Montana Salary & Tax Calculator
Montana's top marginal state income tax rate is pre-filled below (5.9%). Adjust it if you want to blend in federal withholding for a fully combined effective rate.
*Estimates only, illustrative and not tax or financial advice. Actual Montana and federal taxes may vary — consult a tax professional for precise figures.
Wondering how much house you can afford with your net pay?
Mortgage Loan CalculatorMontana taxes income under a simplified two-bracket system, with a top marginal rate of 5.9% that applies to most middle- and upper-income earners across the state. That puts Montana in the middle of the pack among its regional neighbors — lower than nearby states with income tax in the high single digits, but well above Wyoming and South Dakota, which charge no state income tax at all. What makes Montana's tax picture distinctive is the absence of any general state sales tax: unlike most states, Montana residents don't pay a percentage on top of retail purchases, which meaningfully offsets the impact of the 5.9% income tax rate for day-to-day spending. This calculator pre-fills the top state rate so you get a realistic combined-tax estimate right away, but keep in mind your actual effective rate will usually be lower than 5.9% once Montana's bracket structure and any applicable credits are factored in. No Montana city or county levies a separate local income tax, so whether you work in Billings, Missoula, or a smaller town, the state rate is the whole story at the local level.
🏆 Decoding Your Montana Paycheck
Everything you need to know about using this calculator and the math behind it.
How it Works
Strips away estimated federal and Montana state taxes plus common deductions from your gross salary to reveal your actual take-home (net) pay.
The Formula
Net Pay = Gross Pay − (Federal Tax + Montana State Tax (up to 5.9%) + FICA + Pre-tax Deductions).
Pro Tip
Montana has no state sales tax, so factor that in when comparing your total cost of living to a sales-tax state — the effective savings can be significant.
Frequently Asked Questions
What is Montana's top state income tax rate? +
Montana's top marginal state income tax rate is 5.9%, applied to a simplified two-bracket structure after the state's 2021-2024 tax reforms collapsed what used to be seven brackets. Most middle- and higher-income earners in Montana land in or near this top bracket, so 5.9% is a reasonable starting estimate for the state-tax share of your paycheck.
How does Montana compare to its neighboring states? +
Montana's 5.9% top rate is close to Idaho's flat 5.695% rate, but far above Wyoming and South Dakota, which have no state income tax at all. Compared to North Dakota (up to 2.5%), Montana taxes income more heavily, but Montana also has no state sales tax, which offsets some of that gap for everyday spending.
Does Montana have a state sales tax? +
No. Montana is one of five states with no general state sales tax, alongside Alaska, Delaware, New Hampshire, and Oregon. This means the 5.9% income tax is essentially the state's primary lever for individual tax revenue, without a sales tax cushioning the comparison the way it does in states like Florida.
Do Montana cities add a local income tax? +
No. Montana does not authorize cities or counties to levy a separate local income tax on wages. The 5.9% top state rate plus federal tax and FICA is generally the full income-tax picture for a Montana resident, regardless of which city — Billings, Missoula, Bozeman — you live in.
Is this calculator accurate for my exact Montana tax bill? +
This tool gives an estimate using a single blended effective rate, not Montana's actual bracket-by-bracket calculation or its state-specific deductions and credits (like the Montana earned income credit). For an exact figure, especially near bracket boundaries, use Montana Department of Revenue withholding tables or consult a tax professional.