Montana has seven marginal tax brackets, ranging from 1.00% (the lowest Montana tax bracket) to 6.90% (the highest Montana tax bracket). Each marginal rate only applies to earnings within the applicable marginal tax bracket, which are the same in Montana for single filers and couples filing jointly. The Federal Income Tax, by contrast, has different tax brackets for married, single, and Head of Household taxpayers.

Technically, you don't have just one "tax bracket" - you pay all of the Montana marginal tax rates from the lowest tax bracket to the tax bracket in which you earned your last dollar. For comparison purposes, however, your Montana tax bracket is the tax bracket in which your last earned dollar in any given tax period falls.

You can think of the bracketed income tax as a flat amount for all of the money you earned up to your highest tax bracket, plus a marginal percentage of any amount you earned over that.

• Single Tax Brackets
• Couples Tax Brackets

You can use the income tax estimator to the left to calculate your approximate Montana and Federal income tax based on the most recent tax brackets.

Keep in mind that this estimator assumes all income is from wages, assumes the standard deduction, and does not account for tax credits.

For a more detailed estimate that takes these factors into account, click "View Detailed Estimate" (this will will redirect to an external website).

When calculating your Montana income tax, keep in mind that the Montana state income tax brackets are only applied to your adjusted gross income (AGI) after you have made any qualifying deductions.

Qualifying deductions might include an itemized deduction, the Montana standard deduction, exemptions for dependants, business expenses, etc.

Remember that Montana may have very different deduction laws from the Federal Income Tax, so you may have to write a whole new list of deductions for your Montana income tax return.

	Download a .CSV file of the Montana income tax brackets
	Download all 2013 state income tax tables as a PDF

1. The Montana tax brackets on this page were last updated from the Montana Department of Revenue in November, 2012. Please contact us if any of our Montana tax data is incorrect or out of date.
2. Montana tax return forms and the latest tax tables are available from the Department of Revenue .
3. Before the official 2013 Montana income tax brackets are released, the brackets used on this page are an estimate based on the previous year's brackets. These numbers are subject to change if new Montana tax tables are released.
4. The income tax estimator tool is provided by Tax-Rates.org.