Property Tax Guide:

Montana

Montana has an effective property tax rate of 0.74%, with a median annual property tax of $2,315. Properties are assessed at 1.35% of market value and reassessed every 2 years (reappraisal cycle; phased in over 2-year period). Payments are due semi-annual.

Effective Rate
0.74%
Assessment Ratio
1.4%
Median Annual Tax
$2,315
Payment Frequency
Semi-Annual
Appeal Deadline
Within 30 days of classification and appraisal notice (typically by the first Monday in June) to County Tax Appeal Board
Due Dates
First half due November 30; second half due May 31
Reassessment Cycle
Every 2 years (reappraisal cycle; phased in over 2-year period)
Homestead Exception
No traditional homestead exemption. Residential property taxed at lower rate (1.35% of market value is taxable). Property tax assistance program (PTAP) for low-income seniors/disabled.
Key Notes
Complex tax rate system: residential property taxed at 1.35% of market value, then mill levy applied to that amount. No sales tax. Legislature has adjusted residential rate to mitigate property tax growth.
Late Penalty
2% penalty immediately upon delinquency; plus 5/6% per month interest (10% annually)

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