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Tax year 2026. Federal, FICA, and state rules last checked . How we calculate

Montana state income tax 2026

Montana uses progressive brackets, with rates from 4.7% to 5.65%. For a single filer earning $65,000, our simplified 2026 estimate is $2,543, about 3.91% of wages.

Last reviewed . Data: 2026 tax year (laws enacted through mid-2026).

Tax type
Progressive brackets
Rate
4.7%–5.65% progressive
Estimated tax on $65,000 (single filer)
$2,543
Local income taxes
None

How Montana taxes wages

Two brackets; the top rate drops to 5.65% for 2026. Starts from federal taxable income.

At $65,000 of wages, that is the 26th-lowest estimated bill of the 42 jurisdictions (including DC) that tax wages.

Its top rate of 5.65% is the 17th-highest among the 26 jurisdictions with progressive brackets.

Rates range from 4.7% to 5.65%. We don’t list the full bracket schedule here yet; for exact thresholds, see the official Montana tax agency website.

Example: $65,000 salary, single filer

State income tax on a $65,000 salary
Wages$65,000
Income not taxed (approx. deduction, exemptions, 0% bracket)−$16,100
Income taxed$48,900
Average rate used for the estimate× 5.2%
Estimated Montana income tax$2,543

That works out to about $212 a month, or an effective rate of 3.91% of wages.

Calculators for Montana

  • Paycheck calculator

    Take-home pay after federal income tax, Social Security, Medicare, and Montana income tax, with Montana selected.

  • Tips and overtime calculator

    Your federal deduction for qualified tips and overtime, with Montana selected and its state rules applied to the Montana estimate.

  • Senior deduction calculator

    A federal deduction of up to $6,000 for each person 65 or older, after the income phase-out.

  • Car loan interest calculator

    A federal deduction for interest on a loan for a new, U.S.-assembled vehicle.

Does Montana tax tips and overtime?

Montana follows the federal tips and overtime deduction. Montana starts from federal taxable income, so the Schedule 1-A deductions “are included in the calculation of Montana taxable income.”

The example on this page taxes full wages. The tips and overtime calculator subtracts the deduction for your tips and overtime before it estimates your Montana tax.

Source: Montana DOR: 2025 Form 2 instructions (PDF), Tax year 2025. Checked . See how every state treats tips and overtime

To see your federal deduction and Montana tax together, open the tips and overtime calculator with Montana selected.

Montana vs. neighboring states

Montana has the highest estimated bill among its neighbors. Workers in South Dakota, Wyoming, North Dakota, and Idaho would owe less on the same salary.

StateEst. tax on $65,000vs. Montana
South Dakota$0−$2,543
Wyoming$0−$2,543
North Dakota$8−$2,535
Idaho$2,337−$206

Official source

For forms, exact brackets, and filing deadlines, go to the official Montana tax agency website.

All states and DC on the map

Estimates cover Montana income tax on wages for a single filer and exclude local taxes and state credits. They are not tax advice. See our disclaimer and how we calculate.