How is Ohio property tax calculated?

Ohio taxes 35% of a property's market value, called the assessed or taxable value. The county multiplies that taxable value by the effective millage rate (mills divided by 1,000) to get the gross tax, then applies reductions for owner-occupancy and homestead before the final bill.

What is the 35% assessment ratio?

Ohio law assesses real property at 35% of its appraised market value statewide. So a home appraised at 200,000 dollars has a taxable value of 70,000 dollars, and millage rates are applied to that 70,000, not the full market value.

A mill is one-tenth of a cent, or 1 dollar of tax per 1,000 dollars of taxable value. An effective rate of 60 mills means 60 dollars of tax per 1,000 dollars of assessed value. Effective millage is the rate after state-mandated reduction factors, which is lower than the voted gross millage.

What is the homestead exemption?

Ohio's homestead exemption shields a portion of home value from taxation for qualifying seniors (65+), disabled homeowners, and certain veterans. It reduces taxable value by a set amount (around 28,000 dollars of market value), lowering the bill. Income limits apply for most applicants.

How accurate is this estimate?

It is a close approximation. Real bills vary with your exact taxing district, special assessments, and current reduction factors set annually by the state. Always confirm with your county auditor for the precise figure.

Ohio Property Tax Estimator

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Property tax is often a homeowner’s largest recurring local cost, and Ohio’s system has a few quirks — most importantly, it taxes only 35% of market value, not the full price. This estimator applies Ohio’s assessment ratio, your district’s millage rate, and the available reductions to approximate your annual property tax bill.

How it works

Ohio property tax is computed in four steps:

taxable value = market value × 0.35
gross tax     = taxable value × (effective mills ÷ 1000)
net tax       = gross tax − owner-occupancy credit − homestead reduction

Assessed value. Ohio taxes 35% of the county auditor’s appraised market value. A $200,000 home has a $70,000 taxable value.
Millage. A mill is $1 of tax per $1,000 of taxable value. The effective rate (after state reduction factors) is multiplied against the taxable value.
Owner-occupancy credit. Owner-occupied homes get a small percentage reduction (historically 2.5%) on qualifying levies.
Homestead exemption. Eligible seniors, disabled homeowners, and veterans shield roughly $28,000 of market value (about $9,800 of taxable value) from tax.

Tips and example

Take a $200,000 home in a district with an effective rate of 60 mills. The taxable value is $70,000, and the gross tax is 70 × 60 = $4,200. Apply the 2.5% owner-occupancy credit and the bill drops to about $4,095. If the owner also qualifies for homestead, roughly $9,800 comes off the taxable value first, saving another few hundred dollars.

Effective millage varies widely across Ohio’s thousands of taxing districts, so check your county auditor’s site for your exact rate. This estimate ignores special assessments and annually-updated reduction factors, so treat it as a planning figure.