Treasury Proposes New Rules for Single-Employer Defined Benefit Pension Funding: Technical Analysis for Tax Professionals
Determination of Target Normal Cost and Funding Target for Single-Employer Defined Benefit Plans, REG-107855-25, RIN 1545-BR50, 91 Fed. Reg. _____ (proposed Aug. 20, 2026) (to be codified at 26 C.F.R. § 1.430(d)-1)
The Department of the Treasury (Treasury Department) and the Internal Revenue Service (IRS) have released a Notice of Proposed Rulemaking under REG-107855-25, which proposes to “modify rules in the existing regulations relating to the minimum funding requirement applicable to single-employer defined benefit pension plans”. These proposed regulations aim to “implement certain statutory amendments that have not yet been reflected in the regulations”.
Historically, the minimum funding rules under Internal Revenue Code (I.R.C.) § 430 were established by the Pension Protection Act of 2006 (PPA ’06), Pub. L. No. 109-280, 120 Stat. 780. The existing final regulations, published on October 15, 2009 (T.D. 9467), have applied to plan years beginning on or after January 1, 2010. Since the issuance of T.D. 9467, several key statutory changes have altered the landscape of single-employer defined benefit plans. The proposed regulations primarily reflect amendments made by the Worker, Retiree, and Employer Recovery Act of 2008 (WRERA ’08), Pub. L. No. 110-458, 122 Stat. 5092; the Setting Every Community Up for Retirement Enhancement Act of 2019 (SECURE Act), Pub. L. No. 116-94, 133 Stat. 2534; and the SECURE 2.0 Act of 2022 (SECURE 2.0 Act), Pub. L. No. 117-328, 136 Stat. 4459.
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