Montana DOR Adopts New Property Tax Relief Rules Effective January 2026

The Montana Department of Revenue (DOR) published a notice announcing the adoption of new rules to implement property tax relief legislation enacted by the 69th Montana Legislature. The notice adopts NEW RULE 1 (42.19.203), NEW RULE 2 (42.19.204), NEW RULE 3 (42.19.205), and NEW RULE 4 (42.19.206), which were adopted as proposed with minor corrections following public comments and went into effect on Jan. 10, 2026. [Montana Dep’t of Revenue, MAR Notice No. 2025-430.2, 01/10/26]

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