Ohio Property Tax Calculator
Estimate your Ohio property taxes. Ohio assesses most property at 35% of appraised (market) value. Enter your market value and your county's mill rate to see your estimated annual and monthly bill.
The Formula
Annual Tax = Taxable Assessed Value × (Mill Rate ÷ 1,000)
Assessed Value = Market Value × Assessment Ratio (state-specific — see note below)
Mill Rate: 1 mill = $1 per $1,000 of assessed value. Enter your actual rate from your county tax bill.
Ohio Property Tax Inputs
Assessment ratio note: Ohio law: taxable assessed value = 35% of appraised (market) value for most real property. Source: Ohio Department of Taxation, tax.ohio.gov/government/real-property-tax (as of June 2026).
Pre-filled with Ohio's common ratio. Verify on your tax bill.
Enter your actual combined mill rate. The pre-filled value is illustrative only.
Dollar reduction from assessed value. Check with your county assessor.
Ohio Property Tax — Key Facts
- 35% assessment ratio: Ohio law requires assessed value = 35% of appraised value for most property. Source: Ohio Dept. of Taxation (June 2026).
- County auditor: Each of Ohio's 88 county auditors is responsible for property appraisal and assessment. Contact your county auditor for your assessed value and mill rate information.
- Sexennial reappraisal: Full reappraisal every 6 years; triennial update in year 3. Counties are staggered so that one-third reappraise each year.
- Homestead exemption: A homestead exemption is available to qualifying seniors (65+) and permanently disabled homeowners. Contact your county auditor to apply.
- Owner Occupancy Credit (2.5% rollback): Owner-occupied residential property may qualify for a 2.5% reduction in taxes — verify with your county auditor.
Source: Ohio Department of Taxation — tax.ohio.gov/government/real-property-tax (verified June 2026).
Frequently Asked Questions
Ohio law requires taxable assessed value to be 35% of the appraised (market) value for most property. For example, a home appraised at $200,000 has an assessed value of $70,000. Source: Ohio Department of Taxation, tax.ohio.gov/government/real-property-tax (June 2026).
One mill equals $1 of tax per $1,000 of assessed value (35% of appraised value). So a 30-mill rate on a $200,000 home means: assessed value = $70,000; annual tax = $70,000 × 0.030 = $2,100. The effective rate on market value is $2,100 / $200,000 = 1.05%.
Ohio county auditors conduct a full sexennial (6-year) reappraisal and update values in the third year following each reappraisal. Ohio's 88 counties are divided into three groups so that reappraisals are staggered. Source: Ohio Department of Taxation (June 2026).
Your county auditor's website is the primary source for assessed values and tax rates. The Ohio Department of Taxation's resources are at tax.ohio.gov/government/real-property-tax.