Irs Interest Rates 2024 Payment. The irs interest rate on unpaid taxes and tax refunds for individuals is 8% for the first three quarters of 2024 (the rate is adjusted on a quarterly basis). This decision comes amidst ongoing economic.

These rates, known as applicable federal rates (afrs), are regularly published as revenue rulings. The internal revenue service (irs) announced on february 21, 2024, that the irs interest rates for the year’s second quarter will remain the same as they were for the first.