How does Oklahoma calculate property tax?

Oklahoma multiplies your home's market value by the county assessment ratio (usually 11% to 13.5%) to get the assessed value, subtracts any homestead exemption, then multiplies by the mill levy (tax per 1,000 dollars of assessed value).

What is the assessment ratio in Oklahoma?

Oklahoma counties assess residential property at between 11% and 13.5% of fair market value, set locally. Most counties use a ratio near 11% to 12%, far below the full market value used in many other states.

What is the homestead exemption?

Oklahoma offers a homestead exemption that removes 1,000 dollars of assessed value from your taxable base for your primary residence, saving roughly the mill levy times one. Additional exemptions exist for low-income and senior homeowners.

A mill is one dollar of tax per 1,000 dollars of assessed value. A mill levy of 100 mills means you pay 100 dollars per 1,000 dollars of net assessed value. Levies fund schools, counties, and other local districts.

How accurate is this estimate?

It is a close estimate using your inputs. Actual bills depend on your county's exact assessment ratio, total millage across all districts, and any additional exemptions, so confirm with your county assessor.

Oklahoma Property Tax Estimator

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Oklahoma has some of the lowest property taxes in the country, partly because counties assess homes at only about 11% to 13.5% of market value. This estimator walks through Oklahoma’s actual method — applying the assessment ratio, subtracting the homestead exemption, and multiplying by the mill levy — to project your annual bill.

How it works

Oklahoma property tax is calculated in three steps:

Assessed value. Market value × assessment ratio. At an 11% ratio, a $200,000 home has an assessed value of $22,000.
Homestead exemption. Subtract the homestead exemption ($1,000 of assessed value) for your primary residence to get the net taxable value.
Apply the mill levy. A mill is $1 of tax per $1,000 of net assessed value, so tax = net assessed value × (mills ÷ 1000).

Tax = (Market Value × Assessment Ratio − Homestead Exemption) × Mills ÷ 1000

Tips and example

A $200,000 home at an 11% assessment ratio has a $22,000 assessed value. After the $1,000 homestead exemption, the net is $21,000. At a mill levy of 100 mills, the tax is 21,000 × 100 ÷ 1000 = $2,100 per year.

Lowering your bill usually means claiming every exemption you qualify for — Oklahoma offers extra homestead relief for low-income and senior homeowners. Always confirm your county’s exact assessment ratio and total millage, which combine school, county, and city levies.