IRS Rev. Rul.: Underpayment, Overpayment Interest Rates Decrease for First Quarter of 2025 (IRC §6621)

First quarter interest rates for 2025, including the rates for underpayments and overpayments, the IRS released. An overpayment rate of 7% percent (6% in the case of a corporation) and an underpayment rate of 7% are established for the calendar quarter beginning Jan. 1, 2025. The overpayment rate for the portion of a corporate overpayment exceeding $10,000 for the calendar quarter beginning Jan. 1, 2025, is 4.5%. The underpayment rate for large corporate underpayments for the calendar quarter beginning Jan. 1, 2025, is 9%. [Rev. Rul. 2024-25, 2024-49 I.R.B. __ (Dec. 2, 2024)]

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