How to Appeal Your Property Tax in Montana
Montana homeowners can appeal their property tax assessment if they believe it's too high. This guide covers the 2026 appeal deadline, required evidence, and step-by-step process.
How Montana Assesses Property
Montana assesses residential property at 100% of market value.
Montana assesses property at 100% of market value, then applies a class-specific tax rate.

The Appeal Process
Appeals are heard by the County Tax Appeal Board. An informal review is available before filing a formal appeal.
Department of Revenue (Informal)
County Tax Appeal Board
State Tax Appeal Board
District Court
Montana Appeal Deadline
What Overassessment Costs Montana Homeowners
The median home in Montana is worth $330,000. If your assessment is just 10% too high, you may be overpaying:
~$244/year
Effective tax rate: 0.74% · Median value: $330,000
Check Your Montana Assessment
Enter your address to see your estimated overassessment and Montana filing deadline.
Montana Counties
Guides & Resources
Property Tax Appeal Resources
Best Appeal Services Compared
7 companies compared — pricing, coverage, and pros/cons for 2026.
2026 Appeal Deadlines
Every state's deadline, filing method, and what happens if you miss it.
Assessment Ratios by State
Every state's assessment percentage — from 4% to 100% — with worked examples.
9 Ways to Lower Your Property Taxes
From homestead exemptions to formal appeals — every method that works.
Savings Calculator
Check if you're overassessed — enter your assessed value to see potential savings.