Montana DOR Announces Individual Income Tax Rate Changes

The Montana Department of Revenue (DOR) announced changes to the state’s individual income tax rates and brackets for tax years 2026 and 2027 under House Bill 337. The bill expands the lower tax rate bracket and reduces the upper rate, with the new rates and income thresholds varying based on filing status for each year. It also adjusts the long-term capital gains brackets, increases the Montana earned income tax credit to 20 percent of the federal credit starting in 2026. [Mont. Dep’t of Revenue, 2026–2027 Montana Individual Income Tax Changes, 11/14/25]

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