Montana Income Tax Brackets — 2026

Find your tax bracket based on income and filing status. Compare federal and state tax rates side by side.

Quick Montana Tax Estimate

Based on Montana's tax rates for 2026. Enter your details for a personalized calculation.

State Tax on $80K Profit
$1,985.66
SE Tax
$11,303.64
Effective Rate
22.6%
Marginal Rate
12%
Full Montana Tax Calculator →

Montana Tax Information

State Income TaxYes
Top Marginal Rate6%
Sales Tax0%
LLC Filing Fee$0
Annual Report Fee$None
Standard DeductionN/A

Self-employed pay both federal and Montana state tax.

Montana Income Tax Brackets (2026)

Tax RateFromTo
4.7%$0$47,500
5.7%$47,500No limit

Montana Quarterly Tax Deadlines

Q1
Apr 15
Q2
Jun 16
Q3
Sep 15
Q4
Jan 15

Frequently Asked Questions

What are the 2026 tax brackets for Montana?
Federal brackets range from 10% to 37%. Montana tax rates are shown above on this page. Compare your marginal rate to understand how each additional dollar of income is taxed.
How does Montana income tax compare to other states?
Nine states (AK, FL, NV, NH, SD, TN, TX, WA, WY) have no income tax. Montana rates are shown above. Use our state comparison tool to compare tax burdens across states.
What is the standard deduction in Montana?
The federal standard deduction for 2026 is $16,100 (single) or $32,200 (married joint). Montana may have its own standard deduction — check the details on this page.
Do I pay Montana tax if I work remotely for an out-of-state company?
Generally, you pay tax in the state where you physically work. If you work remotely from Montana, you owe Montana income tax on that income. Some states have reciprocity agreements.
What's my marginal tax rate in Montana?
Your marginal rate is the tax rate on your last dollar of income. For 2026, federal rates are 10%, 12%, 22%, 24%, 32%, 35%, or 37%. Combined with Montana rates, use our calculator to find your exact marginal rate.