This article highlights key updates from IRS Bulletin 2025-49, including updated Section 415 retirement plan limits and the newly published 2025 base period T-bill rate.
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The Internal Revenue Bulletin (IRB) is the authoritative instrument for announcing official rulings and procedures of the IRS and for publishing Treasury Decisions, Executive Orders, Tax Conventions, legislation, court decisions, and other items of general interest.
EMPLOYEE PLANS
Notice 2025-67, page 761.
Section 415 of the Internal Revenue Code provides for dollar limitations on benefits and contributions under qualified retirement plans. Section 415(d) requires that the Secretary of the Treasury annually adjust these limits for cost of living increases. Other limitations applicable to deferred compensation plans are also affected by these adjustments under § 415. Under § 415(d), the adjustments are to be made under adjustment procedures similar to those used to adjust benefit amounts under § 215(i)(2)(A) of the Social Security Act.
INCOME TAX
Rev. Rul. 2025-23, page 749.
2025 Base Period T-Bill Rate. The “base period T-bill rate” for the period ending September 30, 2025 is published as required by section 995(f) of the Internal Revenue Code