Annual Interest Rate
By October 31st of each year, the interest rate that applies to unpaid income tax balances during the next calendar year will be posted herein, as required by Ohio Revised Code Section 718.27(F). The interest rate is calculated by adding five percentage points to the Federal short-term rate (rounded to the nearest whole percent) that was in effect during July of the current year. The applicable interest rates are:
| YEAR | ANNUAL INTEREST RATE | MONTHLY INTEREST RATE |
| 2025 | 10.0% | 0.83% |
| 2024 | 10.0% | 0.83% |
| 2023 | 7.0% | 0.58% |
| 2022 | 5.0% | 0.42% |
| 2021 | 5.0% | 0.42% |
| 2020 | 7.0% | 0.58% |
| 2019 | 7.0% | 0.58% |
| 2018 | 6.0% | 0.50% |
| 2017 | 6.0% | 0.50% |
| 2016 | 5.0% | 0.42% |