How is Wyoming property tax calculated?

Wyoming assesses residential property at 9.5% of fair market value, then multiplies that assessed value by the local mill levy. One mill equals one dollar of tax per 1,000 dollars of assessed value, so a 70-mill levy is a 7% rate on assessed value.

What is Wyoming's residential assessment ratio?

Wyoming taxes residential and most other property at 9.5% of market value. Industrial property is assessed at 11.5% and mineral production at 100%, but homes use the 9.5% level of assessment statewide.

What mill levy should I use?

Total mill levies in Wyoming commonly fall between about 55 and 75 mills, combining county, school district and special districts. Check your county assessor for the exact figure; the tool defaults to 70 mills as a typical value.

Are there property tax exemptions in Wyoming?

Wyoming offers a veterans exemption that reduces assessed value, and a property tax refund program for qualifying homeowners. This tool lets you enter a veterans exemption amount, which is subtracted from assessed value before tax is computed.

How accurate is this estimate?

It is a close estimate using the statewide 9.5% assessment ratio and the mill levy you provide. Your actual bill depends on your exact county and district levies and any exemptions or refunds you qualify for.

Wyoming Property Tax Estimator

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Wyoming property tax follows a clear two-step formula: the state taxes homes at a fixed 9.5% of market value, then your county applies a mill levy to that assessed value. This estimator turns your home’s market value and local mill levy into an annual tax figure, with room for the Wyoming veterans exemption.

How it works

The calculation has three steps:

Assessed value. Wyoming assesses residential property at 9.5% of fair market value. A $300,000 home has an assessed value of $28,500.
Exemptions. Any veterans exemption amount is subtracted from the assessed value.
Mill levy. One mill is $1 of tax per $1,000 of assessed value, so the rate is mills ÷ 1000. A 70-mill levy is a 7% rate applied to assessed value.

Putting it together:

tax = (market value × 0.095 − exemption) × (mills ÷ 1000)

Notes and example

A $300,000 home assessed at 9.5% gives $28,500 of assessed value. At a typical 70-mill levy that is $28,500 × 0.070 = $1,995 per year — a relatively low bill, since Wyoming’s effective property tax rate is among the lowest in the country. Mill levies vary by county and school district, so enter your own total levy for the most accurate result. Veterans and qualifying low-income homeowners may reduce this further through exemptions and refund programs.