11/17/2025
The IRS has announced that interest rates will remain unchanged for the calendar quarter beginning January 1, 2026.
For individuals, the rate for overpayments (yes, IRS has to pay you interest sometimes) and underpayments will be 7% per year, compounded daily.
The rate is 6% for corporate overpayments (4.5% for the portion exceeding $10,000) and 7% for corporate underpayments (9% for large corporate underpayments).
The interest rate is set quarterly—the most recent rates are based on the federal short-term rate determined in October 2025.
You can find the details in Rev Ruling 2025-22, which will appear in IRB 2025-48, dated November 24, 2025. (Remember that you can find all of the IRB links in my free weekly tax newsletter.)