Basis of Presentation	9 Months Ended
Basis of Presentation	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	The accompanying unaudited consolidated financial statements include BayFirst Financial Corp. and its wholly owned subsidiary, First Home Bank, together referred to as “the Company”. These unaudited consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles followed within the financial services industry for interim financial information and Article 8 of Regulation S-X. Accordingly, they do not include all of the information or notes required for complete financial statements. The Company principally operates in two business segments, Banking and Residential Mortgage Lending. In the opinion of management, all adjustments, consisting of normal and recurring items, considered necessary for a fair presentation of the consolidated financial statements for the interim periods have been included. All significant intercompany accounts and transactions have been eliminated in consolidation. Certain amounts reported in prior periods have been reclassified to conform to current year presentation. These reclassifications did not have a material effect on previously reported net income, shareholders’ equity or cash flows. Operating results for the nine month period ended September 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021. These statements should be read in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2020. The Company’s significant accounting policies are described in Note 1 of the Notes to Consolidated Financial Statements for the year ended December 31, 2020 in the Company’s Form S-1. There were no new accounting policies or changes to existing policies adopted during the first nine months of 2021 which had a significant effect on the Company’s results of operations or statement of financial condition. For interim reporting purposes, the Company follows the same basic accounting policies and considers each interim period as an integral part of an annual period. Effective May 10, 2021, the Company effected a three-for-two stock split. All share amounts and per share financial data contained in these financial statements related to periods prior and subsequent to this stock split have been adjusted to reflect the split. Use of Estimates: To prepare financial statements in conformity with GAAP, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. The most significant estimates relate to the allowance for loan losses, SBA loan servicing rights, and fair value of residential loans held for sale and residential mortgage derivatives. Emerging Growth Company Status: The Company is an "emerging growth company," as defined in the JOBS Act, through December 31, 2026. Section 107 of the JOBS Act provides that an emerging growth company can take advantage of an extended transition period when complying with new or revised accounting standards. In other words, an emerging growth company can delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We have elected to take advantage of this extended transition period, which means these financial statements, as well as financial statements we file in the future for as long as we remain an emerging growth company, will be subject to all new or revised accounting standards generally applicable to private companies. Contingencies: Due to the nature of their activities, the Company and its subsidiary are at times engaged in various legal proceedings that arise in the course of normal business, some of which were outstanding as of September 30, 2021. Although the ultimate outcome of all claims and lawsuits outstanding as of September 30, 2021 cannot be ascertained at this time, it is the opinion of management that these matters, when resolved, will not have a material adverse effect on the Company’s results of operations or financial condition. New Accounting Standards Not Yet Adopted: Allowance for credit losses: In June 2016, the FASB issued ASU No. 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”). This new guidance was issued to replace the incurred loss model for loans and other financial assets with an expected loss model, which is referred to as the CECL model. The CECL model is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables and debt securities held to maturity. It also applies to off-balance sheet credit exposures not accounted for as insurance (i.e., loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in certain leases recognized by a lessor. In addition, the amendments in ASU 2016-13 require credit losses on securities available for sale to be presented as a valuation allowance rather than as a direct write-down thereon. The amendments in this ASU are effective for the Company for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. Early adoption is permitted; however, the Company has elected to adopt new or revised accounting standards using the delayed effective dates applicable to Emerging Growth Companies. Management is in the process of evaluating the impact of adoption of this ASU on its Consolidated Financial Statements, processes, and controls and is not currently able to reasonably estimate the impact of adoption on the Company’s consolidated financial position, results of operations, or cash flows; however, adoption is likely to lead to significant changes in accounting policies related to, and the methods employed in estimating, the allowance for credit losses. It is possible that the impact will be material to the Company’s consolidated financial position and results of operations. To date, the Company has established a CECL steering committee, has developed an implementation plan, and is implementing software to house and maintain the CECL model.