Montana Income Tax Rate
Graduated Brackets
Montana taxes individual income at graduated rates rising to 5.65 percent across 2 brackets, ranking 18 of 41 among the states that tax income.
What “Graduated Brackets” means
Rates rise through brackets as income increases.
26 of 50 states are in the same category
Alongside Montana: Alabama, Arkansas, California, Connecticut, Delaware, Hawaii, Kansas, Maine, Maryland, Massachusetts, Minnesota, Missouri, and 13 more.
Source: Tax Foundation · as of January 2026 · last verified October 16, 2026
See every state in our income tax tracker, or everything we track for Montana.
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