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IRS roundup: February 9 – February 17, 2026

by , and | Feb 24, 2026 | , , ,

Check out our summary of significant Internal Revenue Service (IRS) guidance and relevant tax matters for February 9, 2026 – February 17, 2026.

IRS guidance

February 9, 2026: The IRS issued Revenue Procedure 2026-13, providing discount factors for insurance companies to compute Section 846 discounted unpaid losses and recoverable Section 832 discounted estimated salvage for the 2025 accident year. This revenue procedure also provides discount factors to be used in tax years beginning in 2025 for losses incurred in the 2024 accident year and earlier accident years. Discount factors for tax years prior to 2025 were previously provided in Revenue Procedure 2025-15 and Revenue Procedure 2023-10.

February 12, 2026: The IRS issued Notice 2026-15, describing interim guidance on restrictions for certain energy credits related to the status of, and sourcing from, a prohibited foreign entity (PFE). These restrictions were enacted by Public Law 119- 21, 139 Stat. 72 (July 4, 2025) and provide:

  • Descriptions of rules the US Department of the Treasury (Treasury) and the IRS intend to provide in proposed regulations regarding material assistance from a PFE.
  • Descriptions of the Sections 45X, 45Y, and 48E interim safe harbor guidance for determining a qualified facility’s, energy storage technology’s, or eligible component’s material assistance cost ratio related to determining whether there was material assistance from a PFE.
  • PFE restrictions that the Treasury and the IRS will include in forthcoming proposed regulations.
  • A glossary of defined terms, a request for comments, and guidance on substantiation and taxpayer ability to rely on guidance provided in Sections 3 – 5 of the notice.

February 17, 2026: The IRS released Internal Revenue Bulletin No. 2026-8, which includes Revenue Ruling 2026-5. This revenue ruling provides Section 6621 interest rates for underpayments and overpayments for Q2 2026, as described below:

  • 6% for overpayments generally
  • 5% for overpayments in the case of a corporation, which drops to 3.5% for the portion of a corporate overpayment exceeding $10,000
  • 6% for underpayments generally
  • 8% for large corporate underpayments 

The IRS also released its weekly list of written determinations (e.g., Private Letter Rulings, Technical Advice Memorandums, and Chief Counsel Advice).

Penalty disclosure guidance

February 9, 2026: The IRS released Internal Revenue Bulletin No. 2026-7, which includes Revenue Procedure 2026-12. This revenue procedure specifies when information shown on a return is considered an adequate disclosure for purposes of reducing an understatement of income tax under Section 6662(d) and avoiding a Section 6694(a)’s preparer penalty.

Under Revenue Procedure 2026-12, taxpayers generally “must furnish all required information in accordance with the applicable forms and instructions, and the money amounts entered on these forms must be verifiable.” An amount is verifiable where, “on audit, the taxpayer can prove the origin of the amount (even if that number is not ultimately accepted by the Service) and the taxpayer can show good faith in entering that number on the appli­cable form.” And where an item is being reported does not [...]

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New USPS postmark rules may impact tax filings

by , and | Feb 13, 2026 | ,

Effective December 24, 2025, the United States Postal Service (USPS) adopted final rules that revise how postmarks are defined and treated. These changes have important implications for taxpayers who plan to mail their tax returns and rely on postmarks to establish timely filing.

Under the new framework, the USPS has clarified and, in some cases, narrowed what qualifies as an official postmark, where and when postmarks may be applied, how postmark dates correspond to the USPS’s acceptance of a mailpiece, and which mailing methods provide valid evidence of mailing dates. Taxpayers who do not adhere to the updated requirements may face an increased risk that their returns will be treated as late‑filed.

The USPS finalized the newly added Section 608.11, “Postmarks and Postal Possession” (the Final Rule), as part of the Domestic Mail Manual. On August 12, 2025, the USPS published the proposed rule, 90 F.R. 38716, and invited public comment. The USPS noted that this process was not a traditional rulemaking process because the Final Rule does not make any changes to USPS procedures for applying postmarks to mail and instead provides key definitions. The Final Rule’s purpose is to document existing practices and provide clearer guidance on how postmarks work and how they may differ from a mailpiece’s actual date of mailing.

What is the Final Rule?

Under the Final Rule, a “postmark” is defined as a marking applied by the USPS to confirm its acceptance of custody of a mailpiece. The postmark displays the location of the processing facility or retail unit that applied it, which may not be the location where the USPS first obtained possession of the mailpiece. As a result, the postmark date is not necessarily the date the USPS first obtained possession of the mailpiece. The postmark date generally reflects either the date of the first automated processing operation that is performed on the mailpiece or the date that the mailpiece was first accepted at a retail counter. Because most postmarks are applied at processing facilities, the postmark date and location often differ from the date and place of initial acceptance of the mailpiece

On January 2, 2026, the USPS issued a public statement titled Postmarking Myths and Facts, reiterating that it has not changed its postmarking practices. However, the USPS explained that recent adjustments to its transportation network mean some mail may not reach the processing facility on the same day it is collected or dropped off. Consequently, the postmark date applied at a processing center may differ from the actual date the customer mailed the item.

The Final Rule aims to equip customers with enough information to adjust their mailing practices (e.g., by mailing earlier, requesting a manual postmark at a retail location, or purchasing a Certificate of Mailing).

Importance for tax filings

Internal Revenue Code Section 7502(a) provides that the postmark date is treated as the date a tax return or payment is delivered to the Internal Revenue Service (IRS), sometimes known as the [...]

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IRS roundup: January 21 – February 9, 2026

by , and | Feb 11, 2026 | , , ,

Check out our summary of significant Internal Revenue Service (IRS) guidance and relevant tax matters for January 21, 2026 – February 9, 2026.

January 26, 2026: The IRS released Notice 2026-9, which provides a one-year extension to make certain amendments to individual retirement arrangements (IRAs), simplified employee pension arrangements, and savings incentive match plan for employees IRA plans. The new deadline is December 31, 2027. The extension gives the IRS additional time to issue model language for the various changes resulting from compliance with the SECURE 2.0 Act of 2022 and related legislation.

January 27, 2026: The IRS released Fact Sheet 2026-2, which provides updated questions and answers regarding the implementation of Executive Order 14247, Modernizing Payments To and From America’s Bank Account. The executive order advances the transition to fully electronic federal payments both to and from IRS.

January 29, 2026: The IRS announced that it is accepting applications for the Electronic Tax Administration Advisory Committee (ETAAC) through February 28, 2026. The ETAAC provides an organized public forum for discussing electronic tax administration issues, such as prevention of identity theft and refund fraud.

February 2, 2026: The IRS released Internal Revenue Bulletin No. 2026-6, which includes Announcement 2026-3. The announcement provides a copy of the arrangement entered into by the competent authorities of the United States and Spain regarding the implementation of the arbitration process provided for in paragraphs 5 and 6 of Article 26 of the US-Spain income tax treaty and its protocol.

February 2, 2026: The IRS announced that it would continue operations under the current lapse in appropriations until further notice, using funding from the Inflation Reduction Act of 2022 (IRA).

February 3, 2026: The US Department of the Treasury and the IRS issued proposed regulations regarding the clean fuel production credit enacted by the IRA and amended by the One Big Beautiful Bill Act. The new law made important changes to what is often referred to as the 45Z credit. The proposed regulations would provide rules for determining clean fuel production credits. They also would amend three sets of final regulations: the elective payment election regulations and the credit transfer election regulations (to clarify language relating to ownership of clean fuel production facilities) and the federal excise tax registration regulations (to make them clearer and more consistent with the clean fuel production credit registration requirements in these proposed regulations). The proposed regulations would affect domestic producers of clean transportation fuel, taxpayers that may claim a credit for a related producer’s fuel, and excise tax registrants. Comments must be received by April 6, 2026. There is a public hearing that will be held on May 28, 2026, and requests to speak at the public hearing will be accepted until May 26, 2026.

Recent court decisions

January 28, 2026: The US Tax Court issued its opinion in Aventis Inc. v. Commissioner, rejecting Aventis’s attempt to treat [...]

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IRS roundup: December 12, 2025 – January 12, 2026

by and | Jan 13, 2026 | , ,

Check out our summary of significant Internal Revenue Service (IRS) guidance and relevant tax matters for December 12, 2025 – January 12, 2026.

December 12, 2025: The IRS issued Treasury Decision 10042, which modified and clarified the Internal Revenue Code (Code) Section 892 rules. The Treasury Decision contains final regulations regarding the taxation of income earned by foreign governments from investments in the United States. The regulations clarify how to determine when a foreign government is engaged in commercial activity and when an entity qualifies as a controlled commercial entity. These rules apply to foreign governments that earn income from US sources.

December 12, 2025: The IRS issued proposed regulations, which provided additional guidance under Section 892 and focus on:

  • Determining when an acquisition of debt by a foreign government is treated as a commercial activity
  • Determining when a foreign government has effective control of an entity engaged in a commercial activity
  • Clarifying that partnerships, including partnerships wholly owned by a single foreign sovereign, are not controlled entities under Section 892 for US tax purposes.

December 15, 2025: The IRS issued proposed regulations, updating points of contact within the US Department of Justice (DOJ) and the IRS to identify points of contact for matters involving internal revenue laws following a reorganization within the DOJ. The regulations would also update points of contact at the IRS for taxpayers submitting administrative claims for civil damages related to certain unauthorized collection actions or awards of administrative costs in specified administrative proceedings.

December 15, 2025: The IRS withdrew two notices of proposed rulemaking regarding innocent spouse relief.

December 22, 2025: The IRS issued proposed updates, which set forth a clearer, more predictable system for its Voluntary Disclosure Practice and a more streamlined penalty framework. The IRS seeks public comment on the proposed updates by March 22, 2026.

December 29, 2025: The IRS released Internal Revenue Bulletin 2026-1, which includes the following:

  • Revenue Procedure 2026-1, which contains the revised procedures for letter rulings and information letters issued by the different associate chief counsel offices. This revenue procedure also contains the revised procedures for determination letters issued by the Large Business and International Division, the Small Business/Self-Employed Division, the Wage and Investment Division, and the Tax Exempt & Government Entities (TE/GE) Division.
  • Revenue Procedure 2026-2, which explains when and how associate chief counsel offices should provide advice in technical advice memoranda (TAM) as well as taxpayers’ rights when a field office requests a TAM.
  • Revenue Procedure 2026-3, which provides a revised list of Code areas under the jurisdiction of the following associate chief counsel offices:
    • Corporate
    • Financial Institutions and Products
    • Income Tax and Accounting
    • Passthroughs and Special Industries
    • Procedure and Administration
    • Energy, Credits, and Excise Tax
    • Employee Benefits, Exempt Organizations, and Employment Taxes.

These relate to matters in which the IRS will not issue letter rulings [...]

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IRS roundup: December 15 – December 22, 2025

by and | Jan 6, 2026 | , ,

Check out our summary of significant Internal Revenue Service (IRS) guidance and relevant tax matters for December 15, 2025 – December 22, 2025. 

December 15, 2025: The IRS issued Notice 2026-2, providing an update on weighted average interest rates, yield curves, and segment rates. The notice specifically focused on the corporate bond monthly yield curve, corresponding spot segment rates used for purposes of Internal Revenue Code (Code) Section 417(e)(3), and 24-month average segment rates for purposes of Code Section 430(h)(2). Notice 2026-2 also provides the interest rate for 30-year Treasury securities for purposes of Code Section 417(e)(3)(A)(ii)(II), as in effect for plan years beginning before 2008, as well as the 30-year Treasury weighted average rate for purposes of Code Section 431(c)(6)(E)(ii)(I).

December 15, 2025: The IRS issued Revenue Ruling 2026-2, providing various prescribed rates for federal income tax purposes for January 2026. The prescribed rates include:

  • Short-, mid-, and long-term applicable federal rates for certain debt instruments in the Code.
  • Section 42(b)(1) housing credit appropriate percentages.
  • The deemed rate of return for calendar year 2026 transfers made to pooled income funds, as described in Section 642(c)(5).
  • The average of the applicable federal mid-term rates for the 60-month period ending December 31, 2025.

December 19, 2025: The IRS issued Notice 2026-1, providing interim guidance related to the credit for carbon oxide sequestration under Code Section 45Q pending the forthcoming proposed regulations removing reporting obligations related to the geological sequestration of carbon dioxide imposed under subpart RR of 40 CFR part 98. The notice specifically provides a safe harbor for determining eligibility for qualified carbon oxide, captured and disposed of in secure geological storage and not used as a tertiary injectant in a qualified enhanced oil or natural gas recovery project, during calendar year 2025. Notice 2026-1’s safe harbor applies if the US Environmental Protection Agency does not launch the electronic Greenhouse Gas Reporting Tool for filers to prepare and submit information required under subpart RR by June 10, 2026. Taxpayers can rely on the safe harbor to demonstrate compliance with subpart RR requirements when determining the Code Section 45Q credit related to the 2025 Calendar Year Secure Geological Storage.

December 19, 2025: The IRS issued Notice 2026-6, extending the transition period in Revenue Ruling 2025-4 for states administering paid family and medical leave (PFML) programs and employers participating in PFML programs. The extension is for an additional year and only as it relates to the medical leave benefits a state pays to an individual that can be attributed to employer contributions.

December 22, 2025: The IRS issued Notice 2026-3, providing relief from Code Section 6654 and 6655 additions of tax for underpayments of estimated income tax by taxpayers making valid Code Section 1062(a) elections.

December 22, 2025: In Announcement 2026-1, the IRS declared its intent to issue guidance related to Code Section 6435. That guidance, intended for taxpayers that paid Code [...]

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Potential refund opportunity of buyback excise tax based on § 4501 final regulations

by , , , and | Dec 15, 2025 | ,

Taxpayers who paid the stock repurchase excise tax based on prior guidance provided in Notice 2023-2 and the proposed regulations under Internal Revenue Code (IRC) § 4501 may be entitled to a refund based on changes made in the recently issued IRC § 4501 final regulations.

On November 21, 2025, the US Department of the Treasury (Treasury) and the Internal Revenue Service (IRS) issued final regulations under IRC § 4501, which took effect on November 24 and significantly narrowed the applicability of the stock repurchase excise tax compared to prior guidance provided in Notice 2023‑2 and the April 9, 2024, proposed regulations (collectively, the prior guidance). As a result, many transactions that were previously treated by the prior guidance as “repurchases” subject to the 1% stock repurchase excise tax are now no longer taxable. Taxpayers who paid the excise tax based on the prior guidance may be eligible for a refund.

The final regulations eliminated the prior guidance’s broad “funding rule,” which treated a US affiliate that was considered to have “funded” a foreign publicly traded parent (or its foreign affiliates), including via distributions or capital contributions, as having engaged in a covered stock repurchase. The final regulations also significantly narrowed the proposed regulations’ expansive treatment of transactions as “economically similar” to a stock repurchase by specifically excluding leveraged buyouts and other take-private transactions, complete liquidations, and tax-free acquisitive reorganizations under IRC § 368 from being subject to the excise tax. Moreover, the final regulations narrowed what qualifies as “stock” for IRC § 4501 purposes, specifically excluding certain preferred stock described in IRC § 1504(a)(4) (e.g., “plain vanilla” non-voting, non-participating preferred stock) and certain mandatorily redeemable or puttable stock issued before August 16, 2022 (i.e., the date of enactment of IRC § 4501).

The changes in the final regulations have potentially sweeping implications for taxpayers who paid the IRC § 4501 stock repurchase excise tax based on the prior guidance. The narrower scope of the applicability of stock repurchase excise tax under the final regulations creates a substantial opportunity to seek a refund of stock repurchase excise tax previously paid under the now-obsolete prior guidance.

To seek a refund, taxpayers should file Form 720-X, Amended Quarterly Federal Excise Tax Return, for each quarter they filed an original Form 720 reporting and paid the stock repurchase excise tax and attach a Form 7208 (with “Amended” at the top of each form) to each quarterly Form 720-X. Both Form 720-X and amended Form 7208 should be completed, and the excise tax recomputed, based on the final regulations. Because Form 720-X will serve as the taxpayer’s refund claim, it is critical that Form 720-X contains a detailed explanation of the legal basis for the adjustments to the original Forms 720 and 7208 to meet regulatory requirements imposed by the Treasury on refund claims. See Treas. Reg. § 301.6402-2 (setting forth the basic requirements for refund claims).

Taxpayers considering this refund opportunity should be aware that the statute of limitations deadline for filing a refund [...]

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Major update: Potential refund opportunity for interest and penalty amounts accrued during COVID-19 federally declared disaster

by and | Dec 8, 2025 | , , , , , ,

The US Court of Federal Claims’ (CFC) recent decision in Kwong v. United States, No. 23-267 (Fed. Cl. Nov. 25, 2025), provides significant support for the potential refund opportunity we identified in a previous blog post titled, “Refund opportunity for interest and penalty amounts accrued during COVID-19 federally declared disaster.” The refund opportunity applies to taxpayers who made payments to the Internal Revenue Service (IRS) that included underpayment interest and/or failure-to-file/failure-to-pay penalties that accrued during all or part of the period from January 20, 2020, through July 10, 2023.

Although the CFC’s holding in Kwong addressed whether Internal Revenue Code (IRC) § 7508A provided the taxpayer an extension of the two-year statute of limitations deadline for filing a refund suit (in IRC § 6532(a)) that fell after the COVID-19 disaster was declared, Kwong answered important questions for those taxpayers pursuing refunds for underpayment interest and/or failure-to-file/failure-to-pay penalties that accrued during COVID-19. The CFC held that the 2019 version of IRC § 7508A applies to the COVID-19 federally declared disaster. This is a significant holding because Congress amended IRC § 7508A in 2021 to significantly limit the IRC § 7508A(d) mandatory extension period. The CFC also held that the IRC § 7508A(d) mandatory extension period, as applied to the COVID-19 disaster, commenced on January 20, 2020, and ended on July 10, 2023.

Kwong has potentially sweeping implications for taxpayers who faced federal tax filing and/or payment deadlines that fell between January 20, 2020, and July 10, 2023. Under the CFC’s Kwong analysis, the deadline for payment of any federal tax falling between these two dates was extended to July 11, 2023. Since the IRS computes underpayment interest and/or failure-to-file/pay penalties from the payment due date, penalties should not accrue from January 20, 2020, through July 10, 2023, and any taxpayers who already paid these amounts may be entitled to a refund. The CFC’s analysis also does not rule out the possibility that taxpayers with payment due dates preceding January 20, 2020, may be entitled to relief to the extent the underpayment interest and/or failure-to-file/failure-to-pay penalties accrued during the COVID-19 disaster period.

As noted in our previous post, taxpayers considering this refund opportunity should be aware that the statute of limitations to file a refund claim expires three years from the filing deadline of the original tax return or two years from the date on which payment was made, whichever is later (unless the statute of limitations period was otherwise extended). This refund opportunity may apply to underpayment interest and/or penalties paid with respect to federal income, estate, gift, employment, or excise taxes.



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IRS roundup: November 7 – November 24, 2025

by , , , , and | Dec 2, 2025 | , , ,

Check out our summary of significant Internal Revenue Service (IRS) guidance and relevant tax matters for November 7, 2025 – November 24, 2025.

November 10, 2025: The IRS released Internal Revenue Bulletin No. 2025-46, which includes proposed regulations 109742-25. The proposed regulations would remove a rule in previous final regulations that uses the shareholders of certain domestic corporations to determine whether foreign persons hold – directly or indirectly – stock in a domestically controlled qualified investment entity (QIE). If a QIE was not domestically controlled following the changes from the proposed regulations, stock owned by foreign persons in a QIE would qualify as a US real property interest.

November 10, 2025: The IRS released Revenue Procedure 2025-31, providing guidance on a safe harbor that allows trusts qualifying as investment trusts under Section 301.7701-4(c) and as grantor trusts to stake digital assets without losing their tax status and offering a limited period for existing trusts to amend their governing instruments to meet the safe harbor requirements.

November 13, 2025: The IRS released Notice 2025-67, which announces the annual cost-of-living adjustments to the limits on benefits and contributions for qualified retirement plans under Section 415 of the Internal Revenue Code (Code). These adjustments, required by Section 415(d), follow procedures similar to those used for Social Security benefit updates and apply to certain amounts under deferred compensation plans.

November 13, 2025: The IRS released Revenue Ruling 2025-22, announcing that interest rates will remain unchanged for the calendar quarter beginning January 1, 2026. The rates are as follows:

  • 7% for individual overpayments and 6% for corporate overpayments
  • 5% on the portion of a corporate overpayment exceeding $10,000
  • 7% for underpayments and 9% for large corporate underpayments

Under the Code, these rates are recalculated quarterly based on the federal short-term rate. For noncorporate taxpayers, both overpayment and underpayment rates equal the federal short-term rate plus three percentage points. For corporations, the underpayment rate is also the short-term rate plus three points while the overpayment rate is the short-term rate plus two points. Large corporate underpayments add five points, and corporate overpayments exceeding $10,000 add 0.5 points. The current rates are based on the federal short-term rate determined in October 2025.

November 19, 2025: The IRS announced that it would resume its regular activities following the 2025 lapse in appropriations during the government shutdown. In its announcement, the IRS included specific frequently asked questions regarding the resumption of regular activities for audits, collections, and appeals and stated that determination letter applications for tax exempt and government entities would resume.

Recent court decisions

November 5, 2025: The US District Court for the Northern District of Texas issued an opinion in Ryan, LLC v. IRS. Check out our recent insight on the case, including an analysis of the district court’s holdings and practice points for taxpayers.

November 12, 2025: The US [...]

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