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Interest rates: underpayments and overpayments. The rates for interest determined under Section 6621 of the code for the calendar quarter beginning July 1, 2025, will be 7 percent for overpayments (6 percent in the case of a corporation), 7 percent for underpayments, and 9 percent for large corporate underpayments. The rate of interest paid on the portion of a corporate overpayment exceeding $10,000 will be 4.5 percent.
26 CFR 301.6621-1: Interest rate.
This notice sets forth updates on the corporate bond monthly yield curve, the corresponding spot segment rates for April 2025 used under § 417(e)(3)(D), the 24-month average segment rates applicable for May 2025, and the 30-year Treasury rates, as reflected by the application of § 430(h)(2)(C)(iv).
Federal rates; adjusted federal rates; adjusted federal long-term rate, and the long-term tax exempt rate. For purposes of sections 382, 1274, 1288, 7872 and other sections of the Code, tables set forth the rates for June 2025.
(Also Sections 42, 280G, 382, 467, 468, 482, 483, 1288, 7520, 7872.)
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