Bonner Property Tax Quick Facts
- Location
- Bonner, Montana
- Missoula County
- Assessed By
- Montana Department of Revenue
- Appeal Deadline
- First Monday in June or 30 days
- County Tax Rate
- ~0.85%
- Shared with Bonner
How to Appeal Property Taxes in Bonner
Check your assessment
Enter your Bonner address for a free 60-second check. We compare your assessed value against comparable sales and neighborhood data.
Get your evidence packet
If over-assessed, pay $45 for a complete appeal packet with comparable sales, equity analysis, and pre-filled forms for Missoula County.
File your appeal
Submit your appeal to Montana Department of Revenue before First Monday in June or 30 days. Our filing guide walks you through every step.
About the Bonner Property Market
Bonner is a city located in Missoula County, Montana. Every property inside the Bonner city limits is assessed by Montana Department of Revenue, which applies Montana property tax rules uniformly across the county.
Because Bonner property values are set at the county level, the $400,000 county median home value and 0.85% effective tax rate apply to homes throughout the city. Homeowners who believe their Bonner home is over-assessed have the right to file a appeal directly with Montana Department of Revenue before the First Monday in June or 30 days deadline.
Montana allows the assessor to defend or adjust the assessed value during a appeal, so Bonner homeowners should build a strong evidence-based case before filing — which is exactly what ProtestMax generates for $45.
Bonner Property Market Context
Bonner homeowners navigate the same Montana assessment system as every other community in the state, but local market dynamics mean over-assessments here have their own character.
Montana market character
Montana reassesses on a two-year cycle, and the state saw historic 40%+ appreciation in the 2023 cycle that produced widespread sticker-shock notices. Bozeman, Missoula, and resort areas have been the epicenter of over-assessments.
How Montana handles appeals
Montana homeowners file an informal review (AB-26) with the Department of Revenue, then appeal to the County Tax Appeal Board, then the Montana Tax Appeal Board. The state is responsive to comparable sales evidence.
When to file in Bonner
AB-26 must be filed within 30 days of receiving the assessment notice — typically July or August depending on county.
Common Bonner Property Types
Bonner homeowners typically file protests across these property categories:
Single-family homes
The most common residential type and the dominant protest category.
Condominiums
Common in denser parts of the city and near employment centers.
Townhouses
Attached-home neighborhoods in newer subdivisions.
Small multi-family
Duplexes and 2-4 unit buildings assessed as income property.
Commercial
Retail, office, and small commercial along major corridors.
ProtestMax supports all of the above property types in Bonner. Each appealpacket is tailored to the property's classification and uses comparable sales from Bonner and surrounding Missoula County neighborhoods.