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Summary of Significant Accounting Policies (Policies) | 12 Months Ended
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Dec. 31, 2023
Accounting Policies [Abstract] |
Basis of Presentation | The consolidated financial statements presented herein are at December 31, 2023 and 2022, and for the years ended December 31, 2023, 2022, and 2021. These consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") — as prescribed by the Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) — and the rules and regulations of the Securities and Exchange Commission ("SEC"). In the opinion of management, all normal and recurring adjustments have been made to present fairly the financial condition of the Company at December 31, 2023 and 2022, and results of operations for all periods presented.
Principles of Consolidation | In accordance with GAAP, we determine whether we must consolidate transferred financial assets and variable interest entities (“VIEs”) for financial reporting purposes. We currently consolidate the assets and liabilities of certain Sequoia securitization entities issued prior to 2012 ("Legacy Sequoia"), certain entities formed during and after 2012 in connection with the securitization of Redwood Select prime loans and Redwood Choice expanded-prime loans ("Sequoia"), entities formed in connection with the securitization of CoreVest business purpose lending ("BPL") term and bridge loans ("CAFL") and entities formed in connection with the securitization of HEI. We also consolidate the assets and liabilities of certain Freddie Mac K-Series and Freddie Mac Seasoned Loans Structured Transaction ("SLST") securitizations (and re-securitizations of such SLST securities) in which we have invested. Each securitization entity is independent of Redwood and of each other and the assets and liabilities are not owned by and are not legal obligations of Redwood Trust, Inc. Our exposure to these entities is primarily through the financial interests we have purchased or retained, although for certain entities we are exposed to financial risks associated with our role as a sponsor or co-sponsor, servicing administrator, collateral administrator or depositor of these entities or as a result of our having sold assets directly or indirectly to these entities. For financial reporting purposes, the underlying loans owned at the consolidated Legacy Sequoia, Sequoia and Freddie Mac SLST entities are shown under Residential loans held-for-investment, at fair value, the underlying loans at the consolidated Freddie Mac K-Series entity are shown under Consolidated Agency multifamily loans, at fair value, the underlying BPL term and bridge loans at the consolidated CAFL entities are shown under Business purpose loans held-for-investment, at fair value, and the underlying HEI at the consolidated HEI securitization entities are shown under Home equity investments, at fair value on our consolidated balance sheets. The asset-backed securities (“ABS”) issued to third parties by these entities are shown under ABS issued. In our consolidated statements of income (loss), we record interest income on the loans owned at these entities and interest expense on the ABS issued by these entities as well as fair value changes, other income and expenses associated with these entities' activities. See Note 15 for further discussion on ABS issued. We also consolidate two partnerships ("Servicing Investment" entities) through which we have invested in servicing-related assets. We maintain an 80% ownership interest in each entity and have determined that we are the primary beneficiary of these partnerships.
Use of Estimates | The preparation of financial statements requires us to make a number of significant estimates. These include estimates of fair value of certain assets and liabilities, amounts and timing of credit losses, prepayment rates, valuation allowances, and other estimates that affect the reported amounts of certain assets and liabilities as of the date of the consolidated financial statements and the reported amounts of certain revenues and expenses during the reported periods. It is likely that changes in these estimates (e.g., valuation changes due to supply and demand, credit performance, prepayments, interest rates, or other reasons) will occur in the near term. Our estimates are inherently subjective in nature and actual results could differ from our estimates and the differences could be material.
Business Combinations | We use the acquisition method of accounting for business combinations, under which the purchase price is allocated to the fair values of the assets acquired and liabilities assumed at the acquisition date. The excess of the purchase price over the amount allocated to the assets acquired and liabilities assumed is recorded as goodwill. Acquisition-related costs are expensed as incurred.
Fair Value Measurements | Our consolidated financial statements include assets and liabilities that are measured at their estimated fair values in accordance with GAAP. A fair value measurement represents the price at which an orderly transaction would occur between willing market participants at the measurement date. We develop fair values for financial assets or liabilities based on available inputs and pricing that is observed in the marketplace. After considering all available indications of the appropriate rate of return that market participants would require, we consider the reasonableness of the range indicated by the results to determine an estimate that is most representative of fair value. The markets for many of the assets that we invest in and issue are generally illiquid. Establishing fair values for illiquid assets and liabilities is inherently subjective and is often dependent upon our estimates and modeling assumptions. If we determine that either the volume and/or level of trading activity for an asset or liability has significantly decreased from normal market conditions, or price quotations or observable inputs are not associated with orderly transactions, the market inputs that we obtain might not be relevant. For example, broker or pricing service quotes might not be relevant if an active market does not exist for the financial asset or liability. The nature of the quote (for example, whether the quote is an indicative price or a binding offer) is also evaluated. In circumstances where relevant market inputs cannot be obtained, increased analysis and management judgment are required to estimate fair value. This generally requires us to establish internal assumptions about future cash flows and appropriate risk-adjusted discount rates. Regardless of the valuation inputs we apply, the objective of fair value measurement for assets is unchanged from what it would be if markets were operating at normal activity levels and/or transactions were orderly; that is, to determine the current exit price.
Fair Value Option | We have the option to measure eligible financial assets, financial liabilities, and commitments at fair value on an instrument-by-instrument basis. This option is available when we first recognize a financial asset or financial liability or enter into a firm commitment. Subsequent changes in the fair value of assets, liabilities, and commitments where we have elected the fair value option are recorded in our consolidated statements of income (loss). We elect the fair value option for certain residential loans, business purpose loans, interest-only (“IO”) and certain subordinate securities, MSRs, servicer advance investments, HEI, and certain of our other investments. We generally elect the fair value option for residential and business purpose loans that are held-for-sale, due to our intent to sell or securitize the loans in the near-term and for BPL bridge loans due to their shorter duration. We elect the fair value option for our IO and certain subordinate securities, and MSRs, for which we may hedge market interest rate risk. In addition, we elect the fair value option for the assets and liabilities of our consolidated Sequoia, Freddie Mac SLST (not including the SLST re-securitization), Freddie Mac K-Series, CAFL Term, one CAFL Bridge and HEI entities in accordance with GAAP accounting for collateralized financing entities ("CFEs").
Real Estate Loans | Residential Loans - Held-for-Sale at Fair Value Residential loans held-for-sale include loans that we are marketing for sale to third parties, including transfers to securitization entities that we plan to sponsor. We generally elect the fair value option for residential loans that we purchase with the intent to sell to third parties or transfer to Sequoia securitizations. Coupon interest is recognized as revenue when earned and deemed collectible or until a loan becomes more than 90 days past due, at which point the loan is placed on nonaccrual status and any accrued interest is reversed against interest income. When a seriously delinquent loan previously placed on nonaccrual status has cured, meaning all delinquent principal and interest have been remitted by the borrower, the loan is placed back on accrual status. Changes in fair value for these loans are recurring and are reported through our consolidated statements of income (loss) in Mortgage banking activities, net. Residential Loans - Held-for-Investment At Fair Value We record residential loans held at consolidated Sequoia and Freddie Mac SLST entities at fair value. In accordance with accounting guidance for CFEs, we use the fair value of the ABS issued by these entities (which we determined to be more observable) to determine the fair value of the loans held at these entities. Coupon interest for these loans is recognized as revenue based on amounts expected to be paid to the securities issued by these entities. Changes in fair value for these loans and related ABS are recurring and are reported through our consolidated statements of income (loss) in Investment fair value changes, net. Business Purpose Loans We originate and purchase residential investor loans (also referred to as business purpose loans or BPL loans), for subsequent securitization, sale, or transfer into our investment portfolio. Business purpose loans are loans to investors in single-family and multifamily housing properties, which we classify as either "term" loans (which include loans with maturities that generally range from 3 to 30 years) or "bridge" loans (which include loans with maturities that generally range from 12 to 36 months). Single-family loans are mortgage loans secured by residential real estate (primarily 1-4 unit) that the borrower owns as an investment property. BPL bridge loans are mortgage loans which are generally secured by unoccupied residential or multifamily real estate that the borrower owns as an investment and that is being renovated, rehabilitated or constructed. Business Purpose Loans Held-for-Sale at Fair Value – we classify business purpose loans as held-for-sale at fair value when we originate or purchase these loans with the intent to transfer the loans to securitization entities or sell the loans to third parties. Coupon interest for these loans is recognized as revenue when earned and deemed collectible or until a loan becomes more than 90 days past due, at which point the loan is placed on nonaccrual status and any accrued interest is reversed against interest income. When a seriously delinquent loan previously placed on nonaccrual status has cured, meaning all delinquent principal and interest have been remitted by the borrower, the loan is placed back on accrual status. Changes in fair value are recurring and reported through our consolidated statements of income (loss) in Mortgage banking activities, net. Business Purpose Loans Held-for-Investment at Fair Value – we classify business purpose loans as held-for-investment at fair value if we intend to hold these loans to maturity. Coupon interest for these loans is recognized as revenue when earned and deemed collectible or until a loan becomes more than 90 days past due, at which point the loan is placed on nonaccrual status and any accrued interest is reversed against interest income. When a seriously delinquent loan previously placed on nonaccrual status has cured, meaning all delinquent principal and interest have been remitted by the borrower, the loan is placed back on accrual status. Changes in fair value for these loans are recurring and are reported through our consolidated statements of income (loss) in Investment fair value changes, net. In addition, we record loans held at consolidated CAFL Term entities and one CAFL Bridge entity at fair value. In accordance with accounting guidance for CFEs, we use the fair value of the ABS issued by these entities (which we determined to be more observable) to determine the fair value of the loans held at these entities. Coupon interest for these loans is recognized as revenue based on amounts expected to be paid to the securities issued by these entities. Changes in fair value for these loans and related ABS are recurring and are reported through our consolidated statements of income (loss) in Investment fair value changes, net. Consolidated Agency Multifamily Loans, Held-for-Investment at Fair Value Multifamily loans are mortgage loans secured by multifamily properties, held in a Freddie Mac-sponsored K-series securitization trust that we consolidate. In accordance with accounting guidance for CFEs, we use the fair value of the ABS issued by the Freddie Mac K-Series entity (which we determined to be more observable) to determine the fair value of the loans. Coupon interest for these loans is recognized as revenue based on amounts expected to be paid to the securities issued by this entity. Changes in fair value for the loans and related ABS are recurring and are reported through our consolidated statements of income (loss) in Investment fair value changes, net. Repurchase Reserves We sell and have sold residential and business purpose mortgage loans to various parties, including (1) securitization trusts, and (2) banks and other financial institutions that purchase mortgage loans for investment or private label securitization. We may be required to repurchase mortgage loans we have sold, or loans associated with MSRs we have purchased, in the event of a breach of specified contractual representations and warranties made in connection with these sales and purchases. Additionally, we generally have a direct obligation to repurchase residential whole loans we sell in the event of any early payment defaults (or EPDs) by the underlying mortgage borrowers within certain specified periods following the sales. We do not originate residential mortgage loans and believe the initial risk of loss due to loan repurchases (i.e., due to a breach of representations and warranties) would generally be a contingency to the companies from whom we acquired the loans or MSRs. However, in some cases, such as where loans or MSRs were acquired from companies that have since become insolvent, we may have to bear the loss associated with a loan repurchase. Furthermore, even if we do not have to ultimately bear such a loss because we can recover from the company that sold us the loan or the MSR, there could be a delay in making that recovery. We establish reserves for mortgage repurchase liabilities related to various representations and warranties that reflect management’s estimate of losses for loans for which we could have a repurchase obligation, based on a combination of factors. Such factors can include estimated future defaults and loan repurchase rates, the potential severity of loss in the event of defaults, and the probability of our being liable for a repurchase obligation. We establish a reserve at the time loans are sold or transferred into securitizations, and continually update our reserve estimate during its life. The reserve for mortgage loan repurchase losses is included in other liabilities on our consolidated balance sheets and the related expense is included as a component of Mortgage banking activities, net on our consolidated statements of income (loss).
Real Estate Securities, at Fair Value | Our securities primarily consist of mortgage-backed securities (“MBS”) collateralized by residential, re-performing ("RPL") and multifamily mortgage loans. We classify our real estate securities as trading or available-for-sale securities. Trading Securities We primarily denote trading securities as those securities where we have adopted the fair value option. Trading securities are carried at their estimated fair values. Coupon interest is recognized as interest income when earned and deemed collectible. Changes in the fair value of securities designated as trading securities are generally reported in Investment fair value changes, net on our consolidated statements of income (loss). Available-for-Sale Securities AFS securities are carried at their estimated fair value with unrealized gains and losses excluded from earnings (except when an allowance for credit losses is recognized, as discussed below) and reported in Accumulated other comprehensive income (loss) (“AOCI”), a component of stockholders’ equity. Interest income on AFS securities is accrued based on their outstanding principal balance and contractual terms and interest income is recognized based on the security’s effective interest rate. In order to calculate the effective interest rate, we must project cash flows over the remaining life of each security and make assumptions with regards to interest rates, prepayment rates, the timing and amount of credit losses, estimated call dates and other factors. On at least a quarterly basis, we review and, if appropriate, make adjustments to our cash flow projections based on input and analysis received from external sources, internal models, and our own judgments about interest rates, prepayment rates, the timing and amount of credit losses, and other factors. Changes in cash flows from those originally projected, or from those estimated at the last evaluation, may result in a prospective change in the yield and interest income recognized on these securities or in the recognition of an allowance for credit losses as discussed below. For AFS securities purchased and held at a discount, a portion of the discount may be designated as non-accretable purchase discount (“credit reserve”), based on the cash flows we have projected for the security. The amount designated as credit reserve may be adjusted over time, based on our periodic evaluation of projected cash flows. If the performance of a security with a credit reserve is more favorable than previously forecasted, a portion of the credit reserve may be reallocated to accretable discount and recognized into interest income over time. Conversely, if the performance of a security with a credit reserve is less favorable than forecasted, the amount designated as credit reserve may be increased, or impairment charges and write-downs of such securities to a new cost basis could result. Credit impairments on our available-for-sale securities are recorded in earnings using an allowance for credit losses, with the allowance limited to the amount by which the security's fair value is less than its amortized cost basis. The allowance for credit losses is calculated using a discounted cash flow approach and is measured as the difference between the beneficial interest’s amortized cost and the estimate of cash flows expected to be collected, discounted at the effective interest rate used to accrete the beneficial interest. No allowance is recorded for beneficial interests in an unrealized gain position. Favorable changes in the discounted cash flows will result in a reduction in the allowance for credit losses, if any. Any reduction in allowance for credit losses is recorded in earnings. If the allowance for credit losses has been reduced to zero, the remaining favorable changes are reflected as a prospective increase to the effective interest rate. If we intend to sell or it is more likely than not that we will be required to sell the security before it recovers in value, the entire impairment amount will be recognized in earnings with a corresponding adjustment to the security's amortized cost basis. See Note 9 for further discussion on real estate securities. HEI We invest in HEI from third-party originators and securities collateralized by third-party HEI. We also originate HEI ourselves through our Aspire platform, some or all of which are retained in our Investment Portfolio. Each HEI provides the investor an option to purchase a percentage ownership interest in the underlying residential property upon the occurrence of specified events. The homeowner's obligations under the HEI are secured by the recording of a lien (typically junior liens) against the property in the form of a deed of trust or a mortgage. Our investments in HEI allow us to share in home price appreciation (or depreciation) of the associated property. We have elected to record these investments at fair value and report changes in their fair value in HEI income, net on our consolidated statements of income (loss). In addition, we record HEI held at our consolidated HEI securitization entities at fair value. In accordance with accounting guidance for CFEs, we use the fair value of the ABS issued by these entities (which we determined to be more observable) to determine the fair value of the HEI held at these entities. Changes in fair value of the HEI assets held by these entities and the ABS issued by these entities (including issuance costs and the interest expense component of the ABS issued) are recorded through HEI income, net on our consolidated statements of income (loss).
Other Investments | Servicer Advance Investments Our servicer advance investments are comprised of outstanding servicer advances receivable, the requirement to purchase all future servicer advances made with respect to a specified pool of residential mortgage loans and a fee component of the related MSR. We have elected to record these investments at fair value. We recognize interest income from our servicer advance investments when earned and deemed collectible and record the income as a component of Other interest income in our consolidated statements of income (loss). Our servicer advance investments are marked-to-market on a recurring basis with changes in the fair value reported in Investment fair value changes, net on our consolidated statements of income (loss). See Note 11 for further discussion on our servicer advance investments. Strategic Investments We have made and may make additional strategic investments in companies through our RWT Horizons venture investment strategy or at a corporate level. These investments can take the form of equity or debt and often have conversion features. Depending on the terms of the investments, we may account for these investments under the fair value option or as non-marketable equity securities under the equity method of accounting or the measurement alternative (to the extent they do not have a “readily determinable fair value,” or are not traded in a verifiable public market or are restricted for sale in the public market by a restricted stock legend or otherwise). Investments accounted for under the fair value option are carried at fair value with periodic changes in value recorded through Investment fair value changes, net on our consolidated statements of income (loss). For non-marketable securities, we utilize the equity method of accounting when we are able to exert significant influence over but do not control the activities of the investee. Under the equity method of accounting, we generally elect to record our share of earnings or losses from equity-method investments on a one-quarter lag, based on availability of financial information from investees, and we assess our investments for impairment whenever events or changes in circumstances indicate that the carrying amount of our investment might not be recoverable. Income from equity-method investments is recorded in Other income, net on our consolidated statements of income (loss). Under the measurement alternative, the carrying value of our investment is measured at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. Adjustments are determined primarily based on a market approach as of the transaction date and are recorded as a component of Other income, net on our consolidated statements of income (loss). Excess MSRs Our excess MSR investments represent the right to receive a portion of mortgage servicing cash flows in excess of amounts paid for the underlying mortgage loans to be serviced. As owners of excess MSRs, we are not required to be a licensed servicer, and we are not required to assume any servicing duties, advance obligations or liabilities associated with the loan pool underlying the MSR. We have elected to record these investments at fair value. We recognize income from excess MSRs when it is earned and deemed collectible and record the income as a component of Other interest income in our consolidated statements of income (loss). Changes in fair value are recurring and are reported through our consolidated statements of income (loss) in Investment fair value changes, net. See Note 11 for further discussion on excess MSRs. MSRs We recognize MSRs through the retention of servicing rights associated with residential mortgage loans that we acquired and subsequently transferred to third parties when the transfer meets the GAAP criteria for sale accounting, or through the direct acquisition of MSRs sold by third parties. We contract with licensed sub-servicers to perform servicing functions for loans associated with our MSRs. We have elected the fair value option for all of our MSRs, and they are initially recognized and subsequently carried at their estimated fair values. Servicing fee income from MSRs is recorded on a cash basis when received. Net servicing income and changes in the estimated fair value of MSRs are reported in Other income, net on our consolidated statements of income (loss).
Cash and Cash Equivalents | Cash and cash equivalents include non-restricted cash and highly liquid investments with original maturities of three months or less and money market fund investments which are generally invested in U.S. government securities and are available to us on a daily basis. The Company maintains its cash and cash equivalents with major financial institutions. Accounts at these institutions are guaranteed by the Federal Deposit Insurance Corporation (“FDIC”) up to $250,000 for each bank. The Company is exposed to credit risk for amounts held in excess of the FDIC limit. The Company does not anticipate nonperformance by these institutions
Restricted Cash | Restricted cash primarily includes cash held at our consolidated Servicing Investment entities, and cash associated with our risk-sharing transactions with Fannie Mae and Freddie Mac ("the Agencies"), as well as cash collateral for certain consolidated securitization entities.
Goodwill and Intangible Assets | Significant judgment is required to estimate the fair value of intangible assets and in assigning their estimated useful lives. The fair value estimates are based on available historical information and on future expectations and assumptions we deem reasonable. We generally use an income-based valuation method to estimate the fair value of intangible assets, which discounts expected future cash flows to present value using estimates and assumptions we deem reasonable. Determining the estimated useful lives of intangible assets also requires judgment. Our assessment as to which intangible assets are deemed to have finite or indefinite lives is based on several factors including economic barriers of entry for the acquired business, retention trends, and our operating plans, among other factors. Finite-lived intangible assets are amortized over their estimated useful lives on a straight-line basis and reviewed for impairment if indicators are present. Additionally, useful lives are evaluated each reporting period to determine if revisions to the remaining periods of amortization are warranted. Goodwill is tested for impairment annually or more frequently if indicators of impairment exist. We have elected to make the first day of our fiscal fourth quarter the annual impairment assessment date for goodwill. We first assess qualitative factors to determine whether it is more likely than not that the fair value of the reporting unit is less than its carrying value. If, based on that assessment, we believe it is more likely than not that the fair value of the reporting unit is less than its carrying value, we measure the fair value of the reporting unit and record a goodwill impairment charge for the amount by which a reporting unit's carrying value exceeds its fair value, not to exceed the carrying amount of the goodwill. Any such impairment charges would be recorded through Other expenses on our consolidated statements of income (loss).
Derivative Financial Instruments | Derivative financial instruments we typically utilize include swaps, swaptions, financial futures contracts, and “To Be Announced” (“TBA”) contracts. These derivatives are primarily used to manage interest rate risk associated with our operations. In addition, we enter into certain residential loan purchase commitments (“LPCs”) and interest rate lock commitments ("IRLCs") that are treated as derivatives for financial reporting purposes. All derivative financial instruments are recorded at their estimated fair value on our consolidated balance sheets. Derivatives with positive fair values to us are reported as assets, and derivatives with negative fair values to us are reported as liabilities. We classify each derivative as either (i) a trading instrument (no specific hedging designation for financial reporting purposes) or (ii) a hedge of a forecasted transaction or of the variability of cash flows to be received or paid related to a recognized asset or liability (cash flow hedge). Changes in the fair values of derivatives accounted for as trading instruments, including any associated interest income or expense, are recorded in our consolidated statements of income (loss) through Other income, net if they are used to manage risks associated with our MSR investments, through Mortgage banking activities, net if they are used to manage risks associated with our mortgage banking activities, or through Investment fair value changes, net if they are used to manage risks associated with our investments. Valuation changes related to residential LPCs and IRLCs are included in Mortgage banking activities, net on our consolidated statements of income (loss). Changes in the fair values of derivatives accounted for as cash flow hedges, to the extent they are effective, are recorded in Accumulated other comprehensive (loss) income, a component of equity on our consolidated balance sheets. Interest income or expense, and any ineffectiveness associated with these derivatives, are recorded as a component of net interest income in our consolidated statements of income (loss). We measure the effective portion of cash flow hedges by comparing the change in fair value of the expected future variable cash flows of the derivative hedging instruments with the change in fair value of the expected future variable cash flows of the hedged item. We will discontinue a designated cash flow hedge relationship if (i) we determine that the hedging derivative is no longer expected to be effective in offsetting changes in the cash flows of the designated hedged item; (ii) the derivative expires or is sold, terminated, or exercised; (iii) the derivative is de-designated as a cash flow hedge; or (iv) it is probable that a forecasted transaction associated with the hedged item will not occur by the end of the originally specified time period. To the extent we de-designate or terminate a cash flow hedging relationship and the associated hedged item continues to exist, any unrealized gain or loss of the cash flow hedge at the time of de-designation remains in accumulated other comprehensive income and is amortized using the straight-line method through interest expense over the remaining life of the hedged item. Swaps and Swaptions Interest rate swaps are agreements in which (i) one counterparty exchanges a stream of fixed interest payments for another counterparty’s stream of variable interest cash flows; or (ii) each counterparty exchanges variable interest cash flows that are referenced to different indices. Interest rate swaptions are agreements that provide the owner the right but not the obligation to enter into an underlying interest rate swap with a counterparty in the future. We enter into swaps and swaptions primarily to reduce significant changes in our income or equity caused by interest rate volatility. Certain of these interest rate agreements may be designated as cash flow hedges. Interest Rate Futures Interest rate futures are futures contracts based on U.S. Treasury notes, U.S. dollar-denominated interest rate swaps, or U.S. dollar-denominated interest rate indices. TBA Agreements TBA agreements are forward contracts to purchase mortgage-backed securities that will be issued by a U.S. government sponsored enterprise in the future. We purchase or sell these derivatives to offset - to varying degrees - changes in the values of mortgage products for which we have exposure to interest rate volatility. Loan Purchase Commitments We use the term LPCs to refer to agreements with third-party residential loan originators to purchase residential loans at a future date that qualify as a derivative under GAAP. LPCs are recorded at their estimated fair values on our consolidated balance sheets and changes in fair value are recurring and are reported through our consolidated statements of income (loss) in Mortgage banking activities, net. Interest Rate Lock Commitments IRLCs are agreements we have made with third-party borrowers for business purpose loans that will be originated and held for sale. IRLCs qualify as derivatives under GAAP and are recorded at their estimated fair values on our consolidated balance sheets. Changes in fair value are recurring and are reported through our consolidated statements of income (loss) in Mortgage banking activities, net.
Deferred Tax Assets and Liabilities | Our deferred tax assets/liabilities are generated by temporary differences in GAAP income and taxable income at our taxable REIT subsidiaries. These differences generally reflect differing accounting treatments for GAAP and tax purposes, such as accounting for mortgage servicing rights, employee compensation, security discount and premium amortization, credit losses, asset impairments, certain valuation estimates, goodwill and intangible assets, and net operating losses. As a result of these differences, we may recognize taxable income in periods prior to when we recognize income for GAAP purposes. When this occurs, we pay the tax liability as required and establish a deferred tax asset. As the income is subsequently realized in future periods for GAAP purposes, the deferred tax asset is reduced. We may also recognize GAAP income in periods prior to when we recognize income for tax purposes. When this occurs, we establish a deferred tax liability. As the income is subsequently realized in future periods for tax purposes, the deferred tax liability is reduced. We may also record deferred tax assets/liabilities resulting from differences in GAAP basis and tax basis of assets and liabilities acquired in a business combination at our taxable REIT subsidiaries. These deferred tax assets/liabilities generally do not affect our GAAP income at the time of establishment as the offsetting accounting entry is recorded in GAAP goodwill. They also do not generally affect GAAP income when they are subsequently realized, as the deferred tax provision or benefit resulting from the realization is offset by a corresponding current tax benefit or provision. In assessing the realizability of deferred tax assets, we consider whether it is more likely than not that some portion or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income during the periods in which those temporary differences become deductible. We consider historical and projected future taxable income and capital gains as well as tax planning strategies in making this assessment. We determine the extent to which realization of deferred assets is not assured and establish a valuation allowance accordingly. The estimate of net deferred tax assets could change in future periods to the extent that actual or revised estimates of future taxable income during the carryforward periods change from current expectations.
Other Assets and Other Liabilities | Other assets primarily consists of accrued interest receivable, investment receivable, deferred tax assets, REO, operating lease right-of-use assets, margin receivable, and fixed assets and leasehold improvements. Other liabilities primarily consists of accrued compensation, margin payable, accrued interest payable, payable to non-controlling interests, guarantee obligations, operating lease liabilities and loan repurchase reserves. See Note 13 for further discussion. Accrued Interest Receivable Accrued interest receivable includes interest that is due and payable to us and deemed collectible. Cash interest is generally received within thirty days of recording the receivable. For financial assets where we have elected the fair value option, the associated accrued interest receivable on these assets is measured at fair value. For financial assets where we have not elected the fair value option, the associated accrued interest carrying values approximate fair values. Investment Receivable Investment receivable primarily consists of amounts receivable from third-party servicers related to principal and interest receivable from business purpose loans and fees receivable from servicer advance investments. Margin Receivable and Payable Margin receivable and payable result from margin calls between us and our derivatives, master repurchase agreements, and warehouse facilities counterparties, whereby we or the counterparty were required to post collateral. Agency Risk-Sharing - Other Assets and Liabilities During 2014 and 2015, we entered into various risk-sharing arrangements with Fannie Mae and Freddie Mac. Under these arrangements, we committed to assume the first 1.00% or 2.25% (depending on the arrangement) of losses realized on reference pools of conforming residential mortgage loans that we acquired and then sold to the Agencies. As part of these risk-sharing arrangements, during the 10-year term of our first Fannie Mae arrangement, we receive monthly cash payments from Fannie Mae based on the monthly outstanding unpaid principal balance of the reference pool of loans, and for our Freddie Mac and our subsequent Fannie Mae arrangements, the Agencies charged us a reduced guarantee fee for the reference loans we delivered to them in exchange for mortgage-backed securities, which we then sold. Under these arrangements we are required to pledge assets to the Agencies to collateralize our risk-sharing commitments to them throughout the terms of the arrangements. These pledged assets are held by a third-party custodian for the benefit of the Agencies. To the extent approved losses are incurred, the custodian will transfer collateral to the Agencies. As a result of these transactions, we recorded restricted cash, “pledged collateral” in the other assets line item, and “guarantee obligations” in the other liabilities line item, on our consolidated balance sheets. In addition, for the first Fannie Mae transaction, we recorded a “guarantee asset” in the other assets line item on our consolidated balance sheets. The guarantee obligations represent our commitments to assume losses under these arrangements. We amortize the guarantee obligations over the 10-year terms of the arrangements based primarily on changes in the outstanding unpaid principal balance of loans in the reference pools, with a portion of the liabilities treated as a credit reserve that is not amortized into income. In addition, each period we assess the need for a separate loss allowance related to these arrangements, based on our estimate of credit losses inherent in the reference pools of loans. Income from cash payments received under the first Fannie Mae risk-sharing arrangement and income related to the amortization of the guarantee obligations of all three arrangements are recorded in Other income, net and market valuation changes of the guarantee asset are recorded in Investment fair value changes, net on our consolidated statements of income (loss). Our consolidated balance sheets include assets of the special purpose entities ("SPEs") associated with these risk-sharing arrangements (i.e., the "pledged collateral" referred to above) that can only be used to settle obligations of these SPEs and liabilities of these SPEs for which the creditors of these SPEs (the Agencies) do not have recourse to Redwood Trust, Inc. or its affiliates. At December 31, 2023 and 2022, assets of such SPEs totaled $28 million and $30 million, respectively, and liabilities of such SPEs totaled $6 million and $6 million, respectively. See Note 17 for further discussion on loss contingencies — risk-sharing. REO REO property acquired through, or in lieu of, foreclosure is initially recorded at fair value, and subsequently reported at the lower of its carrying amount or fair value (less estimated cost to sell). Changes in the fair value of an REO property that has a fair value at or below its carrying amount are recorded in Investment fair value changes, net on our consolidated statements of income (loss).
Accrued Interest Payable | Accrued Interest Payable Accrued interest payable includes interest that is due and payable to third parties. Interest is generally paid within one to three months of recording the payable, based upon our remittance requirements, and is paid semi-annually for our convertible and exchangeable debt. For borrowings where we have elected the fair value option, the associated accrued interest on these liabilities is measured at fair value. For financial liabilities where we have not elected the fair value option, the associated accrued interest carrying values approximate fair values.
Leases - Asset and Liabilities | Lease - Asset and Liabilities We record operating lease liabilities and operating lease right-of-use assets on our consolidated balance sheets. Operating lease liabilities are equal to the present value of our remaining lease payments discounted at our incremental borrowing rate and the operating lease right-of-use assets are equal to the operating lease liabilities adjusted for our deferred rent liabilities. As lease payments are made, the operating lease liabilities are reduced to the present value of the remaining lease payments and the operating lease right-of-use assets are reduced by the difference between the lease expense (straight-lined over the lease term) and the theoretical interest expense amount (calculated using the incremental borrowing rate).
Payable to Non-Controlling Interests | Payable to non-controlling interests includes amounts payable to third parties, representing their interest in our consolidated Servicing Investment and HEI securitization entities.
Short-Term Debt | Short-term debt includes borrowings that mature or are payable on demand within one year with various counterparties under master repurchase agreements, warehouse financing facilities, and other forms of borrowings. These borrowings are typically collateralized by cash, loans, HEI, or securities, and in some cases may be unsecured, such as the current portion of long-term debt. If the value (as determined by the applicable counterparty) of the collateral securing those borrowings decreases, we may be subject to margin calls during the period the borrowings are outstanding. In instances where we do not satisfy the margin calls within the required time frame, the counterparty may retain the collateral and pursue any outstanding debt amount from us. Short-term debt also includes non-recourse short-term borrowings used to finance servicer advance investments, and promissory notes.
Asset-Backed Securities Issued | ABS issued represents asset-backed securities issued through the Legacy Sequoia, Sequoia, Freddie Mac K-Series, Freddie Mac SLST, CAFL and HEI securitization entities. Assets at these entities are held in the custody of securitization trustees and are not owned by Redwood. These trustees collect principal and interest payments (less servicing and related fees) from the assets in these entities and make corresponding principal and interest payments to the ABS investors. In accordance with accounting guidance for CFEs, we account for the ABS issued under certain of our consolidated entities at fair value, with periodic changes in fair value recorded in Investment fair value changes, net or HEI income, net (for HEI securitizations) on our consolidated statements of income (loss). We consolidate the assets and liabilities of securitization entities formed in connection with the securitization of CoreVest BPL bridge loans (also referred to as CAFL Bridge). In 2023, we re-securitized subordinate securities we owned in our consolidated Freddie Mac SLST securitization trusts, through the transfer of these financial assets to a re-securitization trust that we sponsored. We account for the ABS issued by two CAFL bridge securitization trusts and the SLST re-securitization trust at amortized cost. We issued a third CAFL Bridge securitization in 2023 and elected to account for the ABS issued from this transaction at fair value.
Long-Term Debt | Recourse Subordinate Securities Financing Facilities Borrowings under our recourse subordinate securities financing facilities are secured by real estate securities and carried at unpaid principal balance net of any unamortized deferred issuance costs. Interest on these facilities is paid monthly. See Note 16 for further discussion on our subordinate securities financing facilities. Non-Recourse BPL Financing Facilities Borrowings under our non-recourse business purpose loan financing facilities are secured by BPL bridge loans and other BPL investments and carried at unpaid principal balance net of any unamortized deferred issuance costs. Interest on these facilities is paid monthly. See Note 16 for further discussion on our non-recourse business purpose loan financing facilities. Recourse BPL Financing Facilities Borrowings under our recourse business purpose loan financing facilities are secured by BPL term and bridge loans and carried at unpaid principal balance net of any unamortized deferred issuance costs. Interest on these facilities is paid monthly. See Note 16 for further discussion on our recourse business purpose loan financing facilities. Convertible Notes Convertible notes include unsecured convertible and exchangeable debt that are carried at their unpaid principal balance net of any unamortized deferred issuance costs. Interest on the notes is payable semiannually until such time the notes mature or are converted or exchanged into shares. If converted or exchanged by a holder, the holder of the notes would receive shares of our common stock. Our convertible notes are initially classified as long-term based on their original maturities, and are reclassified to short-term debt when their remaining term becomes less than one year. Trust Preferred Securities and Subordinated Notes Trust preferred securities and subordinated notes are carried at their unpaid principal balance net of any unamortized deferred issuance costs. This long-term debt is unsecured and interest is paid quarterly until it is redeemed in whole or matures at a future date.
Equity | Accumulated Other Comprehensive Income (Loss) Net unrealized gains and losses on real estate securities available-for-sale and interest rate agreements designated as cash flow hedges are reported as components of Accumulated other comprehensive income on our consolidated statements of changes in stockholders' equity and our consolidated balance sheets. Net unrealized gains and losses on securities and interest rate agreements held by our taxable REIT subsidiaries that are reported in other comprehensive income are adjusted for the effects of taxation and may create deferred tax assets or liabilities. Earnings per Common Share Basic earnings per common share (“EPS”) is computed by dividing net income allocated to common shareholders by the weighted average common shares outstanding. Net income allocated to common shareholders represents net income less income allocated to participating securities (as described herein). Diluted EPS is computed by dividing income allocated to common shareholders by the weighted average common shares outstanding plus amounts representing the dilutive effect of share-based payment awards. In addition, for our convertible and exchangeable debt issued prior to 2022, if the assumed conversion or exchange of convertible or exchangeable debt into common shares is dilutive, diluted EPS is adjusted by adding back the periodic interest expense (net of any tax effects) associated with dilutive convertible or exchangeable debt to net income and adding the shares issued in an assumed conversion or exchange to the diluted weighted average share count. For our convertible debt issued in 2022, if the potential conversion of the debt is dilutive, then the number of shares needed to settle the conversion premium are added to the shares outstanding used to calculate dilutive EPS. The two-class method is an earnings allocation formula under which EPS is calculated for common stock and participating securities according to dividends declared and participating rights in undistributed earnings. Under this method, all earnings (distributed and undistributed) are allocated between participating securities and common shares based on their respective rights to receive dividends or dividend equivalents. GAAP defines vested and unvested share-based payment awards containing non-forfeitable rights to dividends or dividend equivalents as participating securities that are included in computing EPS under the two-class method.
Incentive Plans | In 2023, our shareholders approved an amendment to the 2014 Redwood Trust, Inc. Incentive Plan (“Incentive Plan”) for executive officers, employees, and non-employee directors, which, among other things, increased the number of shares available under the Incentive Plan. The Incentive Plan provides for the grant of restricted stock, deferred stock, deferred stock units, performance-based awards (including performance stock units and cash-settled performance stock units), dividend equivalents, stock payments, restricted stock units, cash-settled restricted and deferred stock units, and other types of awards to eligible participants. Long-term incentive awards granted under the Incentive Plan generally vest over a three- or four-year period. Deferred stock units, restricted stock units, and restricted stock awards (as well as cash-settled restricted and deferred stock units) have attached dividend equivalent rights, resulting in the payment of dividend equivalents each time we pay a common stock dividend. Non-employee directors are also provided annual awards under the Incentive Plan that generally vest immediately. The cost of the awards is generally amortized over the vesting period on a straight-line basis. We have elected to account for forfeitures on employee equity awards as they occur. Employee Stock Purchase Plan In 2021, our shareholders approved an amendment to our previously amended 2002 Redwood Trust, Inc. Employee Stock Purchase Plan (“ESPP”) to increase the number of shares available under the ESPP. The purpose of the ESPP is to give our employees an opportunity to acquire an equity interest in the Company through the purchase of shares of common stock at a discount. The ESPP allows eligible employees to purchase common stock at 85% of its fair value, subject to certain limits. Fair value as defined under the ESPP is the lesser of the closing market price of the common stock on the first day of the calendar year or the last day of the calendar quarter. Executive Deferred Compensation Plan In 2023, our Board of Directors approved an amendment to our 2002 Executive Deferred Compensation Plan (“EDCP”) to increase the number of shares available to non-employee directors to defer certain cash payments and dividends into DSUs. The EDCP allows eligible employees and directors to defer portions of current salary and certain other forms of compensation. The Company matches some deferrals. Compensation deferred under the EDCP is recorded as a liability on our consolidated balance sheets. The EDCP allows for the investment of deferrals in either an interest crediting account or DSUs. 401(k) Plan We offer a tax-qualified 401(k) Plan to all employees for retirement savings. Under this Plan, employees are allowed to defer and invest up to 100% of their cash earnings, subject to the maximum 401(k) Plan contribution limit set forth by the Internal Revenue Service. We match some employee contributions to encourage participation and to provide a retirement planning benefit to employees. Plan matching contributions made by the Company for the years ended December 31, 2023, 2022, and 2021 were $2 million, $2 million, and $1 million, respectively. Vesting of the 401(k) Plan matching contributions is based on the employee’s tenure at the Company, and over time an employee becomes increasingly vested in matching contributions.
Taxes | We have elected to be taxed as a REIT under the Internal Revenue Code and the corresponding provisions of state law. To qualify as a REIT we must distribute at least 90% of our annual REIT taxable income to shareholders (not including taxable income retained in our taxable REIT subsidiaries) within the time frame set forth in the Internal Revenue Code and also meet certain other requirements related to assets, income, and stock ownership. We assess our tax positions for all open tax years and record tax benefits only if tax positions meet a more-likely-than-not threshold in accordance with GAAP guidance on accounting for uncertain tax positions. We classify interest and penalties on material uncertain tax positions as interest expense and general and administrative expenses, respectively, in our consolidated statements of income (loss).
Recent Accounting Pronouncements | In March 2022, the FASB issued ASU 2022-02, "Financial Instruments-Credit Losses (Topic 326), Troubled Debt Restructurings and Vintage Disclosures." ASU 2022-02 addresses areas identified by the FASB as part of its post-implementation review of the credit losses standard (ASU 2016-13) that introduced the current expected credit loss ("CECL") model. The amendments eliminate the accounting guidance for troubled debt restructurings by creditors that have adopted the CECL model and enhance the disclosure requirements for loan refinancings and restructurings made with borrowers experiencing financial difficulty. In addition, the amendments require a public business entity to disclose current-period gross writeoffs for financing receivables and net investment in leases by year of origination in the vintage disclosures. This new guidance was effective for fiscal years beginning after December 31, 2022. We adopted this guidance in the first quarter of 2023, which did not have a material impact on our consolidated financial statements. In March 2022, the FASB issued ASU 2022-01, "Derivatives and Hedging (Topic 815), Fair Value Hedging - Portfolio Layer Method," which will expand companies' abilities to hedge the benchmark interest rate risk of portfolios of financial assets (or beneficial interests) in a fair value hedge. The ASU expands the use of the portfolio layer method (previously referred to as the last-of-layer method) to allow multiple hedges of a single closed portfolio of assets using spot starting, forward starting, and amortizing-notional swaps. The ASU also permits both prepayable and non-prepayable financial assets to be included in the closed portfolio of assets hedged in a portfolio layer hedge. The ASU further requires that basis adjustments not be allocated to individual assets for active portfolio layer method hedges, but rather be maintained on the closed portfolio of assets as a whole. This new guidance was effective for fiscal years beginning after December 31, 2022. We adopted this guidance in the first quarter of 2023, which did not have a material impact on our consolidated financial statements. In December 2022, the FASB issued ASU 2022-06, "Reference Rate Reform (Topic 848) - Deferral of the Sunset Date of Topic 848." This new guidance defers the sunset date of Topic 848 from December 31, 2022, to December 31, 2024, after which entities will no longer be permitted to apply the relief in Topic 848. The objective of the guidance in Topic 848 is to provide temporary relief during the transition period. Through December 31, 2023, we had not elected to apply the optional expedients and exceptions to any of our existing contracts, hedging relationships, or other transactions. At December 31, 2023, we had no remaining LIBOR-indexed financial assets or liabilities. Our bridge loans and trust preferred securities that were previously indexed to LIBOR at June 30, 2023, were transitioned to SOFR indexes in the third quarter of 2023. Other Recent Accounting Pronouncements Pending Adoption In June 2022, the FASB issued ASU 2022-03, “Fair Value Measurement of Equity Securities Subject to Contractual Sale Restrictions.” ASU 2022-03 clarifies that a contractual restriction on the sale of an equity security should not be considered in measuring its fair value and introduces new disclosure requirements for equity securities subject to contractual sale restrictions that are measured at fair value in accordance with Topic 820. The amendments in this update are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Early adoption is permitted. We are evaluating the accounting and disclosure requirements of ASU 2022-03 and we plan to adopt this new guidance by the required date. We do not anticipate that this update will have a material impact on our financial statements. In August 2023, the FASB issued ASU 2023-05, "Business Combinations—Joint Venture Formations (Subtopic 805-60): Recognition and Initial Measurement." ASU 2023-05 requires a joint venture, upon formation, to initially measure its assets and liabilities at fair value. This generally aligns the treatment to be consistent with the guidance for business combinations. Joint venture entities that are private companies may elect to include customer-related intangible assets and non-competition agreements within goodwill and not as separate intangible assets. This new guidance is effective for all joint venture entities with a formation date on or after January 1, 2025, with early adoption permitted. Joint ventures formed prior to the adoption date may elect to apply the new guidance retrospectively back to their original formation date. We are evaluating the accounting and disclosure requirements of ASU 2023-05 and we plan to adopt this new guidance by the required date. We do not anticipate that this update will have a material impact on our financial statements. In November 2023, the FASB issued ASU 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. "ASU 2023-07 expands the breadth and frequency of segment disclosures by requiring disclosures of significant segment expenses regularly provided to the Chief Operating Decision Maker ("CODM") and included within the reported measures of a segment's profit or loss. Other disclosure requirements involve the amount and composition of other segment items and how the CODM uses the reported measures of profit or loss to assess segment performance and to decide how to allocate resources. The ASU does not change how a public entity identifies its operating segments, aggregates those operating segments or applies the quantitative thresholds to determine its reportable segments. This new guidance is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. We are evaluating the accounting and disclosure requirements of ASU 2023-07 and we plan to adopt this new guidance by the required date. In December 2023, the FASB issued ASU 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures." ASU 2023-09 improves the transparency of income tax disclosures by requiring consistent categories and greater disaggregation of information in the effective tax rate reconciliation disclosures. Additionally, income taxes paid are required to be disaggregated by jurisdiction, along with other amendments to enhance the effectiveness of income tax disclosures. This new guidance is effective for annual periods beginning after December 15, 2023. Early adoption is permitted and upon adoption, the guidance can be adopted on a prospective or retrospective basis. We are evaluating the accounting and disclosure requirements of ASU 2023-07 and we plan to adopt this new guidance by the required date.
Balance Sheet Netting | Certain of our derivatives and short-term debt are subject to master netting arrangements or similar agreements. Under GAAP, in certain circumstances we may elect to present certain financial assets, liabilities and related collateral subject to master netting arrangements in a net position on our consolidated balance sheets. However, we do not report any of these financial assets or liabilities on a net basis, and instead present them on a gross basis on our consolidated balance sheets.

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