MCA § 15-6-134

Montana Real Estate Calculators

Montana's Class 4 residential 1.35% statewide rate (post-HB-231 2024 reduction from 1.89%), the § 15-6-301 Property Tax Assistance Program for age 62+ or disabled owners on the first $350K of value, and the 2-year reappraisal cycle.

Anchored to: MCA §§ 15-6-134, 15-6-301; HB 231 (2024)

1 calculator live. Reviewed against current statute and regulation. Last updated 2026-05-16.

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Mont. Code Ann. Title 15 Ch. 7 (assessment)

Montana Property Tax Calculator

Compute a Montana property's annual tax bill under Title 15, Ch. 7 of the Montana Code Annotated. Models the Class 4 residential 1.35% statewide assessment rate (MCA § 15-6-134 — recently reduced from 1.89% as part of HB 231 (2024) reappraisal rebalancing), the twelve-class statutory system (MCA § 15-6-101), the 2-year reappraisal cycle (MCA § 15-7-111), and the Property Tax Assistance Program (PTAP) under MCA § 15-6-301 (income-tested reduced assessment for owners age 62+, disabled, or meeting income requirements, applied on the first $350,000 of market value).

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Montana Property Tax Calculator
Compute a Montana property's annual tax bill under Title 15, Ch. 7 of the Montana Code Annotated. Models the Class 4 residential 1.35% statewide assessment rate (MCA § 15-6-134 — recently reduced from 1.89% as part of HB 231 (2024) reappraisal rebalancing), the twelve-class statutory system (MCA § 15-6-101), the 2-year reappraisal cycle (MCA § 15-7-111), and the Property Tax Assistance Program (PTAP) under MCA § 15-6-301 (income-tested reduced assessment for owners age 62+, disabled, or meeting income requirements, applied on the first $350,000 of market value).

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Every YMYL calculator is reviewed quarterly and after every legislative session in the jurisdiction it covers. Citations are link-validated monthly against the relevant statute and regulation websites. The methodology page documents the discipline.

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