Does Montana have a state income tax?

Yes. Montana has a progressive income tax with rates from 4.7% to 5.65%.

What is the income tax rate in Montana?

Rates range from 4.7% to 5.65% across 2 brackets, in addition to federal income tax. Montana allows the federal standard deduction ($16,100, or $32,200 for married couples filing jointly).

How much income tax will I pay in Montana on $75,000?

On $75,000 of W-2 income (single filer), an estimated $10,547 in total income tax — including about $2,877 to Montana, leaving roughly $64,453 after income tax (before FICA payroll taxes). Adjust income and filing status in the calculator above for your exact numbers.

What is the effective tax rate in Montana on $75,000?

About 14.06% combined federal and state income tax for a single filer, of which roughly 3.84% is Montana state tax. FICA payroll taxes (7.65% for most employees) come on top of that.

How accurate is this calculator?

Estimates use 2026 federal and state tax rates, and each state's own brackets, standard deduction and personal exemptions for your filing status. Your actual liability varies with itemized deductions, dependents, other credits, local taxes, and other income.

Free Tool

Montana Income Tax Calculator

Estimate your 2026 Montana state and federal income tax liability for W-2, self-employment, and investment income.

On $75,000 of W-2 income, a single filer in Montana owes about $10,547 in income tax for 2026 — $7,670 federal plus $2,877 to Montana — leaving roughly $64,453 before FICA payroll taxes.

Filing status

State

W-2 wages

Self-employment income

Interest income

Total tax liability

$10,547

for 2026

Include payroll taxes

Gross income $75,000

Federal standard deduction -$16,100

Adjusted Gross Income $75,000

Federal Income Tax 10.2%

-$7,670

State Tax 3.8%

-$2,877

After-Tax Income 85.9%

$64,453

Effective Rate

14.1%

Federal marginal

22.0%

Cap gains rate

15.0%

State rate

5.7%

Your $64,453 after tax: plan the year around it Treasury connects your accounts and budgets from what you actually keep, not your gross.

This calculator provides estimates based on 2026 federal and state tax rates, the federal standard deduction, and each state's own deductions and exemptions for your filing status. Actual tax liability may vary based on itemized deductions, tax credits, AMT, local taxes, and other factors. Consult a tax professional for personalized advice.

2026 federal tables from IRS Rev. Proc. 2025-32; Montana rates from the state's revenue department and statutes (2026 rates; brackets, standard deduction and exemptions from the latest published state tables, 2025 where the state has not released 2026 figures). Reviewed by Junead Khan. Last updated September 17, 2026.

How Montana taxes your income

Progressive — 4.7% to 5.65%

Montana income tax brackets

Single

$0 – $47,500 4.7%

$47,501+ 5.65%

Married filing jointly

$0 – $95,000 4.7%

$95,001+ 5.65%

Rates apply to taxable income. The calculator above uses the schedule for your filing status, including head of household where the state has its own.

Montana allows the federal standard deduction ($16,100, or $32,200 for married couples filing jointly).