March 31, 2020 relates to a decline in analysis fees, including fee waivers, due to the low transaction volumes in commercial checking accounts which we believe is related to the ongoing impact of the COVID-19 pandemic.
Income from our wealth management groups (investments, insurance and trust) is also included in noninterest income. For the three months ended March 31, 2021, commissions and fees from investment services at our financial advisory unit, Pinnacle Asset Management, a division of Pinnacle Bank, and fees from our wealth advisory group, PNFP Capital Markets, Inc., decreased by $1.0 million to $8.2 million when compared to the three months ended March 31, 2020. At March 31, 2021 and 2020, Pinnacle Asset Management was receiving commissions and fees in connection with approximately $6.0 billion and $4.0 billion, respectively, in brokerage assets. These fees increased $1.4 million during the three months ended March 31, 2021 when compared to the three months ended March 31, 2020 and were offset by a decline in investment advisory fees from PNFP Capital Markets, Inc. which decreased $2.4 million for the three months ended March 31, 2021 when compared to the three months ended March 31, 2020. Revenues from the sale of insurance products by our insurance subsidiaries for the three months ended March 31, 2021 decreased by $15,000 compared to the same period in the prior year. Included in insurance revenues for the three months ended March 31, 2021 was $918,000 of contingent income received in the first quarter of 2021 that was based on 2020 sales production and claims experience compared to $1.1 million recorded in the same period in the prior year. Additionally, at March 31, 2021, our trust department was receiving fees on approximately $3.4 billion of managed assets compared to $2.7 billion at March 31, 2020, reflecting organic growth and increased market valuations. We believe the change in our wealth management businesses during the three months ended March 31, 2021 when compared to the comparable period in 2020 is primarily attributable to market volatility resulting from the uncertainty surrounding the COVID-19 pandemic and its ongoing impact.
Gains on mortgage loans sold, net, consists of fees from the origination and sale of mortgage loans. These mortgage fees are for loans primarily originated in our current markets that are subsequently sold to third-party investors. Substantially all of these loan sales transfer servicing rights to the buyer. Generally, mortgage origination fees increase in lower interest rate environments and more robust housing markets and decrease in rising interest rate environments and more challenging housing markets. Mortgage origination fees will fluctuate from quarter to quarter as the rate environment changes. Gains on mortgage loans sold, net, were $13.7 million, for the three months ended March 31, 2021 compared to $8.6 million for the same period in the prior year. This sizeable increase is the direct result of the current interest rate environment and the strong markets in which we operate. We hedge a portion of our mortgage pipeline as part of a mandatory delivery program. The hedge is not designated as a hedge for GAAP purposes and, as such, changes in its fair value are recorded directly through the income statement. There is a positive correlation between the dollar amount of the mortgage pipeline and the value of this hedge. Therefore, the change in the outstanding mortgage pipeline at the end of any reporting period will directly impact the amount of gain recorded for mortgage loans held for sale during that reporting period. At March 31, 2021, the mortgage pipeline included $264.3 million in loans expected to close in 2021 compared to $288.6 million in loans at March 31, 2020 expected to close in 2020.
Investment gains and losses on sales, net represent the net gains and losses on sales of investment securities in our available-for-sale securities portfolio during the periods noted. During the three months ended March 31, 2021, no securities were sold for gains or losses compared to the three months ended March 31, 2020, when we sold approximately $30.2 million of securities for a net gain of $463,000.
Income from equity-method investment. Income from equity-method investment is comprised solely of income from our 49% equity-method investment in BHG. BHG is engaged in the origination of commercial and consumer loans primarily to healthcare providers and other professionals throughout the United States. The loans originated by BHG are either financed by secured borrowings or sold without recourse to independent financial institutions and investors. BHG has expanded its operations to include commercial lending to other professional service firms such as attorneys, accountants and others.
Income from this equity-method investment was $29.0 million for the three months ended March 31, 2021 compared to $15.6 million for the same period last year. Historically, BHG has sold the majority of the loans its originates to a network of bank purchasers through a combination of online auctions, direct sales and its direct purchase option. In the second half of 2019, BHG began retaining more loans on its balance sheet than historically had been the case in recent years. As a result of the economic disruption resulting from the COVID-19 pandemic, BHG, throughout 2020 and through the first quarter of 2021, sold more loans through its auction platform than we had previously anticipated and will likely continue to slow its transition to holding more loans on its balance sheet as the effects of COVID-19 are monitored. In the third quarter of 2020, BHG completed its first securitization of approximately $160 million in notes backed by commercial and consumer loans on its balance sheet to provide additional funding.
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Income from equity-method investment is recorded net of amortization expense associated with customer lists and other intangible assets of $188,000 for the three months ended March 31, 2021 compared to $293,000 for the three months ended March 31, 2020. At March 31, 2021, there wer e $7.4 million of th ese intangible assets that are expected to be amortized in lesser amounts over the next 14 years. Also included in income from equity-method investment is accretion income associated with the fair valuation of certain of BHG's liabilities of $452,000 for the three months ended March 31, 2021, compared to $564,000 for the three months ended March 31, 2020. At March 31, 2021, there were $2.2 million of these liabilities that are expected to accrete into income in lesser amounts over the next five years.
During the three months ended March 31, 2021, Pinnacle Financial and Pinnacle Bank received $10.0 million in dividends from BHG in the aggregate. During the three months ended March 31, 2020, Pinnacle Financial and Pinnacle Bank received dividends of $8.0 million in the aggregate. Dividends from BHG during such periods reduced the carrying amount of our investment in BHG, while earnings from BHG during such periods increased the carrying amount of our investment in BHG. Profits from intercompany transactions are eliminated. Our proportionate share of earnings from BHG is included in our consolidated tax return. During the three months ended March 31, 2021, Pinnacle Bank purchased $74.6 million in loans from BHG at par pursuant to BHG's joint venture loan program whereby BHG and Pinnacle share proportionately in the credit risk of the acquired loans based on the rate on the loan and the rate of the purchase. The yield on this portfolio to Pinnacle Bank is anticipated to be 4.75% per annum. No loans were purchased from BHG by Pinnacle Bank for the three months ended March 31, 2020.
For the three months ended March 31, 2021, BHG reported $157.6 million in revenues, net of substitution losses of $28.6 million, compared to revenues of $97.9 million for the three months ended March 31, 2020, net of substitution losses of $16.3 million. Earnings from BHG are likely to fluctuate from period-to-period. Approximately $116.0 million of BHG's revenues for the three months ended March 31, 2021 related to gains on the sale of commercial loans compared to $69.7 million for the three months ended March 31, 2020. These loans have typically been sold by BHG with no recourse to a network of community banks and other financial institutions at a premium to the par value of the loan. The purchaser may access a BHG cash reserve account of up to 3% of the loan balance to support loan payments. BHG retains no servicing or other responsibilities related to the core product loan once sold. As a result, this gain on sale premium represents BHG's compensation for absorbing the costs to originate the loan as well as marketing expenses associated with maintaining its business model. At March 31, 2021 and 2020, there were $3.9 billion and $2.8 billion, respectively, of these loans previously sold by BHG that were being actively serviced by BHG's network of bank purchasers. BHG, at its sole option, may also provide purchasers of these loans the ability to substitute the acquired loan with another more recently-issued BHG loan should the previously-acquired loan become at least 90-days past due as to its monthly payments. As a result, BHG maintained a liability as of March 31, 2021 and 2020 of $296.0 million and $179.0 million, respectively, that represents an estimate of the future inherent losses for the outstanding core portfolio that may be subject to future substitution due to payment default or loan prepayment. This liability represents 7.6% and 6.4%, respectively, of core product loans previously sold by BHG that remain outstanding as of March 31, 2021 and 2020, respectively. The increase in this liability in the three months ended March 31, 2021 compared to the period ended March 31, 2020 was principally the result of the economic disruption associated with the COVID-19 pandemic which adversely impacted physician and dental practices in a material manner.
In addition to these loans that BHG sells into its auction market, at March 31, 2021, BHG reported loans that remained on BHG's balance sheet totaling $1.3 billion compared to $735.2 million as of March 31, 2020. A portion of these loans do not qualify for sale accounting and accordingly an offsetting secured borrowing liability has been recorded. At March 31, 2021 and 2020, BHG had $785.6 million and $361.8 million, respectively, of secured borrowings associated with loans held for investment which did not qualify for sale accounting. At March 31, 2021 and 2020, BHG reported allowance for loan losses totaling $24.7 million and $9.2 million, respectively. Interest income and fees amounted to $34.6 million for the three months ended March 31, 2021 compared to $24.2 million for the three months ended March 31, 2020.
Included in our other noninterest income are interchange and other consumer fees, gains from bank-owned life insurance, swap fees earned for the facilitation of derivative transactions for our clients, SBA loan sales, gains or losses on other equity investments and other noninterest income items. Interchange revenues increased during the three months ended March 31, 2021 as compared to the same period in 2020 due to increased debit and credit card transactions period-over-period and unused line fees during the first quarter of 2021 as compared to the same period in 2020. Other noninterest income included changes in the cash surrender value of bank-owned life insurance which was $4.7 million for each of the three months ended March 31, 2021 and 2020. The assets that support these policies are administered by the life insurance carriers and the income we recognize (i.e., increases or decreases in the cash surrender value of the policies) on these policies is dependent upon the crediting rates applied by the insurance carriers, which are subject to change at the discretion of the carriers, subject to any applicable floors. Earnings on these policies generally are not taxable. Loan swap fees decreased by $1.3 million during the three months ended March 31, 2021 as compared to the same period in 2020 due primarily to a change in the volume of activity resulting from the current interest rate environment. SBA loan sales are also included in other noninterest income and fluctuate based on the current market environment. Additionally, the carrying values of other equity investments are adjusted either upwards or downwards from the transaction price to reflect expected exit values as evidenced by financing and sale transactions with third parties, or when determination of a valuation adjustment is confirmed through ongoing
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reviews by senior investment managers. Income related to these investments increased $3.6 million during the three months ended March 31, 2021 when compared to the same period in the prior year. The other components of other noninterest income increased only slightly during the three months ended March 31, 2021 as compared to the same period in 2020 and includes all other noninterest income not included in the above noted categories.
Noninterest Expense. Noninterest expense consists of salaries and employee benefits, equipment and occupancy expenses, other real estate expenses, and other operating expenses. The following is a summary of our noninterest expense for the three months ended March 31, 2021 and 2020 (in thousands):

| Three Months Ended March 31, | 2021 - 2020 |  |  |  |
| 2021 | 2020 | Increase (Decrease) |  |  |  |  |  |
Noninterest expense: |  |  |  |  |  |  |  |  |
Salaries and employee benefits: |  |  |  |  |  |  |  |  |
Salaries | $ | 57,589 |  | $ | 52,176 |  | 10.4% |  |  |  |  |  |
Commissions | 4,723 |  | 3,983 |  | 18.6% |  |  |  |  |  |
Cash and equity incentives | 23,642 |  | 10,280 |  | 130.0% |  |  |  |  |  |
Employee benefits and other | 16,774 |  | 14,041 |  | 19.5% |  |  |  |  |  |
Total salaries and employee benefits | 102,728 |  | 80,480 |  | 27.6% |  |  |  |  |  |
Equipment and occupancy | 23,220 |  | 20,978 |  | 10.7% |  |  |  |  |  |
Other real estate expense, net | (13) |  | 2,415 |  | (100.5%) |  |  |  |  |  |
Marketing and other business development | 2,349 |  | 3,251 |  | (27.7%) |  |  |  |  |  |
Postage and supplies | 1,806 |  | 1,990 |  | (9.2%) |  |  |  |  |  |
Amortization of intangibles | 2,206 |  | 2,520 |  | (12.5%) |  |  |  |  |  |
Other noninterest expense: |  |  |  |  |  |  |  |  |
Deposit related expense | 6,804 |  | 5,238 |  | 29.9% |  |  |  |  |  |
Lending related expense | 7,782 |  | 12,068 |  | (35.5%) |  |  |  |  |  |
Wealth management related expense | 435 |  | 558 |  | (22.0%) |  |  |  |  |  |
Other noninterest expense | 7,379 |  | 7,851 |  | (6.0%) |  |  |  |  |  |
Total other noninterest expense | 22,400 |  | 25,715 |  | (12.9%) |  |  |  |  |  |
Total noninterest expense | $ | 154,696 |  | $ | 137,349 |  | 12.6% |  |  |  |  |  |

Total salaries and employee benefits expenses increased $22.2 million for the three months ended March 31, 2021 compared to the same period in 2020. The change in salaries and employee benefits was the result of an increase in our associate base in 2021 versus 2020, annual merit raises as well as the accrual of our cash incentive plan at above-target payout during the three months ended March 31, 2021 compared to an accrual at below-target payout due to the effects of COVID-19 on our anticipated earnings and performance during the three months ended March 31, 2020. At March 31, 2021, our associate base was 2,621.0 full-time equivalent associates as compared to 2,562.0 at March 31, 2020. We expect salary and benefit expenses will rise in 2021 compared to 2020 as we continue our focus on hiring experienced bankers in all of our markets, particularly if we continue to accrue cash and equity incentives at above-target payout based on anticipated earnings and performance in 2021.
We believe that cash and equity incentives are a valuable tool in motivating an associate base that is focused on providing our clients effective financial advice and increasing shareholder value. As a result, and unlike many other financial institutions, all of our bank's non-commissioned associates participate in our annual cash incentive plan with a minimum targeted bonus equal to 10% of each associate's annual salary, and all of our bank's associates participate in our equity compensation plans. Under the 2021 annual cash incentive plan, the targeted level of incentive payments requires achievement of a certain soundness threshold and a targeted level of quarterly pre-tax, pre-provision net revenue (PPNR) and annual earnings per share (subject to certain adjustments). To the extent that the soundness threshold is met and PPNR and earnings per share are above or below the targeted amount, the aggregate incentive payments are increased or decreased. Historically, we have paid between 0% and 125% of our targeted incentives. For 2021, maximum payouts under the plan could reach 160% of target. Through the first quarter of 2021, we have accrued incentive costs for the cash incentive plan in 2021 at greater than 100% of our targeted awards.
Also included in employee benefits and other expense for the three months ended March 31, 2021 were approximately $5.4 million of compensation expenses related to equity-based awards for restricted shares, restricted stock unit and performance stock unit awards, compared to $5.5 million for the three months ended March 31, 2020. Under our equity incentive plans, we provide a broad-based equity incentive program for all of our bank's associates. We believe that equity incentives provide a vehicle for all associates to
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become meaningful shareholders of Pinnacle Financial over an extended period of time and create a shareholder-centric culture throughout our organization. Our compensation expense associated with equity awards for the three months ended March 31, 2021 changed only modestly when compared to the three months ended March 31, 2020. Our compensation expense associated with equity awards with time-based vesting criteria is likely to continue to increase during the remainder of 2021 when compared to 2020 as a result of the increased number of associates and our intention to hire additional experienced financial advisors. Compensation expense associated with our performance-based vesting awards will continue to be impacted by our performance in 2021 and will likely be higher than the comparable prior year period during the remainder of 2021 as beginning in the second quarter of 2020 and for the remainder of the year we accrued for those awards at below-target levels.
Employee benefits and other expenses were $16.8 million for the three months ended March 31, 2021 compared to $14.0 million for the three months ended March 31, 2020 and include costs associated with our 401k plan, health insurance and payroll taxes. These costs fluctuate based on changes in our associate base and the level of participation in these programs by our associates. Costs associated with our health insurance and 401k plan programs increased $2.0 million in the aggregate during the three months ended March 31, 2021 when compared to the same period in 2020.
Equipment and occupancy expenses for the three months ended March 31, 2021 were $23.2 million compared to $21.0 million for the three months ended March 31, 2020. These costs were generally consistent between periods though we expect to incur additional costs in future periods as we continue to enhance both our current locations and our technology infrastructure. During the first quarter of 2021, a single new office location was opened in the North Carolina market.
Other real estate income and expenses, net, for the three months ended March 31, 2021 were benefits of $13,000 as compared to expenses of $2.4 million for the same period in the prior year. Included in the quarter ended March 31, 2020 were writedowns of previously foreclosed upon properties to market value based on updated appraisals obtained during that same time period.
Marketing and business development expense for the three months ended March 31, 2021 was $2.3 million compared to $3.3 million for the three months ended March 31, 2020. The primary source of the decrease for the three months ended March 31, 2021 as compared to the same period in 2020 continues to be the result of limited in-person client meetings and business development expenses as a result of the restrictions resulting from the COVID-19 pandemic.
Intangible amortization expense was $2.2 million for the three months ended March 31, 2021 compared to $2.5 million for the same period in 2020. The following table outlines our amortizing intangible assets, their initial valuation and amortizable lives at March 31, 2021:

| Year acquired |  | Initial Valuation (in millions) |  | Amortizable Life (in years) |  | Remaining Value (in millions)
Core Deposit Intangible: |  |  |  |  |  |  |
CapitalMark | 2015 |  | $ | 6.2 |  |  | 7 |  |  | $ | 0.2 |
Magna Bank | 2015 |  | 3.2 |  |  | 6 |  |  | 0.1 |
Avenue | 2016 |  | 8.8 |  |  | 9 |  |  | 2.0 |
BNC | 2017 |  | 48.1 |  |  | 10 |  |  | 24.1 |
Book of Business Intangible: |  |  |  |  |  |  |
Miller Loughry Beach Insurance | 2008 |  | $ | 1.3 |  |  | 20 |  |  | $ | 0.2 |
CapitalMark | 2015 |  | 0.3 |  |  | 16 |  |  | 0.1 |
BNC Insurance | 2017 |  | 0.4 |  |  | 20 |  |  | 0.3 |
BNC Trust | 2017 |  | 1.9 |  |  | 10 |  |  | 1.2 |
Advocate Capital | 2019 |  | 13.6 |  |  | 13 |  |  | 9.8 |

These assets are being amortized on an accelerated basis which reflects the anticipated life of the underlying assets. Amortization expense of these intangibles is estimated to decrease from $8.1 million to $4.7 million per year over the next five years with lesser amounts for the remaining amortization period.
Other noninterest expenses, which consists primarily of deposit, lending, wealth management and administrative expenses decreased by $3.3 million for the three months ended March 31, 2021 when compared to the three months ended March 31, 2020. Deposit related expense increased by $1.6 million during the three months ended March 31, 2021 when compared to the same period in 2020 largely the result of increased FDIC assessment costs primarily due to the firm's increased asset base. Lending-related expenses decreased $4.3 million during the three months ended March 31, 2021 when compared to the same period in 2020. This decrease is primarily the result of the effect that macroeconomic factors impacted by the COVID-19 pandemic had on our CECL models during
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the three months ended March 31, 2020 following the implementation of CECL effective January 1, 2020. As a result of improving economic conditions, we did not build additional reserves during the three months ended March 31, 2021. Wealth management related expenses and other noninterest expenses each remained relatively flat for the three months ended March 31, 2021 when compared to the same period in 2020.
Our efficiency ratio (the ratio of noninterest expense to the sum of net interest income and noninterest income) was 49.0% for the three months ended March 31, 2021 compared to 52.0% for the same period in 2020. The efficiency ratio measures the amount of expense that is incurred to generate a dollar of revenue. The efficiency ratio for the three months ended March 31, 2021 compared to the same period in 2020 was impacted in part by increased noninterest expense during the period as a result increased salaries and employee benefits as a result of accrual of our cash and equity incentives at above target levels during the quarter, gains on mortgage loans sold and income from our equity method investment in BHG.
Income Taxes. During the three months ended March 31, 2021, we recorded income tax expense of $28.2 million compared to an income tax benefit of $1.7 million for the three months ended March 31, 2020. Our effective tax rate for the three months ended March 31, 2021 was 18.4% compared to a benefit of 6.2% for the three months ended March 31, 2020. Our effective tax rate differs from the combined federal and state income tax statutory rate in effect of 26.14% primarily due to our investments in bank-qualified municipal securities, tax benefits from our real estate investment trust subsidiary, participation in Tennessee's Community Investment Tax Credit (CITC) program, tax benefits associated with share-based compensation, bank-owned life insurance and our captive insurance subsidiary, offset in part by the limitation on deductibility of meals and entertainment expense, non-deductible FDIC insurance premiums and non-deductible executive compensation. Our tax expense in the three months ended March 31, 2020 was impacted by the provision expense recorded in response to the COVID-19 pandemic, which was recorded in the first quarter of 2020 as a discrete item of total income tax and contributed a tax benefit of $22.4 million. Our tax rate in each period was also impacted by the vesting and exercise of equity-based awards previously granted under our equity-based compensation program, resulting in the recognition of tax benefits of $1.6 million for the three months ended March 31, 2021 compared to tax benefits of $862,000 for the three months ended March 31, 2020.
Financial Condition
Our consolidated balance sheet at March 31, 2021 reflects an increase in total loans outstanding to $23.1 billion compared to $22.4 billion at December 31, 2020. Total deposits increased by $587.4 million between December 31, 2020 and March 31, 2021. Total assets were $35.3 billion at March 31, 2021 compared to $34.9 billion at December 31, 2020.
Loans. The composition of loans at March 31, 2021 and at December 31, 2020 and the percentage (%) of each classification to total loans are summarized as follows (in thousands):

| March 31, 2021 |  | December 31, 2020
| Amount |  | Percent |  | Amount |  | Percent
Commercial real estate: |  |  |  |  |  |  |
Owner-occupied | $ | 2,869,785 |  |  | 12.5 | % |  | $ | 2,802,227 |  |  | 12.5 | %
Non-owner occupied | 5,573,181 |  |  | 24.1 | % |  | 5,203,384 |  |  | 23.2 | %
Consumer real estate – mortgage | 3,086,916 |  |  | 13.4 | % |  | 3,099,172 |  |  | 13.8 | %
Construction and land development | 2,568,969 |  |  | 11.1 | % |  | 2,901,746 |  |  | 12.9 | %
Commercial and industrial | 8,576,528 |  |  | 37.1 | % |  | 8,038,457 |  |  | 35.9 | %
Consumer and other | 411,322 |  |  | 1.8 | % |  | 379,515 |  |  | 1.7 | %
Total loans | $ | 23,086,701 |  |  | 100.0 | % | 1 | $ | 22,424,501 |  |  | 100.0 | %

At March 31, 2021, our loan portfolio composition had changed modestly from the composition at December 31, 2020 principally as a result of the PPP loans, which are classified as commercial and industrial loans, though commercial real estate and commercial and industrial lending generally continue to make up the largest segments of our portfolio. At March 31, 2021, approximately 34.0% of the outstanding principal balance of our commercial real estate loans was secured by owner-occupied commercial real estate properties, compared to 35.0% at December 31, 2020. Owner-occupied commercial real estate is similar in many ways to our commercial and industrial lending in that these loans are generally made to businesses on the basis of the cash flows of the business rather than on the valuation of the real estate. Additionally, the construction and land development loan segment continues to be a meaningful portion of our portfolio and reflects the development and growth of the local communities in which we operate and is diversified between commercial, residential and land.
Banking regulations have established guidelines for the construction ratio of less than 100% of total risk-based capital and for the non-owner occupied ratio of less than 300% of total risk-based capital. Should a bank’s ratios be in excess of these guidelines, banking
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regulations generally require an increased level of monitoring in these lending areas by bank management. Both ratios are calculated by dividing certain types of loan balances for each of the two categories by Pinnacle Bank’s total risk-based capital. At March 31, 2021, Pinnacle Bank’s construction and land development loans as a percentage of total risk-based capital was 76.0% compared to 89.0% at December 31, 2020. Construction and land development, non-owner occupied commercial real estate and multifamily loans as a percentage of total risk-based capital were 256.0% and 264.0% as of March 31, 2021 and December 31, 2020, respectively. At March 31, 2021, Pinnacle Bank was within the 100% and 300% guidelines and has established what it believes to be appropriate controls to monitor its lending in these areas as it aims to keep the level of these loans to below the 100% and 300% thresholds.
The following table classifies our fixed and variable rate loans at March 31, 2021 according to contractual maturities of (1) one year or less, (2) after one year through five years, and (3) after five years. The table also classifies our variable rate loans pursuant to the contractual repricing dates of the underlying loans (in thousands):

| Amounts at March 31, 2021 |  | Percentage | Percentage
| Fixed Rates |  | Variable Rates |  | Totals |  | At March 31, 2021 | At December 31, 2020
Based on contractual maturity: |  |  |  |  |  |  |  |
Due within one year | $ | 3,017,043 |  |  | $ | 1,154,044 |  |  | $ | 4,171,087 |  |  | 18.1% | 18.6%
Due in one year to five years | 8,874,402 |  |  | 3,731,737 |  |  | 12,606,139 |  |  | 54.6% | 54.4%
Due after five years | 4,479,711 |  |  | 1,829,764 |  |  | 6,309,475 |  |  | 27.3% | 27.0%
Totals | $ | 16,371,156 |  |  | $ | 6,715,545 |  |  | $ | 23,086,701 |  |  | 100.0% | 100.0%
Based on contractual repricing dates: |  |  |  |  |  |  |  |
Daily floating rate | $ | — |  |  | $ | 850,633 |  |  | $ | 850,633 |  |  | 3.7% | 4.3%
Due within one year | 3,017,043 |  |  | 5,321,716 |  |  | 8,338,759 |  |  | 36.1% | 37.7%
Due in one year to five years | 8,874,402 |  |  | 252,929 |  |  | 9,127,331 |  |  | 39.5% | 37.7%
Due after five years | 4,479,711 |  |  | 290,267 |  |  | 4,769,978 |  |  | 20.7% | 20.3%
Totals | $ | 16,371,156 |  |  | $ | 6,715,545 |  |  | $ | 23,086,701 |  |  | 100.0% | 100.0%

The above information does not consider the impact of scheduled principal payments.
Loans in Past Due Status. The following table is a summary of our loans that were past due at least 30 days but less than 89 days and 90 days or more past due as of March 31, 2021 and December 31, 2020 (in thousands):

| March 31, |  | December 31,
Loans past due 30 to 89 days: | 2021 |  | 2020
Commercial real estate: |  |  |
Owner occupied | $ | 1,975 |  |  | $ | 3,606 |
Non-owner occupied | 1,714 |  |  | 6,946 |
Consumer real estate – mortgage | 6,093 |  |  | 9,187 |
Construction and land development | 137 |  |  | 696 |
Commercial and industrial | 13,808 |  |  | 26,079 |
Consumer and other | 1,020 |  |  | 1,088 |
Total loans past due 30 to 89 days | $ | 24,747 |  |  | $ | 47,602 |
Loans past due 90 days or more: |  |  |
Commercial real estate: |  |  |
Owner occupied | $ | 2,957 |  |  | $ | 1,860 |
Non-owner occupied | 2,526 |  |  | 3,861 |
Consumer real estate – mortgage | 5,816 |  |  | 6,274 |
Construction and land development | 383 |  |  | 736 |
Commercial and industrial | 4,377 |  |  | 4,408 |
Consumer and other | 342 |  |  | 304 |
Total loans past due 90 days or more | $ | 16,401 |  |  | $ | 17,443 |
Ratios: |  |  |
Loans past due 30 to 89 days as a percentage of total loans | 0.11 | % |  | 0.21 | %
Loans past due 90 days or more as a percentage of total loans | 0.07 | % |  | 0.08 | %
Total loans in past due status as a percentage of total loans | 0.18 | % |  | 0.29 | %

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Potential Problem Loans. Potential problem loans, which are not included in nonperforming assets, amounted to approximately $160.8 million, or 0.7% of total loans at March 31, 2021, compared to $173.5 million, or 0.8% of total loans at December 31, 2020. Potential problem loans represent those loans with a well-defined weakness and where information about possible credit problems of borrowers has caused management to have doubts about the borrower's ability to comply with present repayment terms. This definition is believed to be substantially consistent with the standards established by Pinnacle Bank's primary regulators, for loans classified as substandard, excluding the impact of substandard nonaccrual loans and substandard troubled debt restructurings. Troubled debt restructurings are not included in potential problem loans. Approximately $6.5 million of potential problem loans were past due at least 30 days but less than 90 days as of March 31, 2021.
Nonperforming Assets and Troubled Debt Restructurings. At March 31, 2021, we had $82.8 million in nonperforming assets compared to $86.2 million at December 31, 2020. Included in nonperforming assets were $72.1 million in nonaccrual loans and $10.7 million in OREO and other nonperforming assets at March 31, 2021 and $73.8 million in nonaccrual loans and $12.4 million in OREO and other nonperforming assets at December 31, 2020. At both March 31, 2021 and December 31, 2020, there were $2.5 million of troubled debt restructurings, all of which were accruing as of the restructured date and remain on accrual status.
In response to the COVID-19 pandemic and its economic impact to its customers, Pinnacle Bank implemented a short-term modification program in accordance with interagency regulatory guidance to provide temporary payment relief to those borrowers directly impacted by COVID-19 who were not more than 30 days past due at the time of modification. This program allows for a deferral of payments of principal and/or interest for 90 days, which Pinnacle Bank may extend for an additional 90 days, for a maximum of 180 days on a cumulative and successive basis. Pursuant to the interagency regulatory guidance, Pinnacle Financial may elect to not classify loans for which these deferrals were granted as TDRs.
In addition to the short-term modification program implemented by Pinnacle Bank, as discussed above, Section 4013 of the CARES Act and bank regulatory interagency guidance gave entities temporary relief from the accounting and disclosure requirements for TDRs indicating that a lender could conclude that the modifications are not a troubled debt restructuring if the borrower was less than 30 days past due as of December 31, 2019. We have followed the guidance under the CARES Act and the interagency guidance related to these loan modifications. At March 31, 2021, we had approximately $835.1 million in loans modified under Section 4013 of the CARES Act, compared to approximately $825.6 million at December 31, 2020.
Allowance for Credit Losses on Loans (allowance). On January 1, 2020, we adopted FASB ASU 2016-13, which introduced the current expected credit losses (CECL) methodology and required us to estimate all expected credit losses over the remaining life of our loan portfolio. Accordingly, the allowance for credit losses represents an amount that, in management's evaluation, is adequate to provide coverage for all expected future credit losses on outstanding loans. As of March 31, 2021 and December 31, 2020, our allowance for credit losses was approximately $280.9 million and $285.1 million, respectively, which our management believes to be adequate at each of the respective dates. Our allowance for credit losses as a percentage of total loans, inclusive of PPP loans, was 1.22% at March 31, 2021, down from 1.27% at December 31, 2020. No allowance for credit losses has been recorded for PPP loans as they are fully guaranteed by the SBA.
The decrease in the allowance for credit losses is largely the result of the improvements in the macroeconomic forecast. Our CECL models rely largely on recent historical and projected future macroeconomic conditions to estimate future credit losses. Macroeconomic factors used in the model include the national unemployment rate, gross domestic product, the commercial real estate price index and certain U.S. Treasury interest rates. Projections of these macroeconomic factors, obtained from an independent third party, are utilized to predict quarterly rates of default. These macroeconomic factors experienced significant deterioration during the first six months of 2020, resulting in a significant increase in our allowance for credit losses during the same period. Though these factors improved during the second half of 2020 and through the first quarter of 2021, should they deteriorate in future periods our modeling may require increased levels of provision expense over those recorded during the three months ended March 31, 2021.
Under the CECL methodology the allowance for credit losses is measured on a collective basis for pools of loans with similar risk characteristics, and for loans that do not share similar risk characteristics with the collectively evaluated pools, evaluations are performed on an individual basis. Losses are predicted over a period of time determined to be reasonable and supportable, and at the end of the reasonable and supportable period losses are reverted to long term historical averages. At March 31, 2021, reasonable and supportable periods of 18 months were utilized for all loan segments followed by a 12 month straight line reversion period to long term averages.
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The following table sets forth, based on management's estimate, the allocation of the allowance for credit losses to categories of loans as of March 31, 2021 and December 31, 2020 and the percentage of loans in each category to total loans (in thousands):

| March 31, 2021 |  | December 31, 2020
| Amount |  | Percent |  | Amount |  | Percent
Commercial real estate: |  |  |  |  |  |  |
Owner occupied | $ | 22,065 |  |  | 12.5 | % |  | $ | 23,298 |  |  | 12.5 | %
Non-owner occupied | 80,519 |  |  | 24.1 | % |  | 79,132 |  |  | 23.2 | %
Consumer real estate - mortgage | 30,199 |  |  | 13.4 | % |  | 33,304 |  |  | 13.8 | %
Construction and land development | 37,642 |  |  | 11.1 | % |  | 42,408 |  |  | 12.9 | %
Commercial and industrial | 101,076 |  |  | 37.1 | % |  | 98,423 |  |  | 35.9 | %
Consumer and other | 9,380 |  |  | 1.8 | % |  | 8,485 |  |  | 1.7 | %
Total allowance for credit losses on loans | $ | 280,881 |  |  | 100.0 | % |  | $ | 285,050 |  |  | 100.0 | %

The following is a summary of changes in the allowance for credit losses on loans for the three months ended March 31, 2021 and for the year ended December 31, 2020 and the ratio of the allowance for credit losses on loans to total loans as of the end of each period (in thousands):

| Three Months Ended March 31, 2021 |  | Year ended December 31, 2020
Balance at beginning of period | $ | 285,050 |  |  | $ | 94,777 |
Impact of adopting ASC 326 | — |  |  | 38,102 |
Provision for credit losses on loans | 7,228 |  |  | 191,542 |
Charged-off loans: |  |  |
Commercial real estate: |  |  |
Owner occupied | (697) |  |  | (2,598) |
Non-owner occupied | (140) |  |  | (546) |
Consumer real estate – mortgage | (371) |  |  | (3,478) |
Construction and land development | (367) |  |  | — |
Commercial and industrial | (11,749) |  |  | (38,718) |
Consumer and other loans | (950) |  |  | (3,993) |
Total charged-off loans | (14,274) |  |  | (49,333) |
Recoveries of previously charged-off loans: |  |  |
Commercial real estate: |  |  |
Owner occupied | 602 |  |  | 1,317 |
Non-owner occupied | 12 |  |  | 911 |
Consumer real estate – mortgage | 365 |  |  | 1,493 |
Construction and land development | 37 |  |  | 147 |
Commercial and industrial | 1,206 |  |  | 4,540 |
Consumer and other loans | 655 |  |  | 1,554 |
Total recoveries of previously charged-off loans | 2,877 |  |  | 9,962 |
Net charge-offs | (11,397) |  |  | (39,371) |
Balance at end of period | $ | 280,881 |  |  | $ | 285,050 |
Ratio of allowance for credit losses on loans to total loans outstanding at end of period | 1.22 | % |  | 1.27 | %
Ratio of net charge-offs to average total loans outstanding for the period (1) | 0.20 | % |  | 0.18 | %

(1) Net charge-offs for the year-to-date period ended March 31, 2021 have been annualized.
Pinnacle Financial's management assesses the adequacy of the allowance on a quarterly basis. This assessment includes procedures to estimate the allowance and test the adequacy and appropriateness of the resulting balance. The level of the allowance is based upon management's evaluation of historical default and loss experience, current and projected economic conditions, asset quality trends, known and inherent risks in the portfolio, adverse situations that may affect the borrowers' ability to repay the loan (including the timing of future payments), the estimated value of any underlying collateral, composition of the loan portfolio, industry and peer bank loan quality indications and other pertinent factors, including regulatory recommendations. The allowance is increased by provisions charged to expense and decreased by charge-offs, net of recoveries of amounts previously charged-off. Based upon our evaluation of the loan portfolio, we believe the allowance for credit losses to be adequate to absorb our estimate of expected future credit losses on loans outstanding at March 31, 2021. While our policies and procedures used to estimate the allowance for credit losses as well as the resultant provision for credit losses charged to operations are considered adequate by management, they are necessarily approximate
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and imprecise. There are factors beyond our control, such as conditions in the local and national economy, local real estate market or a particular industry or borrower which may negatively impact, materially, our asset quality and the adequacy of our allowance for credit losses and, thus, the resulting provision for credit losses. In particular, the length and severity of the economic disruption of the COVID-19 pandemic and the speed with which the economy will recover is difficult to predict and each may be worse than we have estimated, which could cause our provision for credit losses to be negatively impacted for the duration of the pandemic and its aftermath. We believe borrowers that operate in the restaurant, entertainment, hospitality and retail sectors, including owners of commercial real estate properties and hotels, continue to be the most likely to be negatively impacted by the economic disruptions related to the COVID-19 pandemic, though other borrowers have been, and are likely to continue to be, negatively impacted as well. If the strict social distancing practices or safer-at-home directives that were initially implemented in response to the spread of COVID-19 were to return, these impacts could be more severe than currently anticipated.
Investments. Our investment portfolio, consisting primarily of Federal agency bonds, mortgage-backed securities, and state and municipal securities amounted to $4.7 billion and $4.6 billion at March 31, 2021 and December 31, 2020, respectively. Our investment portfolio serves many purposes including serving as a stable source of income, as collateral for public funds deposits and as a potential liquidity source. A summary of our investment portfolio at March 31, 2021 and December 31, 2020 follows:

| March 31, 2021 |  | December 31, 2020
Weighted average life | 6.87 years |  | 6.51 years
Effective duration* | 4.79% |  | 4.35%
Tax equivalent yield | 2.29% |  | 2.28%

(*) The metric is presented net of fair value hedges tied to certain investment portfolio holdings. The effective duration of the investment portfolio without the fair value hedges as of March 31, 2021 and December 31, 2020 was 5.79% and 5.45%, respectively.
Restricted Cash. Our restricted cash balances totaled approximately $162.8 million at March 31, 2021, compared to $223.8 million at December 31, 2020. This restricted cash is maintained at other financial institutions as collateral primarily for our derivative portfolio. The decrease in restricted cash is attributable primarily to a decrease in collateral requirements on certain derivative instruments for which the fair value has increased. See Note 8. Derivative Instruments in the Notes to our Consolidated Financial Statements elsewhere in this Form 10-Q.
Securities Purchased with Agreement to Resell. During the three months ended March 31, 2021, we entered into a $450.0 million repurchase agreement transaction with a financial institution counterparty. This investment deploys some of our liquidity position into an instrument that improves the return on those funds in the current low rate environment. Additionally, we believe it positions us more favorably for a potential rising interest rate environment in the future.
Deposits and Other Borrowings. We had approximately $28.3 billion of deposits at March 31, 2021 compared to $27.7 billion at December 31, 2020. Our deposits consist of noninterest and interest-bearing demand accounts, savings accounts, money market accounts and time deposits. Additionally, we routinely enter into agreements with certain customers to sell certain securities under agreements to repurchase the security the following day. These agreements (which are typically associated with comprehensive treasury management programs for our clients and provide them with short-term returns for their excess funds) amounted to $172.1 million at March 31, 2021 and $128.2 million at December 31, 2020. Additionally, at March 31, 2021 and December 31, 2020, Pinnacle Bank had borrowed $888.1 million and $1.1 billion, respectively, in advances from the Federal Home Loan Bank of Cincinnati (FHLB). At March 31, 2021, Pinnacle Bank had approximately $2.9 billion in additional availability with the FHLB; however, incremental borrowings are subject to applicable collateral requirements and are made in a formal request by Pinnacle Bank and the subsequent approval by the FHLB.
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Generally, we have classified our funding base as either core funding or noncore funding as shown in the table below. The following table represents the balances of our deposits and other funding and the percentage of each type to the total at March 31, 2021 and December 31, 2020:

| March 31, 2021 |  | Percent |  | December 31, 2020 |  | Percent
Core funding: |  |  |  |  |  |  |
Noninterest-bearing deposit accounts | $ | 8,103,943 |  |  | 27.0% |  | $ | 7,392,325 |  |  | 25.0%
Interest-bearing demand accounts | 4,254,518 |  |  | 14.2% |  | 4,055,259 |  |  | 13.7%
Savings and money market accounts | 8,611,398 |  |  | 28.7% |  | 8,303,911 |  |  | 28.1%
Time deposit accounts less than $250,000 | 1,218,286 |  |  | 4.1% |  | 1,295,765 |  |  | 4.4%
Reciprocating demand deposit accounts (1) | 993,355 |  |  | 3.3% |  | 884,450 |  |  | 3.0%
Reciprocating savings accounts (1) | 1,565,030 |  |  | 5.2% |  | 1,358,154 |  |  | 4.6%
Reciprocating CD accounts (1) | 214,860 |  |  | 0.7% |  | 221,019 |  |  | 0.7%
Total core funding | 24,961,390 |  |  | 83.2% |  | 23,510,883 |  |  | 79.5%
Noncore funding: |  |  |  |  |  |  |
Relationship based noncore funding: |  |  |  |  |  |  |
Other time deposits | 701,697 |  |  | 2.3% |  | 722,609 |  |  | 2.4%
Securities sold under agreements to repurchase | 172,117 |  |  | 0.6% |  | 128,164 |  |  | 0.4%
Total relationship based noncore funding | 873,814 |  |  | 2.9% |  | 850,773 |  |  | 2.8%
Wholesale funding: |  |  |  |  |  |  |
Brokered deposits | 1,752,008 |  |  | 5.8% |  | 2,186,844 |  |  | 7.4%
Brokered time deposits | 877,845 |  |  | 2.9% |  | 1,285,239 |  |  | 4.3%
Federal Home Loan Bank advances | 888,115 |  |  | 3.0% |  | 1,087,927 |  |  | 3.7%
Paycheck Protection Program liquidity facility | — |  |  | —% |  | — |  |  | —%
Subordinated debt and other funding | 671,002 |  |  | 2.2% |  | 670,575 |  |  | 2.3%
Total wholesale funding | 4,188,970 |  |  | 13.9% |  | 5,230,585 |  |  | 17.7%
Total noncore funding | 5,062,784 |  |  | 16.8% |  | 6,081,358 |  |  | 20.5%
Totals | $ | 30,024,174 |  |  | 100.0% |  | $ | 29,592,241 |  |  | 100.0%

(1)The reciprocating categories consists of deposits we receive from a bank network (the Promontory network) in connection with deposits of our customers in excess of our FDIC coverage limit that we place with the Promontory network.
As noted in the table above, our core funding as a percentage of total funding increased from 79.5% at December 31, 2020 to 83.2% at March 31, 2021, primarily as a result of the significant increase in deposits estimated to have been funded, in part, by PPP loans and other government stimulus payments, and decreases in wholesale funding that was intentionally utilized to build on-balance sheet liquidity as we prepared for the initial impact of the COVID-19 pandemic. Competition for core deposits in our markets remains very competitive and we anticipate that our percentage of non-core funding is likely to increase as PPP loan funds and stimulus monies are utilized.
When wholesale funding is necessary to complement the company's core deposit base, management determines which source is best suited to address both liquidity risk management and interest rate risk management objectives. Our Asset Liability Management Policy imposes limitations on overall wholesale funding reliance and on brokered deposit exposure specifically. Both our overall reliance on wholesale funding and exposure to brokered deposits and brokered time deposits were within those policy limitations as of March 31, 2021.
Our funding policies impose limits on the amount of non-core funding we can utilize based on the non-core funding dependency ratio which is calculated pursuant to regulatory guidelines. Periodically, we may exceed our policy limitations, at which time management will develop plans to bring our funding sources back into compliance with our core funding ratios. At March 31, 2021 and December 31, 2020, we were in compliance with our core funding policies. Though growing our core deposit base is a key strategic objective of our firm and we experienced meaningful growth in core deposits in the first three months of 2021, we may increase our non-core funding amounts from current levels if we need to do so to fund growth or increase levels of on-balance sheet liquidity, but we do not currently anticipate that such increases will exceed the limits we have established in our internal policies for total levels of non-core funding.
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The amount of time deposits as of March 31, 2021 amounted to $3.0 billion. The following table shows our time deposits in denominations of less than $250,000 and in denominations of $250,000 and greater by category based on time remaining until maturity and the weighted average rate for each category as of March 31, 2021 (in thousands):

| Balances |  | Weighted Avg. Rate
Denominations less than $250,000 |  |  |
Three months or less | $ | 743,601 |  |  | 0.91 | %
Over three but less than six months | 462,093 |  |  | 0.83 | %
Over six but less than twelve months | 519,302 |  |  | 0.79 | %
Over twelve months | 586,600 |  |  | 0.87 | %
| $ | 2,311,596 |  |  | 0.86 | %
Denominations $250,000 and greater |  |  |
Three months or less | $ | 214,786 |  |  | 0.97 | %
Over three but less than six months | 191,609 |  |  | 0.91 | %
Over six but less than twelve months | 203,132 |  |  | 0.77 | %
Over twelve months | 91,565 |  |  | 1.11 | %
| $ | 701,092 |  |  | 0.91 | %
Totals | $ | 3,012,688 |  |  | 0.87 | %

Subordinated debt and other borrowings. We have established, or through acquisition acquired, twelve statutory business trusts which were established to issue 30-year trust preferred securities and certain other subordinated debt agreements. These securities qualify as Tier 2 capital subject to annual phase outs beginning five years from maturity. On April 22, 2020, we established a credit facility with the Federal Reserve Bank in conjunction with the PPP, with available borrowing capacity equal to the outstanding balance of PPP loans, which totaled approximately $2.2 billion at March 31, 2021. There are no amounts outstanding on this facility at March 31, 2021. These instruments are outlined below (in thousands):

Name |  | Date Established |  | Maturity |  | Total Debt Outstanding |  | Interest Rate at March 31, 2021 |  | Coupon Structure
Trust preferred securities |  |  |  |  |  |  |  |
Pinnacle Statutory Trust I |  | December 29, 2003 |  | December 30, 2033 |  | $ | 10,310 |  |  | 2.98 | % |  | 30-day LIBOR + 2.80%
Pinnacle Statutory Trust II |  | September 15, 2005 |  | September 30, 2035 |  | 20,619 |  |  | 1.60 | % |  | 30-day LIBOR + 1.40%
Pinnacle Statutory Trust III |  | September 7, 2006 |  | September 30, 2036 |  | 20,619 |  |  | 1.85 | % |  | 30-day LIBOR + 1.65%
Pinnacle Statutory Trust IV |  | October 31, 2007 |  | September 30, 2037 |  | 30,928 |  |  | 3.03 | % |  | 30-day LIBOR + 2.85%
BNC Capital Trust I |  | April 3, 2003 |  | April 15, 2033 |  | 5,155 |  |  | 3.49 | % |  | 30-day LIBOR + 3.25%
BNC Capital Trust II |  | March 11, 2004 |  | April 7, 2034 |  | 6,186 |  |  | 3.09 | % |  | 30-day LIBOR + 2.85%
BNC Capital Trust III |  | September 23, 2004 |  | September 23, 2034 |  | 5,155 |  |  | 2.64 | % |  | 30-day LIBOR + 2.40%
BNC Capital Trust IV |  | September 27, 2006 |  | December 31, 2036 |  | 7,217 |  |  | 1.90 | % |  | 30-day LIBOR + 1.70%
Valley Financial Trust I |  | June 26, 2003 |  | June 26, 2033 |  | 4,124 |  |  | 3.30 | % |  | 30-day LIBOR + 3.10%
Valley Financial Trust II |  | September 26, 2005 |  | December 15, 2035 |  | 7,217 |  |  | 1.67 | % |  | 30-day LIBOR + 1.49%
Valley Financial Trust III |  | December 15, 2006 |  | January 30, 2037 |  | 5,155 |  |  | 1.94 | % |  | 30-day LIBOR + 1.73%
Southcoast Capital Trust III |  | August 5, 2005 |  | September 30, 2035 |  | 10,310 |  |  | 1.70 | % |  | 30-day LIBOR + 1.50%
Subordinated Debt |  |  |  |  |  |  |  |
Pinnacle Bank Subordinated Notes |  | July 30, 2015 |  | July 30, 2025 |  | 60,000 |  |  | 3.33 | % |  | 3-month LIBOR + 3.128%
Pinnacle Bank Subordinated Notes |  | March 10, 2016 |  | July 30, 2025 |  | 70,000 |  |  | 3.33 | % |  | 3-month LIBOR + 3.128%
Pinnacle Financial Subordinated Notes |  | November 16, 2016 |  | November 16, 2026 |  | 120,000 |  |  | 5.25 | % |  | Fixed (1)
Pinnacle Financial Subordinated Notes |  | September 11, 2019 |  | September 15, 2029 |  | 300,000 |  |  | 4.13 | % |  | Fixed (2)
Debt issuance costs and fair value adjustments |  | (11,993) |  |  |  |  |
Total subordinated debt and other borrowings |  | $ | 671,002 |  |  |  |  |

(1) Migrates to three month LIBOR + 3.884% beginning November 16, 2021 through the end of the term.
(2) Migrates to three month LIBOR + 2.775% beginning September 15, 2024 through the end of the term.
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We presently intend to redeem the $130.0 million aggregate principal amount of subordinated notes issued by Pinnacle Bank listed in the table above later this year. We are also evaluating the redemption of the $120.0 million aggregate principal amount of subordinated notes issued by Pinnacle Financial listed in the table above later this year. The redemption of each tranche of subordinated notes is subject to receipt of all regulatory permissions for such redemption, which we have not yet sought, and our ultimate determination to redeem such notes. Neither Pinnacle Bank nor Pinnacle Financial is under any obligation to redeem these subordinated notes.
Capital Resources. At March 31, 2021, our shareholders' equity amounted to $5.0 billion compared to $4.9 billion at December 31, 2020. During the second quarter of 2020, we issued 9.0 million depositary shares, each representing a 1/40th interest in a share of Series B Preferred Stock with a liquidation preference of $1,000 per share of Series B Preferred Stock in a registered public offering to both retail and institutional investors. Net proceeds from the transaction after underwriting discounts and offering costs were approximately $217.1 million. The net proceeds were initially retained by Pinnacle Financial and the remaining net proceeds are available to support our obligations including payments related to our outstanding indebtedness and dividend payments on the Series B preferred stock, to support the capital needs of our company and our bank, and for other general corporate purposes. For additional information regarding our capital and shareholders’ equity, see Note 10. Regulatory Matters in the Notes to our Consolidated Financial Statements elsewhere in this Form 10-Q.
Share Repurchase Program. During the quarter ended March 31, 2020, we repurchased approximately 1.0 million shares of our common stock at an aggregate cost of $50.8 million under our previously authorized share repurchase agreement. Our last purchase of shares of our common stock under the prior share repurchase program occurred on March 19, 2020, as we suspended the program due to uncertainty surrounding the COVID-19 pandemic and it remained suspended until its expiration on December 31, 2020. On January 19, 2021, our board of directors authorized a new share repurchase program for up to $125.0 million of our outstanding common stock. The authorization for this program will remain in effect through March 31, 2022. We purchased no shares under our current program in the first three months of 2021.
Dividends. Pursuant to Tennessee banking law, our bank may not, without the prior consent of the TDFI, pay any dividends to us in a calendar year in excess of the total of our bank's retained net profits for that year plus the retained net profits for the preceding two years, which was $574.3 million at March 31, 2021. Our bank did not pay dividends to us during the three months ended March 31, 2021.
During the three months ended March 31, 2021, we paid $13.9 million in dividends to our common shareholders and $3.8 million in dividends on our Series B preferred stock. On April 20, 2021, our board of directors declared a $0.18 per share quarterly cash dividend to common shareholders which should approximate $14.0 million in aggregate dividend payments that are expected to be paid on May 28, 2021 to common shareholders of record as of the close of business on May 7, 2021. Additionally, on that same day, our board of directors approved a quarterly dividend of approximately $3.8 million, or $16.88 per share (or $0.422 per depositary share), on the Series B preferred stock payable on June 1, 2021 to shareholders of record at the close of business on May 17, 2021. The amount and timing of all future dividend payments, if any, is subject to board discretion and will depend on our earnings, capital position, financial condition and other factors, including, if necessary, our receipt of dividends from Pinnacle Bank, regulatory capital requirements, as they become known to us and receipt of any regulatory approvals that may become required as a result of our and our bank subsidiary's financial results.
Market and Liquidity Risk Management
Our objective is to manage assets and liabilities to provide a satisfactory, consistent level of profitability within the framework of established liquidity, loan, investment, borrowing, and capital policies. Our Asset Liability Management Committee (ALCO) is charged with the responsibility of monitoring these policies, which are designed to ensure acceptable composition of asset/liability mix. Two critical areas of focus for ALCO are interest rate sensitivity and liquidity risk management.
Interest Rate Sensitivity. In the normal course of business, we are exposed to market risk arising from fluctuations in interest rates. ALCO measures and evaluates the interest rate risk so that we can meet customer demands for various types of loans and deposits. ALCO determines the most appropriate amounts of on-balance sheet and off-balance sheet items. Measurements which we use to help us manage interest rate sensitivity include an earnings simulation model and an economic value of equity (EVE) model.
Our interest rate sensitivity modeling incorporates a number of assumptions for both earnings simulation and EVE, including loan and deposit re-pricing characteristics, the rate of loan prepayments, etc. ALCO periodically reviews these assumptions for accuracy based on historical data and future expectations. Our ALCO policy requires that the base scenario assumes rates remain flat and is the scenario to which all others are compared in order to measure the change in net interest income and EVE. Policy limits are applied to the results of certain modeling scenarios. While the primary policy scenarios focus is on a twelve month time frame for the earnings simulations model, longer time horizons are also modeled. All policy scenarios assume a static volume forecast where the balance sheet is held constant, although other scenarios are modeled.
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Earnings simulation model. We believe interest rate risk is best measured by our earnings simulation modeling. Earning assets, interest-bearing liabilities and off-balance sheet financial instruments are combined with forecasts of interest rates for the next 12 months and are combined with other factors in order to produce various earnings simulations over that same 12-month period. To limit interest rate risk, we have policy guidelines for our earnings at risk which seek to limit the variance of net interest income in both gradual and instantaneous changes to interest rates. For instantaneous upward and downward changes in rates from management's flat interest rate forecast over the next twelve months, assuming a static balance sheet, the following estimated changes are calculated:

| Estimated % Change in Net Interest Income Over 12 Months |
| March 31, 2021* |
Instantaneous Rate Change |  |
100 bps increase | (1.0 | %) |
200 bps increase | (1.2 | %) |
100 bps decrease | (0.2 | %) |

*: Negative interest rates are not contemplated in these scenarios. The Treasury curve and all short-term rate indices, such as Fed Funds, LIBOR, etc., are assumed to be zero bound.
While an instantaneous and severe shift in interest rates was used in this analysis to provide an estimate of exposure under these scenarios, we believe that a gradual shift in interest rates would have a more modest impact. Further, the earnings simulation model does not take into account factors such as future balance sheet growth, changes in product mix, changes in yield curve relationships, hedging activities we might take and changing product spreads that could mitigate any potential adverse impact of changes in interest rates.
The behavior of our deposit portfolio in the baseline forecast and in alternate interest rate scenarios set out in the table above is a key assumption in our projected estimates of net interest income. The projected impact on net interest income in the table above assumes no change in deposit portfolio size or mix from the baseline forecast in alternative rate environments. In higher rate scenarios, any customer activity resulting in the replacement of low-cost or noninterest-bearing deposits with higher-yielding deposits or market-based funding would reduce the assumed benefit of those deposits. The projected impact on net interest income in the table above also assumes a "through-the-cycle" non-maturity deposit beta which may not be an accurate predictor of actual deposit rate changes realized in scenarios of smaller and/or non-parallel interest rate movements.
At March 31, 2021, our earnings simulation model indicated we were in compliance with our policies for interest rate scenarios for which we model as required by our board approved Asset Liability Policy.
Economic value of equity model. While earnings simulation modeling attempts to determine the impact of a changing rate environment to our net interest income, our EVE model measures estimated changes to the economic values of our assets, liabilities and off-balance sheet items as a result of interest rate changes. Economic values are determined by discounting expected cash flows from assets, liabilities and off-balance sheet items, which establishes a base case EVE. We then shock rates as prescribed by our Asset Liability Policy and measure the sensitivity in EVE values for each of those shocked rate scenarios versus the base case. The Asset Liability Policy sets limits for those sensitivities. At March 31, 2021, our EVE modeling calculated the following estimated changes in EVE due to instantaneous upward and downward changes in rates:

| March 31, 2021*
Instantaneous Rate Change |
100 bps increase | (5.7 | %)
200 bps increase | (10.5 | %)
100 bps decrease | (2.1 | %)

*: Negative interest rates are not contemplated in these scenarios. The Treasury curve and all short-term rate indices, such as Fed Funds, LIBOR, etc., are assumed to be zero bound.
While an instantaneous and severe shift in interest rates was used in this analysis to provide an estimate of exposure under these scenarios, we believe that a gradual shift in interest rates would have a more modest impact. Since EVE measures the discounted present value of cash flows over the estimated lives of instruments, the change in EVE does not directly correlate to the degree that earnings would be impacted over a shorter time horizon (i.e., the current year). Further, EVE does not take into account factors such as future balance sheet growth, changes in product mix, changes in yield curve relationships, hedging activities we might take and changing product spreads that could mitigate the adverse impact of changes in interest rates.
At March 31, 2021, our EVE model indicated we were in compliance with our policies for all interest rate scenarios for which we model as required by our board approved Asset Liability Policy.
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Most likely earnings simulation models. We also analyze a most-likely earnings simulation scenario that projects the expected change in rates based on a forward yield curve adopted by management using expected balance sheet volumes forecasted by management. Separate growth assumptions are developed for loans, investments, deposits, etc. Other interest rate scenarios analyzed by management may include delayed rate shocks, yield curve steepening or flattening, or other variations in rate movements to further analyze or stress our balance sheet under various interest rate scenarios. Each scenario is evaluated by management. These processes assist management to better anticipate our financial results and, as a result, management may determine the need to invest in other operating strategies and tactics which might enhance results or better position the firm's balance sheet to reduce interest rate risk going forward.
Each of the above analyses may not, on its own, be an accurate indicator of how our net interest income will be affected by changes in interest rates. Income associated with interest-earning assets and costs associated with interest-bearing liabilities may not be affected uniformly by changes in interest rates. In addition, the magnitude and duration of changes in interest rates may have a significant impact on net interest income. For example, although certain assets and liabilities may have similar maturities or periods of repricing, they may react in different degrees to changes in market interest rates. Interest rates on certain types of assets and liabilities fluctuate in advance of changes in general market rates, while interest rates on other types may lag behind changes in general market rates. In addition, certain assets, such as adjustable rate mortgage loans, have features (generally referred to as interest rate caps and floors) which limit changes in interest rates. Prepayment and early withdrawal levels also could deviate significantly from those assumed in calculating the maturity of certain instruments. The ability of many borrowers to service their debts also may decrease during periods of rising interest rates. ALCO reviews each of the above interest rate sensitivity analyses along with several different interest rate scenarios as part of its responsibility to provide a satisfactory, consistent level of profitability within the framework of established liquidity, loan, investment, borrowing, and capital policies.
Management's model governance, model implementation and model validation processes and controls are subject to review in our regulatory examinations to ensure they are in compliance with the most recent regulatory guidelines and industry and regulatory practices. Management utilizes a respected, sophisticated third party asset liability modeling software to help ensure implementation of management's assumptions into the model are processed as intended in a robust manner. That said, there are numerous assumptions regarding financial instrument behavior that are integrated into the model. The assumptions are formulated by combining observations gleaned from our historical studies of financial instruments and our best estimations of how, if at all, these instruments may behave in the future given changes in economic conditions, technology, etc. These assumptions may prove to be inaccurate. Additionally, given the large number of assumptions built into our asset liability modeling software, it is difficult, at best, to compare our results to other firms.
ALCO may determine that Pinnacle Financial should over time become more or less asset or liability sensitive depending on the underlying balance sheet circumstances and our conclusions as to anticipated interest rate fluctuations in future periods. At present, ALCO has determined that its "most likely" rate scenario considers no change in short-term interest rates throughout the remainder of 2021. Our "most likely" rate forecast is based primarily on information we acquire from a service which includes a consensus forecast of numerous interest rate benchmarks. We may implement additional actions designed to achieve our desired sensitivity position which could change from time to time.
We have in the past used, and may in the future continue to use, derivative financial instruments as one tool to manage our interest rate sensitivity, including in our mortgage lending program, while continuing to meet the credit and deposit needs of our customers. For further details on the derivatives we currently use, see Note 8. Derivative Instruments in the Notes to our Consolidated Financial Statements elsewhere in this Form 10-Q.
We may also enter into interest rate swaps to facilitate customer transactions and meet their financing needs. These swaps qualify as derivatives, even though they are not designated as hedging instruments.
Liquidity Risk Management. The purpose of liquidity risk management is to ensure that there are sufficient cash flows to satisfy loan demand, deposit withdrawals, and our other needs. Traditional sources of liquidity for a bank include asset maturities and growth in core deposits. A bank may achieve its desired liquidity objectives from the management of its assets and liabilities and by internally generated funding through its operations. Funds invested in marketable instruments that can be readily sold and the continuous maturing of other earning assets are sources of liquidity from an asset perspective. The liability base provides sources of liquidity through attraction of increased deposits and borrowing funds from various other institutions.
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To assist in determining the adequacy of our liquidity, we perform a variety of liquidity stress tests including idiosyncratic, systemic and combined scenarios for both moderate and severe events. Liquidity is defined as the ability to convert assets into cash or cash equivalents without significant loss and to raise additional funds by increasing liabilities. Liquidity management involves maintaining our ability to meet the daily cash flow requirements of our customers, both depositors and borrowers. We seek to maintain a sufficiently liquid asset balance to ensure our ability to meet our obligations. The amount of the appropriate minimum liquid asset balance is determined through severe liquidity stress testing as measured by our liquidity coverage ratio calculation. At March 31, 2021, we were in compliance with our internal policies related to liquidity coverage ratio.
Changes in interest rates also affect our liquidity position. We currently price deposits in response to market rates. If deposits are not priced in response to market rates, a loss of deposits, particularly noncore deposit, could occur which would negatively affect our liquidity position.
Scheduled loan payments are a relatively stable source of funds, but loan payoffs and deposit flows fluctuate significantly, being influenced by interest rates, general economic conditions and competition. Additionally, debt security investments are subject to prepayment and call provisions that could accelerate their payoff prior to stated maturity. We attempt to price our deposit products to meet our asset/liability objectives consistent with local market conditions. Our ALCO is responsible for monitoring our ongoing liquidity needs. Our regulators also monitor our liquidity and capital resources on a periodic basis.
In addition, our bank is a member of the FHLB Cincinnati. As a result, our bank receives advances from the FHLB Cincinnati, pursuant to the terms of various borrowing agreements, which support our funding needs. Under the borrowing agreements with the FHLB Cincinnati, our bank has pledged certain qualifying residential mortgage loans and, pursuant to a blanket lien, all qualifying commercial mortgage loans as collateral. As such, Pinnacle Bank may use the FHLB Cincinnati as a source of liquidity depending on its ALCO strategies. Additionally, we may pledge additional qualifying assets, reduce the amount of pledged assets or experience changes in the value of pledged assets with the FHLB Cincinnati to increase or decrease our borrowing capacity with the FHLB Cincinnati. At March 31, 2021, we estimate we had $2.9 billion in additional borrowing capacity with the FHLB Cincinnati. However, incremental borrowings are made via a formal request by Pinnacle Bank and the subsequent approval by the FHLB Cincinnati. At March 31, 2021, our bank had received advances from the FHLB Cincinnati totaling $888.1 million. At March 31, 2021, the scheduled maturities of Pinnacle Bank's FHLB Cincinnati advances and interest rates are as follows (in thousands):

Scheduled Maturities | Amount |  | Interest Rates (1)
2021 | $ | — |  |  | —%
2022 | — |  |  | —%
2023 | — |  |  | —%
2024 | — |  |  | —%
2025 | 116,250 |  |  | 0.56%
Thereafter | 775,013 |  |  | 2.15%
| 891,263 |  |  |
Deferred costs | (3,148) |  |  |
Total Federal Home Loan Bank advances | $ | 888,115 |  |  |
Weighted average interest rate |  | 1.94%

(1)Some FHLB Cincinnati advances include variable interest rates and could increase in the future. The table reflects rates in effect as of March 31, 2021.
Pinnacle Bank also has accommodations with upstream correspondent banks available for unsecured short-term advances which aggregate $195 million. These accommodations have various covenants related to their term and availability, and in most cases must be repaid within a month of borrowing. We had no outstanding borrowings at March 31, 2021 under these agreements. Our bank also had approximately $2.9 billion in available Federal Reserve discount window lines of credit at March 31, 2021.
At March 31, 2021, excluding reciprocating time and money market deposits issued through the Promontory Network, we had $2.6 billion of brokered deposits. Historically, we have issued brokered certificates of deposit through several different brokerage houses based on competitive bid. During 2020, and in response to the uncertainty resulting from the COVID-19 pandemic, we intentionally increased our levels of on-balance sheet liquidity. During the first quarter of 2020, this increase was funded by a combination of increased core deposits, increased borrowings from the FHLB Cincinnati and increases in brokered time deposits. Core deposit growth during the remainder of 2020 and through the first quarter of 2021 increased such that we were able to prepay certain wholesale maturities while maintaining an elevated level of on-balance sheet liquidity. We intend to prepay and/or let mature wholesale funding as core deposit growth allows over the next few quarters.
Banking regulators have defined additional liquidity guidelines, through the issuance of the Basel III Liquidity Coverage Ratio (LCR) and the Modified LCR. These regulatory guidelines became effective January 2015 with phase in over subsequent years and require these large institutions to follow prescriptive guidance in determining an absolute level of a high quality liquid asset (HQLA) buffer
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that must be maintained on their balance sheets in order to withstand a potential liquidity crisis event. Although Pinnacle Financial follows the principles outlined in the Interagency Policy Statement on Liquidity Risk Management, issued March 2010, to determine its HQLA buffer, Pinnacle Financial is not currently subject to these regulations. However, these formulas could eventually be imposed on smaller banks, such as Pinnacle Bank, and require an increase in the absolute level of liquidity on our balance sheet, which could result in lower net interest margins for us in future periods.
At March 31, 2021, we had no individually significant commitments for capital expenditures. But, we believe the number of our locations, including non-branch locations, will increase over an extended period of time across our footprint and that certain of our locations will be in need of required renovations. In future periods, these expansions and renovation projects may lead to additional equipment and occupancy expenses as well as related increases in salaries and benefits expense. Additionally, we expect we will continue to incur costs associated with technology improvements to enhance the infrastructure of our firm.
Off-Balance Sheet Arrangements. At March 31, 2021, we had outstanding standby letters of credit of $237.7 million and unfunded loan commitments outstanding of $10.2 billion. Because these commitments generally have fixed expiration dates and many will expire without being drawn upon, the total commitment level does not necessarily represent future cash requirements. If needed to fund these outstanding commitments, Pinnacle Bank has the ability to liquidate Federal funds sold or, on a short-term basis, to borrow and purchase Federal funds from other financial institutions.
Impact of Inflation
The consolidated financial statements and related consolidated financial data presented herein have been prepared in accordance with U.S. GAAP and practices within the banking industry which require the measurement of financial position and operating results in terms of historical dollars without considering the changes in the relative purchasing power of money over time due to inflation. Unlike most industrial companies, virtually all the assets and liabilities of a financial institution are monetary in nature. As a result, interest rates have a more significant impact on a financial institution's performance than the effects of general levels of inflation.
Recently Adopted Accounting Pronouncements
See "Part I - Item 1. Consolidated Financial Statements - Note. 1 Summary of Significant Accounting Policies" of this Report for further information.
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ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
The information required by this Item 3 is included on pages 35 through 56 of Part I - Item 2 - "Management's Discussion and Analysis of Financial Condition and Results of Operations."
ITEM 4. CONTROLS AND PROCEDURES
Evaluation of Disclosure Controls and Procedures
Pinnacle Financial maintains disclosure controls and procedures, as defined in Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934 (the "Exchange Act"), that are designed to ensure that information required to be disclosed by it in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms and that such information is accumulated and communicated to Pinnacle Financial's management, including its Chief Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosure. Pinnacle Financial carried out an evaluation, under the supervision and with the participation of its management, including its Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of its disclosure controls and procedures as of the end of the period covered by this report. Based on the evaluation of these disclosure controls and procedures, the Chief Executive Officer and Chief Financial Officer concluded that Pinnacle Financial's disclosure controls and procedures were effective as of the end of the period covered by this report in ensuring that the information required to be disclosed by Pinnacle Financial in the reports it files or submits under the Exchange Act is (i) accumulated and communicated to Pinnacle Financial's management (including the Principal Executive Officer and Principal Financial Officer) to allow timely decisions regarding required disclosure, and (ii) recorded, processed, summarized and reported within the time periods specified in the SEC's rules and forms.
Changes in Internal Controls
No change in our internal control over financial reporting (as such term is defined in Exchange Act Rule 13a-15(f) or 15d-(f)) occurred during fiscal quarter ended March 31, 2021 that materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.
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PART II. OTHER INFORMATION
ITEM 1. LEGAL PROCEEDINGS
Various legal proceedings to which Pinnacle Financial or a subsidiary of Pinnacle Financial is a party arise from time to time in the normal course of business. There are no material pending legal proceedings to which Pinnacle Financial or a subsidiary of Pinnacle Financial is a party or of which any of their property is the subject.
ITEM 1A. RISK FACTORS
Investing in Pinnacle Financial involves various risks which are particular to our company, our industry and our market area. We believe all significant risks to investors in Pinnacle Financial have been outlined in Part II, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2020. However, other risks may prove to be important in the future, and new risks may emerge at any time. We cannot predict with certainty all potential developments which could materially affect our financial performance or condition. There has been no material change to our risk factors as previously disclosed in the above described Annual Report on Form 10-K.
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
The following table discloses shares of our common stock repurchased during the three months ended March 31, 2021.

Period |  | Total Number of Shares Repurchased (1)(2) |  | Average Price Paid Per Share |  | Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (2) |  | Maximum Number (or Approximate Dollar Value) of Shares That May Yet Be Purchased Under the Plans or Programs
January 1, 2021 to January 31, 2021 |  | 30,654 |  |  | $ | 69.96 |  |  | — |  |  | 125,000,000 |
February 1, 2021 to February 28, 2021 |  | 47,841 |  |  | 81.21 |  |  | — |  |  | 125,000,000 |
March 1, 2021 to March 31, 2021 |  | 59 |  |  | 88.76 |  |  | — |  |  | 125,000,000 |
Total |  | 78,554 |  |  | $ | 76.79 |  |  | — |  |  | 125,000,000 |

______________________
(1)During the quarter ended March 31, 2021, 244,075 shares of restricted stock or performance-based vesting restricted stock units previously awarded to certain of the participants in our equity incentive plans vested. We withheld 78,554 shares of common stock to satisfy tax withholding requirements associated with the vesting of these awards.
(2)On January 19, 2021, the board of directors authorized a share repurchase program for up to $125.0 million of Pinnacle Financial's outstanding common stock. The share repurchase program is set to expire on March 31, 2022. Share repurchases may be made from time to time, on the open market or in privately negotiated transactions, at the discretion of the management of Pinnacle Financial, after the board of directors of Pinnacle Financial authorizes a repurchase program. The approved share repurchase program does not obligate Pinnacle Financial to repurchase any dollar amount or number of shares, and the program may be extended, modified, suspended, or discontinued at any time. Stock repurchases generally are affected through open market purchases, and may be made through unsolicited negotiated transactions. The timing of these repurchases will depend on market conditions and other requirements. Pinnacle Financial did not repurchase any shares of its common stock under its current repurchase plan during the three months ended March 31, 2021.
ITEM 3. DEFAULTS UPON SENIOR SECURITIES
Not applicable
ITEM 4. MINE SAFETY DISCLOSURES
Not applicable
ITEM 5. OTHER INFORMATION
None
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ITEM 6. EXHIBITS

10.1 |  | Form of 2021 Restricted Share Unit Award Agreement, incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on January 27, 2021.
10.2 |  | Form of Named Executive Officers 2021 Performance Unit Award Agreement, incorporated herein by reference to Exhibit 10.2 to the Company's Current Report on Form 8-K filed on January 27, 2021.
10.3 |  | Form of Amendment to Named Executive Officers 2019 Performance Unit Award Agreement, incorporated herein by reference to Exhibit 10.3 to the Company's Current Report on Form 8-K filed on January 27, 2021.
10.4 |  | Form of Amendment to Named Executive Officers 2020 Performance Unit Award Agreement, incorporated herein by reference to the Company's Current Report on Form 8-K filed on January 27, 2021.
10.5 |  | Pinnacle Financial Partners, Inc. 2021 Annual Cash Incentive Plan, incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on March 2, 2021.
10.6 |  | Pinnacle Financial Partners, Inc. Amended and Restated 2018 Omnibus Equity Incentive Plan, incorporated herein by reference to Exhibit 10.1 to the Company's Current Report on Form 8-K filed on April 21, 2021.
31.1* |  | Certification pursuant to Rule 13a-14(a)/15d-14(a)
31.2* |  | Certification pursuant to Rule 13a-14(a)/15d-14(a)
32.1** |  | Certification pursuant to 18 USC Section 1350 - Sarbanes-Oxley Act of 2002
32.2** |  | Certification pursuant to 18 USC Section 1350 - Sarbanes-Oxley Act of 2002
101.INS* |  | Inline XBRL Instance Document
101.SCH* |  | Inline XBRL Schema Documents
101.CAL* |  | Inline XBRL Calculation Linkbase Document
101.LAB* |  | Inline XBRL Label Linkbase Document
101.PRE* |  | Inline XBRL Presentation Linkbase Document
101.DEF* |  | Inline XBRL Definition Linkbase Document
104 |  | The cover page from the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2020, formatted in Inline XBRL (included in Exhibit 101)
* |  | Filed herewith.
** |  | Furnished herewith.

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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

|  | PINNACLE FINANCIAL PARTNERS, INC.
May 7, 2021 |  | /s/ M. Terry Turner
|  | M. Terry Turner
|  | President and Chief Executive Officer
May 7, 2021 |  | /s/ Harold R. Carpenter
|  | Harold R. Carpenter
|  | Chief Financial Officer

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