The interest rate for tax year 2016 is 5%.

Ohio Revised Code 718.27 requires that municipalities set the interest rate for delinquent unpaid tax liabilities at the federal short-term rate (rounded to the nearest whole number percent) plus 5 percent (5%). Interest shall be imposed per annum on all unpaid income tax, unpaid estimated income tax, and unpaid withholding tax. The interest rate shall apply to the calendar year following the July of the year in which the federal short-term rate is determined.