If Ohio has over-valued your home, you overpay property tax every year until you fix it. Filing an appeal is a standard, homeowner-friendly process — here is exactly how it works in Ohio, including the deadline, the governing law, and the five steps to file.
The Ohio deadline
The appeal window in Ohio is typically January - March, and the filing deadline is March 31 (complaint to board of revision). Miss it and you generally wait a full year, so check your assessment notice the moment it arrives. See the national deadline calendar for how this compares.
How Ohio values your home
Ohio taxes only 35% of your home's market value (its assessment ratio), so an assessment notice showing $100,000 implies a market value of $285,714. Convert the notice to an implied market value before deciding whether to appeal. Ohio assesses property at 35% of true (market) value, updated through sexennial reappraisals and triennial updates by the county auditor. The process is authorized under Ohio Rev. Code § 5715.19 (complaints against valuation).
How to appeal your property taxes in Ohio
Step 1. Review your property's assessed (35%) and market values with the county auditor.
Step 2. File a Complaint Against the Valuation (DTE Form 1) with the county Board of Revision by March 31.
Step 3. Provide a recent sale price, appraisal, or comparable sales as evidence.
Step 4. Present your case at the Board of Revision hearing.
Step 5. Appeal to the Ohio Board of Tax Appeals or common pleas court if needed.
Build your evidence
The strongest case is a tight set of comparable sales — 3 to 5 similar homes near you that sold for less than your assessed value — plus any property-record errors you can document. You can also make an unequal-assessment argument if comparable homes are assessed for less than yours.
Don't forget exemptions
An appeal lowers your value, but a homestead exemption cuts your taxable base directly — and the two stack. Confirm you're enrolled with your county before you file.
The shortcut
Checking comps and building the packet is where most homeowners give up. TaxAppealAgent does it for you: check your Ohio property for $4.99 (credited), and if you're over-assessed we assemble the comparable-sales evidence and a Ohio-specific appeal letter for a flat $29. You file it and keep 100% of the savings. See the full Ohio appeal guide.