Ohio Property Tax Appeal Guide
How to challenge your property tax assessment in Ohio - deadlines, process, and a savings calculator.
What This Data Tells Us About Appeals in Ohio
- Administrative filing in Ohio is listed at $0, so the first barrier is evidence and timing, not a petition fee.
- This ACS extract does not store how often Ohio assessments are reduced on appeal; comparable sales and property-record errors are the evidence the named board typically asks for.
- The typical window centers on March; confirm the current county notice date before relying on the statewide summary. Deadline shape differs on Delaware and Kansas.
Primary signal
Ohio's process has its own procedural details
Ohio assesses at 35% of true value. Triennial reappraisals (every 3 years) trigger the best appeal opportunities. You cannot appeal without a valid change in circumstances outside reappraisal years.
Decision signal 2
The administrative filing is usually free
File with the County Board of Revision. The reported filing-fee structure is $0; later court or tribunal stages may use a different schedule.
Decision signal 3
The filing window centers on March
March 31 deadline. Deadlines can vary by county and assessment cycle, so confirm the current date with the local assessor before relying on this guide.
Decision signal 4
This extract does not store an appeal-win rate
The ACS county medians on this site do not include how often Ohio assessments are reduced on appeal. Recent comparable sales and documented property-record errors are the evidence boards typically ask for.
How to read this guide and disclaimer
Use the ranked signals above as a preparation order, not as a forecast. Start with the filing window and named appeal body because a strong valuation argument cannot cure a missed deadline or a filing sent to the wrong office. Then compare the assessment with recent, genuinely similar properties and document factual errors such as incorrect square footage, condition, or classification.
An estimated success rate is not part of this ACS extract. Keep copies of the assessment notice, evidence, forms, delivery confirmation, and every response from the taxing authority. If a state rule and a county instruction differ, follow the current instruction issued by the office that will hear the appeal.
This guide is for informational purposes only and is not legal or tax advice. Deadlines, filing fees, and procedures vary by county within Ohio and can change year to year. Always verify the current rules with your local assessor's office, or a licensed attorney or tax professional, before filing. Source: Ohio Department of Taxation.
Appeal calendars beside Ohio
Other state boards, not geography. Use them to see whether Ohio's March window is unusual; start with Delaware and Kansas.
| Peer state | Typical month | Filing fee |
|---|---|---|
| Delaware Also open Delaware appeal steps | March | $0 |
| Kansas Also open Kansas appeal steps | March | $0 |
| South Dakota Also open South Dakota appeal steps | March | $0 |
| Arizona Also open Arizona appeal steps | April | $0 |
| Connecticut Also open Connecticut appeal steps | February | $0 |
Appeal Deadline
March 31 deadline
Appeal Body: County Board of Revision
Step-by-Step Appeal Process
- 1
Review your assessment from the county auditor
- 2
File a Complaint Against the Valuation of Real Property (DTE Form 1) with the County Board of Revision by March 31
- 3
Attend a Board of Revision hearing (typically June–September)
- 4
If denied, appeal to the Ohio Board of Tax Appeals within 30 days
Ohio-Specific Notes
Ohio assesses at 35% of true value. Triennial reappraisals (every 3 years) trigger the best appeal opportunities. You cannot appeal without a valid change in circumstances outside reappraisal years.
Source: Ohio Department of Taxation
Estimate appeal savings
After you have Ohio's deadline (March) and filing route (County Board of Revision), project annual savings if an assessment cut sticks. The shared estimator lives on one tools URL so each state page keeps its own process facts instead of reprinting the same form.
Open appeal savings estimator →