Montana Income Tax Calculator
Use this free income tax calculator customized with Montana-specific tax rates, costs, and financial data.
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Frequently Asked Questions
What is the Montana state income tax rate?
Montana has a top marginal income tax rate of 5.9%. The state uses a progressive tax system with 2 brackets.
Does Montana have a flat or progressive income tax?
Montana uses a progressive income tax system with 2 brackets ranging from 4.7% to 5.9%.
How do I file my Montana state income tax return?
Montana residents must file a state income tax return with the Montana Department of Revenue (or equivalent agency). Most taxpayers can file electronically. The deadline typically aligns with the federal tax deadline of April 15.