Assessment Ratio
35%
Complaint Deadline
March 31, 2026
Official Form
Board of Revision
Risk of Increase
Yes
How Assessment Works in Ohio
Ohio assesses property at 35% of true (market) value. Your assessed value should be 35% of what your home would sell for. If the county auditor's valuation implies a market value higher than comparable sales support, you have grounds to file a complaint.
Risk of Increase
In Ohio, filing a complaint can result in your assessed value being increased. This is uncommon when you have strong evidence of over-assessment, but you should be aware of this possibility. ProtestMax only recommends filing when our analysis shows a clear case for reduction.
How to File in Ohio
File a complaint with your county Board of Revision. Forms are available at the county auditor's office or online. The deadline is March 31.
Step-by-Step
Ohio Complaint Process
Review your property valuation on the county auditor's website.
File a complaint (DTE Form 1) with the county Board of Revision by March 31.
The Board of Revision will schedule a hearing (typically within 60-90 days).
Present your comparable sales evidence at the hearing.
The Board issues a decision. If denied, appeal to the Board of Tax Appeals or Common Pleas Court within 30 days.
FAQ
Ohio Property Tax Complaint Questions
How does the 35% ratio work in Ohio?
If your home's true value is $200,000, the assessed value should be $70,000 (35%). Your tax bill is based on this assessed value multiplied by your millage rate. If the auditor says your home is worth $250,000, you pay taxes on $87,500 instead of $70,000.
Can my Ohio assessment increase on complaint?
Yes. The Board of Revision or a school board counter-complaint can result in an increase. School boards in Ohio have the right to file counter-complaints seeking higher values. Evaluate your risk carefully before filing.
How often does Ohio reassess?
Ohio counties conduct triennial reappraisals with a full revaluation every six years. In between, an update year adjusts values based on sales data. You can file a complaint in any year, but the strongest cases arise in reappraisal years.
What is the effective property tax rate in Ohio?
Ohio property tax rates vary by county, municipality, and school district, but the effective rate (annual tax paid divided by market value) typically ranges from about 0.5% to 2.5%. Because Ohio assesses property at 35% of market value, your actual tax bill depends on both the assessed value and the local millage or mill levy applied on top of it. If your assessed value is higher than comparable sales support, filing a complaint is one of the only ways to reduce your effective rate without waiting for a reassessment.
How long does a property tax complaint take in Ohio?
Most Ohio complaints take between 6 weeks and 6 months from filing to final decision. After you file Board of Revision, the assessor or review board schedules a hearing — typically within 30 to 90 days — and issues a written decision shortly after. Cases that settle informally resolve faster, while cases that advance to a formal hearing or court appeal can take several additional months. ProtestMax prepares your full evidence packet in minutes so you can file immediately and start the clock.
Can I complaint my property taxes every year in Ohio?
Yes. In Ohio, homeowners generally have the right to complaint their property tax assessment every year, as long as you file by the March 31, 2026 deadline. Even if you won a reduction last year, your assessor can revalue your property the following year, and you retain the right to challenge the new value. Annual complaints are especially important during years when market values are flat or falling but assessments keep rising.
What evidence is most persuasive in Ohio hearings?
The strongest evidence in a Ohio complaint hearing is recent comparable sales — homes similar to yours in size, age, condition, and location that sold for less than your assessed value within the last 6 to 12 months. Equity comparisons (similar homes assessed for less than yours) are also highly persuasive. Photos of deferred maintenance, structural issues, or negative location factors (busy roads, flood zones, power lines) strengthen your case further. ProtestMax assembles all of this evidence into a hearing-ready packet tailored to Ohio's rules.