Summary of Significant Accounting Policies	3 Months Ended
Mar. 31, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Fannie Mae is a leading source of financing for mortgages in the United States. We are a shareholder-owned corporation organized as a government-sponsored entity (“GSE”) and existing under the Federal National Mortgage Association Charter Act (the “Charter Act” or our “charter”). Our charter is an act of Congress, and we have a purpose under that charter to provide liquidity and stability to the residential mortgage market and to promote access to mortgage credit. Our regulators include the Federal Housing Finance Agency (“FHFA”), the U.S. Department of Housing and Urban Development (“HUD”), the U.S. Securities and Exchange Commission (“SEC”) and the U.S. Department of the Treasury (“Treasury”). The U.S. government does not guarantee our securities or other obligations. We have been under conservatorship, with FHFA acting as conservator, since September 6, 2008. See below and “Note 1, Summary of Significant Accounting Policies” in our annual report on Form 10-K for the year ended December 31, 2021 (“2021 Form 10-K”) for additional information on our conservatorship and the impact of U.S. government support of our business. The unaudited interim condensed consolidated financial statements as of and for the three months ended March 31, 2022 and related notes should be read in conjunction with our audited consolidated financial statements and related notes included in our 2021 Form 10-K. Basis of Presentation The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information and with the SEC’s instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and note disclosures required by GAAP for complete consolidated financial statements. In the opinion of management, all adjustments of a normal recurring nature considered necessary for a fair presentation have been included. The accompanying condensed consolidated financial statements include our accounts as well as the accounts of other entities in which we have a controlling financial interest. All intercompany accounts and transactions have been eliminated. Results for the three months ended March 31, 2022 may not necessarily be indicative of the results for the year ending December 31, 2022. Use of Estimates Preparing condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect our reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the dates of our condensed consolidated financial statements, as well as our reported amounts of revenues and expenses during the reporting periods. Management has made significant estimates in a variety of areas including, but not limited to, the allowance for loan losses. Actual results could be different from these estimates. Conservatorship On September 7, 2008, the Secretary of the Treasury and the Director of FHFA announced several actions taken by Treasury and FHFA regarding Fannie Mae, which included: (1) placing us in conservatorship, with FHFA acting as our conservator, and (2) the execution of a senior preferred stock purchase agreement by our conservator, on our behalf, and Treasury, pursuant to which we issued to Treasury both senior preferred stock and a warrant to purchase common stock. Under the Federal Housing Enterprises Financial Safety and Soundness Act of 1992, as amended, including by the Housing and Economic Recovery Act of 2008 (together, the “GSE Act”), the conservator immediately succeeded to (1) all rights, titles, powers and privileges of Fannie Mae, and of any stockholder, officer or director of Fannie Mae with respect to Fannie Mae and its assets, and (2) title to the books, records and assets of any other legal custodian of Fannie Mae. The conservator subsequently issued an order that provided for our Board of Directors to exercise specified functions and authorities. The conservator also provided instructions regarding matters for which conservator decision or notification is required. The conservator retains the authority to amend or withdraw its order and instructions at any time. The conservatorship has no specified termination date and there continues to be significant uncertainty regarding our future, including how long we will continue to exist in our current form, the extent of our role in the market, the level of government support of our business, how long we will be in conservatorship, what form we will have and what ownership interest, if any, our current common and preferred stockholders will hold in us after the conservatorship is terminated and whether we will continue to exist following conservatorship. Under the GSE Act, FHFA must place us into receivership if the Director of FHFA makes a written determination that our assets are less than our obligations or if we have not been paying our debts, in either case, for a period of 60 days. In addition, the Director of FHFA may place us into receivership at the Director’s discretion at any time for other reasons set forth in the GSE Act, including if we are critically undercapitalized or if we are undercapitalized and have no reasonable prospect of becoming adequately capitalized. Should we be placed into receivership, different assumptions would be required to determine the carrying value of our assets, which would lead to substantially different financial results. Treasury has made a commitment under the senior preferred stock purchase agreement to provide funding to us under certain circumstances if we have a net worth deficit. We are not aware of any plans of FHFA (1) to fundamentally change our business model, or (2) to reduce the aggregate amount available to or held by the company under our equity structure, which includes the senior preferred stock purchase agreement. Senior Preferred Stock Purchase Agreement and Senior Preferred Stock We discuss more fully our senior preferred stock and the terms of the senior preferred stock purchase agreement, as amended, including Treasury’s funding commitment, in “Note 11, Equity” in our 2021 Form 10-K. Treasury has made a commitment under the senior preferred stock purchase agreement to provide funding to us under certain circumstances if we have a net worth deficit. Pursuant to the senior preferred stock purchase agreement, we have received a total of $119.8 billion from Treasury as of March 31, 2022, and the amount of remaining funding available to us under the agreement is $113.9 billion. We have not received any funding from Treasury under this commitment since the first quarter of 2018. We had positive net worth of $51.8 billion as of March 31, 2022. The dividend provisions of the senior preferred stock permit us to retain increases in our net worth until our net worth exceeds the amount of adjusted total capital necessary for us to meet the capital requirements and buffers under the enterprise regulatory capital framework established by FHFA. The aggregate liquidation preference of the senior preferred stock increased to $168.9 billion as of March 31, 2022 and will further increase to $173.3 billion as of June 30, 2022, due to the $4.4 billion increase in our net worth in the first quarter of 2022. Related Parties Because Treasury holds a warrant to purchase shares of Fannie Mae common stock equal to 79.9% of the total number of shares of Fannie Mae common stock, we and Treasury are deemed related parties. FHFA’s control of both Fannie Mae and Freddie Mac has caused Fannie Mae, FHFA and Freddie Mac to be deemed related parties. Additionally, Fannie Mae and Freddie Mac jointly own Common Securitization Solutions, LLC (“CSS”), a limited liability company created to operate a common securitization platform; as a result, CSS is deemed a related party. As a part of our joint ownership, Fannie Mae, Freddie Mac and CSS are parties to a limited liability company agreement that sets forth the overall framework for the joint venture, including Fannie Mae’s and Freddie Mac’s rights and responsibilities as members of CSS. Fannie Mae, Freddie Mac and CSS are also parties to a customer services agreement that sets forth the terms under which CSS provides mortgage securitization services to us and Freddie Mac, including the operation of the common securitization platform, as well as an administrative services agreement. CSS operates as a separate company from us and Freddie Mac, with all funding and limited administrative support services and other resources provided to it by us and Freddie Mac. In the ordinary course of business, Fannie Mae may purchase and sell securities issued by Treasury and Freddie Mac. These transactions occur on the same terms as those prevailing at the time for comparable transactions with unrelated parties. Some of the structured securities we issue are backed in whole or in part by Freddie Mac securities. Fannie Mae and Freddie Mac each have agreed to indemnify the other party for losses caused by: its failure to meet its payment or other specified obligations under the trust agreements pursuant to which the underlying resecuritized securities were issued; its failure to meet its obligations under the customer services agreement; its violations of laws; or with respect to material misstatements or omissions in offering documents, ongoing disclosures and related materials relating to the underlying resecuritized securities. Additionally, we make regular income tax payments to and receive tax refunds from the Internal Revenue Service (“IRS”), a bureau of Treasury. Transactions with Treasury Our administrative expenses were reduced by $4 million for the three months ended March 31, 2022 and 2021, due to reimbursements from Treasury and Freddie Mac for expenses incurred as program administrator for Treasury’s Home Affordable Modification Program and other initiatives under Treasury’s Making Home Affordable Program. In December 2011, Congress enacted the Temporary Payroll Cut Continuation Act of 2011 (“TCCA”) which, among other provisions, required that we increase our single-family guaranty fees by at least 10 basis points and remit this increase to Treasury. To meet our obligations under the TCCA and at the direction of FHFA, we increased the guaranty fee on all single-family residential mortgages delivered to us by 10 basis points effective April 1, 2012. The resulting fee revenue and expense are recorded in “Interest income: Mortgage loans” and “TCCA fees,” respectively, in our condensed consolidated statements of operations and comprehensive income. In 2020, FHFA provided guidance that we are not required to accrue or remit TCCA fees to Treasury with respect to loans backing MBS trusts that have been delinquent for four months or longer. Once payments on such loans resume, we will resume accrual and remittance to Treasury of the associated TCCA fees on the loans. In November 2021, the Infrastructure Investment and Jobs Act was enacted, which extended to October 1, 2032 our obligation under the TCCA to collect 10 basis points in guaranty fees on single-family residential mortgages delivered to us and pay the associated revenue to Treasury. In January 2022, FHFA advised us to continue to pay these TCCA fees to Treasury with respect to all single-family loans acquired by us before October 1, 2032, and to continue to remit these amounts to Treasury on and after October 1, 2032 with respect to loans we acquired before this date until those loans are paid off or otherwise liquidated. We recognized $824 million and $731 million in TCCA fees during the three months ended March 31, 2022 and 2021, respectively, of which $824 million had not been remitted to Treasury as of March 31, 2022. The GSE Act requires us to set aside certain funding obligations, a portion of which is attributable to Treasury’s Capital Magnet Fund. These funding obligations, recognized in “Other expenses, net” in our condensed consolidated statements of operations and comprehensive income, are measured as the product of 4.2 basis points and the unpaid principal balance of our total new business purchases for the respective period, with 35% of this amount payable to Treasury’s Capital Magnet Fund. We recognized a total of $38 million and $62 million for the three months ended March 31, 2022 and 2021, respectively, in “Other expenses, net” in connection with Treasury’s Capital Magnet Fund, of which $38 million has not been remitted as of March 31, 2022. Transactions with FHFA The GSE Act authorizes FHFA to establish an annual assessment for regulated entities, including Fannie Mae, which is payable on a semi-annual basis (April and October), for FHFA’s costs and expenses, as well as to maintain FHFA’s working capital. We recognized FHFA assessment fees, which are recorded in “Administrative expenses” in our condensed consolidated statements of operations and comprehensive income, of $32 million and $37 million for the three months ended March 31, 2022 and 2021, respectively. Transactions with CSS and Freddie Mac We contributed capital to CSS, the company we jointly own with Freddie Mac, of $22 million and $27 million for the three months ended March 31, 2022 and 2021, respectively. Earnings per Share Earnings per share (“EPS”) is presented for basic and diluted EPS. We compute basic EPS by dividing net income attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. However, as a result of our conservatorship status and the terms of the senior preferred stock, no amounts would be available to distribute as dividends to common or preferred stockholders (other than to Treasury as the holder of the senior preferred stock). Net income attributable to common stockholders excludes amounts attributable to the senior preferred stock. Weighted average common shares include 4.7 billion shares for the periods ended March 31, 2022 and 2021 that would have been issued upon the full exercise of the warrant issued to Treasury from the date the warrant was issued through March 31, 2022 and 2021. The calculation of diluted EPS includes all the components of basic earnings per share, plus the dilutive effect of common stock equivalents such as convertible securities and stock options. Weighted average shares outstanding is increased to include the number of additional common shares that would have been outstanding if the dilutive potential common shares had been issued. For the three months ended March 31, 2022 and March 31, 2021, our diluted EPS weighted-average shares outstanding includes 26 million shares issuable upon the conversion of convertible preferred stock. New Accounting Guidance Adoption of ASU 2022-02 The Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2022-02, Financial Instruments – Credit Losses (Topic 326) Troubled Debt Restructurings and Vintage Disclosures (“ASU 2022-02”) in March 2022. The amendments in ASU 2022-02 eliminate the accounting guidance for troubled debt restructurings (“TDRs”) by creditors while enhancing disclosure requirements for certain loan restructurings by creditors when a borrower is experiencing financial difficulty. Specifically, rather than applying the recognition and measurement guidance for TDRs, an entity would apply the loan refinancing and restructuring guidance to determine whether a modification or other form of restructuring results in a new loan or a continuation of an existing loan. Additionally, the amendments in this ASU require that an entity disclose current-period gross write-offs by year of origination for financing receivables and net investments in leases in the existing vintage disclosures. The ASU is effective for fiscal years beginning after December 15, 2022, for creditors that have adopted the amendments in Accounting Standards Update 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. Early adoption is permitted in any interim period and such election may be made individually to adopt the guidance related to TDRs, including related disclosures, and the presentation of gross write-offs in the vintage disclosure. ASU 2022-02 requires prospective transition for the disclosures related to loan restructurings for borrowers experiencing financial difficulty and the presentation of gross write-offs in the vintage disclosures. The guidance related to the recognition and measurement of TDRs may be adopted on a prospective or modified retrospective transition method. We elected to early adopt the guidance related to the elimination of the recognition and measurement of TDRs and the enhancement of disclosures for loan restructurings for borrowers experiencing financial difficulty as of January 1, 2022, using the prospective transition method. As of our adoption date, all restructurings, including restructurings for borrowers experiencing financial difficulty, are evaluated to determine whether they result in a new loan or a continuation of an existing loan. Loan restructurings for borrowers experiencing financial difficulty are generally accounted for as a continuation of the existing loan as the terms of the restructured loans are typically not at market rates. At adoption of this guidance on January 1, 2022, there was no material impact on our financial statements. When a single-family loan is restructured under ASU 2022-02, we continue to measure impairment on the loan using a discounted cash flow approach that utilizes a prepayment-adjusted discount rate that is based on the loan’s restructured terms. Under the TDR accounting model, we used the discount rate that was in effect prior to the restructuring to measure impairment. Using the interest rate that was in effect prior to the restructuring resulted in the recognition, in the allowance for loan losses, of the economic concession that we granted to borrowers as part of the loan restructuring. Using a post-restructuring interest rate does not result in the recognition of an economic concession in the allowance for loan losses. As we have elected a prospective transition, the economic concession on a loan that was previously restructured and accounted for as a TDR will continue to be measured in our allowance for loan losses using the discount rate that was in effect prior to the restructuring and the economic concession may increase or decrease as we update our cash flow assumptions related to the loan’s expected life. Further, the component of the allowance for loan losses representing economic concessions will decrease as the borrower makes payments in accordance with the restructured terms of the mortgage loan and as the loan is sold, liquidated, or subsequently restructured. In general, the accounting for restructurings made to borrowers experiencing financial difficulty upon adoption of the ASU is consistent with the accounting that we applied to troubled debt restructurings under section 4013 of the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”), and the Consolidated Appropriations Act of 2021, which provided temporary relief from the accounting and reporting requirements for certain troubled debt restructurings related to COVID-19 beginning March 2020 through January 1, 2022. We plan to adopt the disclosure guidance related to the presentation of gross write-offs by year of origination in our vintage disclosures upon the effective date of ASU 2022-02, January 1, 2023. We do not expect the adoption of the guidance requiring gross write-offs by year of origination in our vintage disclosures to have a material impact on our financial statements. Fair Value Hedging - Portfolio Layer Method On March 28, 2022, the FASB issued ASU 2022-01, Fair Value Hedging - Portfolio Layer Method, which clarifies the guidance on fair value hedge accounting of interest rate risk portfolios of financial assets. The ASU expands the scope of the current last-of-layer method to allow entities to apply this method, renamed the portfolio layer method, to non-prepayable financial assets and to designate multiple hedge relationships within a single closed portfolio of financial assets. Additionally, the ASU clarifies that basis adjustments related to existing portfolio layer hedge relationships should not be considered when measuring credit losses on the financial assets included in the closed portfolio. Further, the ASU clarifies that any reversal of fair value hedge basis adjustments associated with an actual breach should be recognized in interest income immediately.The ASU is effective for public business entities for fiscal years beginning after December 15, 2022, and interim periods within those years. We plan to adopt this guidance effective January 1, 2023. The adoption of this guidance is not expected to have a material impact on our financial statements.

Fannie Mae is a leading source of financing for mortgages in the United States. We are a shareholder-owned corporation organized as a government-sponsored entity (“GSE”) and existing under the Federal National Mortgage Association Charter Act (the “Charter Act” or our “charter”). Our charter is an act of Congress, and we have a purpose under that charter to provide liquidity and stability to the residential mortgage market and to promote access to mortgage credit. Our regulators include the Federal Housing Finance Agency (“FHFA”), the U.S. Department of Housing and Urban Development (“HUD”), the U.S. Securities and Exchange Commission (“SEC”) and the U.S. Department of the Treasury (“Treasury”). The U.S. government does not guarantee our securities or other obligations.

We have been under conservatorship, with FHFA acting as conservator, since September 6, 2008. See below and “Note 1, Summary of Significant Accounting Policies” in our annual report on Form 10-K for the year ended December 31, 2021 (“2021 Form 10-K”) for additional information on our conservatorship and the impact of U.S. government support of our business.

The accompanying unaudited interim condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information and with the SEC’s instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and note disclosures required by GAAP for complete consolidated financial statements. In the opinion of management, all adjustments of a normal recurring nature considered necessary for a fair presentation have been included. The accompanying condensed consolidated financial statements include our accounts as well as the accounts of other entities in which we have a controlling financial interest. All intercompany accounts and transactions have been eliminated. Results for the three months ended March 31, 2022 may not necessarily be indicative of the results for the year ending December 31, 2022.

Preparing condensed consolidated financial statements in accordance with GAAP requires management to make estimates and assumptions that affect our reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the dates of our condensed consolidated financial statements, as well as our reported amounts of revenues and expenses during the reporting periods. Management has made significant estimates in a variety of areas including, but not limited to, the allowance for loan losses. Actual results could be different from these estimates.

On September 7, 2008, the Secretary of the Treasury and the Director of FHFA announced several actions taken by Treasury and FHFA regarding Fannie Mae, which included: (1) placing us in conservatorship, with FHFA acting as our conservator, and (2) the execution of a senior preferred stock purchase agreement by our conservator, on our behalf, and Treasury, pursuant to which we issued to Treasury both senior preferred stock and a warrant to purchase common stock.

Under the Federal Housing Enterprises Financial Safety and Soundness Act of 1992, as amended, including by the Housing and Economic Recovery Act of 2008 (together, the “GSE Act”), the conservator immediately succeeded to (1) all rights, titles, powers and privileges of Fannie Mae, and of any stockholder, officer or director of Fannie Mae with respect to Fannie Mae and its assets, and (2) title to the books, records and assets of any other legal custodian of Fannie Mae. The conservator subsequently issued an order that provided for our Board of Directors to exercise specified functions and authorities. The conservator also provided instructions regarding matters for which conservator

The conservatorship has no specified termination date and there continues to be significant uncertainty regarding our future, including how long we will continue to exist in our current form, the extent of our role in the market, the level of government support of our business, how long we will be in conservatorship, what form we will have and what ownership interest, if any, our current common and preferred stockholders will hold in us after the conservatorship is terminated and whether we will continue to exist following conservatorship. Under the GSE Act, FHFA must place us into receivership if the Director of FHFA makes a written determination that our assets are less than our obligations or if we have not been paying our debts, in either case, for a period of 60 days. In addition, the Director of FHFA may place us into receivership at the Director’s discretion at any time for other reasons set forth in the GSE Act, including if we are critically undercapitalized or if we are undercapitalized and have no reasonable prospect of becoming adequately capitalized. Should we be placed into receivership, different assumptions would be required to determine the carrying value of our assets, which would lead to substantially different financial results. Treasury has made a commitment under the senior preferred stock purchase agreement to provide funding to us under certain circumstances if we have a net worth deficit. We are not aware of any plans of FHFA (1) to fundamentally change our business model, or (2) to reduce the aggregate amount available to or held by the company under our equity structure, which includes the senior preferred stock purchase agreement.

Treasury has made a commitment under the senior preferred stock purchase agreement to provide funding to us under certain circumstances if we have a net worth deficit. Pursuant to the senior preferred stock purchase agreement, we have received a total of $119.8 billion from Treasury as of March 31, 2022, and the amount of remaining funding available to us under the agreement is $113.9 billion. We have not received any funding from Treasury under this commitment since the first quarter of 2018. We had positive net worth of $51.8 billion as of March 31, 2022.

FHFA’s control of both Fannie Mae and Freddie Mac has caused Fannie Mae, FHFA and Freddie Mac to be deemed related parties. Additionally, Fannie Mae and Freddie Mac jointly own Common Securitization Solutions, LLC (“CSS”), a limited liability company created to operate a common securitization platform; as a result, CSS is deemed a related party. As a part of our joint ownership, Fannie Mae, Freddie Mac and CSS are parties to a limited liability company agreement that sets forth the overall framework for the joint venture, including Fannie Mae’s and Freddie Mac’s rights and responsibilities as members of CSS. Fannie Mae, Freddie Mac and CSS are also parties to a customer services agreement that sets forth the terms under which CSS provides mortgage securitization services to us and Freddie Mac, including the operation of the common securitization platform, as well as an administrative services agreement. CSS operates as a separate company from us and Freddie Mac, with all funding and limited administrative support services and other resources provided to it by us and Freddie Mac.

In the ordinary course of business, Fannie Mae may purchase and sell securities issued by Treasury and Freddie Mac. These transactions occur on the same terms as those prevailing at the time for comparable transactions with unrelated parties. Some of the structured securities we issue are backed in whole or in part by Freddie Mac securities. Fannie Mae and Freddie Mac each have agreed to indemnify the other party for losses caused by: its failure to meet its payment or other specified obligations under the trust agreements pursuant to which the underlying resecuritized securities were issued; its failure to meet its obligations under the customer services agreement; its violations of laws; or with respect to material misstatements or omissions in offering documents, ongoing disclosures and related materials

In December 2011, Congress enacted the Temporary Payroll Cut Continuation Act of 2011 (“TCCA”) which, among other provisions, required that we increase our single-family guaranty fees by at least 10 basis points and remit this increase to Treasury. To meet our obligations under the TCCA and at the direction of FHFA, we increased the guaranty fee on all single-family residential mortgages delivered to us by 10 basis points effective April 1, 2012. The resulting fee revenue and expense are recorded in “Interest income: Mortgage loans” and “TCCA fees,” respectively, in our condensed consolidated statements of operations and comprehensive income.

In November 2021, the Infrastructure Investment and Jobs Act was enacted, which extended to October 1, 2032 our obligation under the TCCA to collect 10 basis points in guaranty fees on single-family residential mortgages delivered to us and pay the associated revenue to Treasury. In January 2022, FHFA advised us to continue to pay these TCCA fees to Treasury with respect to all single-family loans acquired by us before October 1, 2032, and to continue to remit these amounts to Treasury on and after October 1, 2032 with respect to loans we acquired before this date until those loans are paid off or otherwise liquidated.

The GSE Act requires us to set aside certain funding obligations, a portion of which is attributable to Treasury’s Capital Magnet Fund. These funding obligations, recognized in “Other expenses, net” in our condensed consolidated statements of operations and comprehensive income, are measured as the product of 4.2 basis points and the unpaid principal balance of our total new business purchases for the respective period, with 35% of this amount payable to Treasury’s Capital Magnet Fund. We recognized a total of $38 million and $62 million for the three months ended March 31, 2022 and 2021, respectively, in “Other expenses, net” in connection with Treasury’s Capital Magnet Fund, of which $38 million has not been remitted as of March 31, 2022.

The GSE Act authorizes FHFA to establish an annual assessment for regulated entities, including Fannie Mae, which is payable on a semi-annual basis (April and October), for FHFA’s costs and expenses, as well as to maintain FHFA’s working capital. We recognized FHFA assessment fees, which are recorded in “Administrative expenses” in our condensed consolidated statements of operations and comprehensive income, of $32 million and $37 million for the three months ended March 31, 2022 and 2021, respectively.

Earnings per share (“EPS”) is presented for basic and diluted EPS. We compute basic EPS by dividing net income attributable to common stockholders by the weighted-average number of shares of common stock outstanding during the period. However, as a result of our conservatorship status and the terms of the senior preferred stock, no amounts would be available to distribute as dividends to common or preferred stockholders (other than to Treasury as the holder of the senior preferred stock). Net income attributable to common stockholders excludes amounts attributable to the senior preferred stock. Weighted average common shares include 4.7 billion shares for the periods ended March 31, 2022 and 2021 that would have been issued upon the full exercise of the warrant issued to Treasury from the date the warrant was issued through March 31, 2022 and 2021.

The calculation of diluted EPS includes all the components of basic earnings per share, plus the dilutive effect of common stock equivalents such as convertible securities and stock options. Weighted average shares outstanding is increased to include the number of additional common shares that would have been outstanding if the dilutive potential common shares had been issued. For the three months ended March 31, 2022 and March 31, 2021, our diluted EPS

The Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2022-02, Financial Instruments – Credit Losses (Topic 326) Troubled Debt Restructurings and Vintage Disclosures (“ASU 2022-02”) in March 2022. The amendments in ASU 2022-02 eliminate the accounting guidance for troubled debt restructurings (“TDRs”) by creditors while enhancing disclosure requirements for certain loan restructurings by creditors when a borrower is experiencing financial difficulty. Specifically, rather than applying the recognition and measurement guidance for TDRs, an entity would apply the loan refinancing and restructuring guidance to determine whether a modification or other form of restructuring results in a new loan or a continuation of an existing loan.

The ASU is effective for fiscal years beginning after December 15, 2022, for creditors that have adopted the amendments in Accounting Standards Update 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. Early adoption is permitted in any interim period and such election may be made individually to adopt the guidance related to TDRs, including related disclosures, and the presentation of gross write-offs in the vintage disclosure. ASU 2022-02 requires prospective transition for the disclosures related to loan restructurings for borrowers experiencing financial difficulty and the presentation of gross write-offs in the vintage disclosures. The guidance related to the recognition and measurement of TDRs may be adopted on a prospective or modified retrospective transition method.

We elected to early adopt the guidance related to the elimination of the recognition and measurement of TDRs and the enhancement of disclosures for loan restructurings for borrowers experiencing financial difficulty as of January 1, 2022, using the prospective transition method. As of our adoption date, all restructurings, including restructurings for borrowers experiencing financial difficulty, are evaluated to determine whether they result in a new loan or a continuation of an existing loan. Loan restructurings for borrowers experiencing financial difficulty are generally accounted for as a continuation of the existing loan as the terms of the restructured loans are typically not at market rates. At adoption of this guidance on January 1, 2022, there was no material impact on our financial statements.

When a single-family loan is restructured under ASU 2022-02, we continue to measure impairment on the loan using a discounted cash flow approach that utilizes a prepayment-adjusted discount rate that is based on the loan’s restructured terms. Under the TDR accounting model, we used the discount rate that was in effect prior to the restructuring to measure impairment. Using the interest rate that was in effect prior to the restructuring resulted in the recognition, in the allowance for loan losses, of the economic concession that we granted to borrowers as part of the loan restructuring. Using a post-restructuring interest rate does not result in the recognition of an economic concession in the allowance for loan losses.

As we have elected a prospective transition, the economic concession on a loan that was previously restructured and accounted for as a TDR will continue to be measured in our allowance for loan losses using the discount rate that was in effect prior to the restructuring and the economic concession may increase or decrease as we update our cash flow assumptions related to the loan’s expected life. Further, the component of the allowance for loan losses representing economic concessions will decrease as the borrower makes payments in accordance with the restructured terms of the mortgage loan and as the loan is sold, liquidated, or subsequently restructured.

In general, the accounting for restructurings made to borrowers experiencing financial difficulty upon adoption of the ASU is consistent with the accounting that we applied to troubled debt restructurings under section 4013 of the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”), and the Consolidated Appropriations Act of 2021, which provided temporary relief from the accounting and reporting requirements for certain troubled debt restructurings related to COVID-19 beginning March 2020 through January 1, 2022.

We plan to adopt the disclosure guidance related to the presentation of gross write-offs by year of origination in our vintage disclosures upon the effective date of ASU 2022-02, January 1, 2023. We do not expect the adoption of the guidance requiring gross write-offs by year of origination in our vintage disclosures to have a material impact on our financial statements.