Montana Property Tax Calculator 2026

Calculate property taxes in Montana. The average effective property tax rate in MT is 0.59%, which is below the national average of 0.89%. Estimate your annual property tax bill.

By Konstantin Iakovlev · Updated October 19, 2026 · Methodology

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Annual Property Tax

$2,065.00

Monthly Equivalent

$172.08

Effective Rate

0.590%

Property Tax Breakdown

Assessed Value$350,000.00
Homestead Exemption$0.00
Taxable Value$350,000.00
Annual Tax$2,065.00
Monthly Equivalent$172.08

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

Montana Property Tax Guide

Montana funds a large share of local government and schools through property tax, and the statewide average effective rate runs about 0.59% of a home's value. That's below the roughly 0.9% national average, though the figure is an average; what any single owner pays depends on the county, the local mill levies, and how the property is classified. Residential property is assessed by the state, then taxed locally through mills set by counties, cities, and school districts.

To ballpark a bill, multiply the property's assessed market value by the local effective rate. A $400,000 home at 0.59% works out to roughly $2,360 a year, though the precise total reflects the specific mills where the home sits. Montana also offers relief programs, including a property tax assistance program for qualifying lower-income owners and benefits tied to disabled veterans, which can reduce the taxable value or the bill. The Montana Department of Revenue handles assessment and classification, while the county treasurer issues and collects the actual bill.

Montana Property Tax Details (2026)

Avg. Effective Property Tax Rate 0.59%
National Average 0.89%
vs. National Average 0.3 points below
Estate Tax None
State Sales Tax None
State Income Tax progressive (up to 5.65%)

Official Sources:

Montana Property Tax FAQ

What is the average property tax rate in Montana?
Montana's average effective property tax rate is about 0.59% of a home's value, below the national average of roughly 0.9%. Because it's an average, your own rate varies with your county and the combined mill levies of the local governments and school districts serving your property. Two homes of equal value in different counties can owe noticeably different amounts.
How is my Montana property tax bill calculated?
The Montana Department of Revenue assesses your property's market value and classification, and local taxing jurisdictions apply their mill levies to produce the bill, collected by your county treasurer. For a rough estimate, multiply assessed value by the local effective rate; at the 0.59% statewide average, a $400,000 home runs about $2,360 a year before any exemptions.
Are there property tax exemptions or relief programs in Montana?
Yes. Montana runs a property tax assistance program that can lower taxable value for qualifying lower-income homeowners, along with relief tied to disabled veterans and certain other categories. Eligibility and benefit amounts are set by the Montana Department of Revenue, and applying is the homeowner's responsibility, so relief isn't applied automatically.
Who assesses and collects property tax in Montana?
Assessment and classification of property are handled at the state level by the Montana Department of Revenue, which determines each property's value. The actual tax is set through mill levies adopted by counties, cities, and school districts, and the county treasurer sends the bill and collects payment. So valuation and billing are split between state and county functions.

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