RR-2023-17, Fourth Quarter Interest Rates 2023

Revenue Ruling 2023-17 provides interest rates on underpayments and overpayments for the fourth quarter 2023. The rates for interest determined under Section 6621 of the code for the calendar quarter beginning October 1, 2023, will be 8 percent for overpayments (7 percent in the case of a corporation), 8 percent for underpayments, and 10 percent for large corporate underpayments. The rate of interest paid on the portion of a corporate overpayment exceeding $10,000 will be 5.5 percent.

Revenue Ruling 2023-17 will be published in Internal Revenue Bulletin 2023-37 on Sept. 11, 2023.

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