Annual Certified Interest Rates

General Information

In October each year, the State of Ohio Tax Commissioner certifies interest rates that apply to overdue taxes during the next calendar year. For most taxes, the interest rate is calculated by adding three percentage points to the short-term rate (rounded to the nearest percentage point) that was in effect during July of the current year.

Based on this formula, the Tax Commissioner has certified that the interest rate that will apply to most overdue taxes during 2020 is 5%.

Interest Rate Tables