IRS Interest Rates for Q3

The IRS interest rates for underpayments and overpayments for the third quarter of 2025 beginning July 1, 2025, are unchanged from those in the second quarter. The rates are 7% for overpayments (payments made in excess of the amount owed), 6% for corporations, and 4.5% for the portion of a corporate overpayment exceeding $10,000. They are 7% for underpayments (taxes owed but not fully paid), and 9% for large corporate underpayments. Because these rates apply to underpayments of estimated taxes, pay attention to estimated tax payments due one week from now. #IdeaoftheDay