what is the interest rate on federal taxes
Interest accrues on the unpaid balance and compounds daily from the due date of the return (without regard to any extension of time to file) until you pay the balance in full. The interest rate is the federal short-term rate plus 3%. The federal short-term rate is determined every three months. For the current quarterly interest rate on underpayments, search interest rates in the News Release and Fact Sheet Archive or quarter interest rates on IRS.gov. Failure to pay penalty is charged for failing to pay your tax by the due date. The late payment penalty is 0.5% of the tax owed after the due date, for each month or part of a month the tax remains unpaid, up to 25%.