Montana Tax Calculator 2025
Estimate your federal and Montana state taxes for the 2025 tax year.
Pre-configured for Montana residents, 2025 tax year. Planning ahead? Montana Tax Calculator 2026 has the new 2026 brackets and enacted rate changes.
Your numbers
Pre-tax contributions
$2,200 federal Child Tax Credit each, applied to your 2025 liability.
Estimate your refund (optional)
Enter what was withheld this year — W-2 box 2 (federal) and box 17 (state) — to compare against your estimated liability.
$58,071 per year, shown per month
of gross income, all taxes
federal + MT on your next dollar
Estimate only, for a single W-2 earner taking the standard deduction. Itemized deductions and most credits beyond the Child Tax Credit aren't modeled.
Only the top slice pays 22%
Federal tax is progressive: each bracket taxes only the income inside it. Here is how your $59,250 of taxable income fills the 2025 brackets.
Understanding Montana Income Taxes
Residents of Montana pay state income tax on top of federal taxes. The amount you owe depends on your taxable income, filing status, and the deductions and credits Montana allows.
Key Takeaways for 2025
- Federal tax brackets and standard deductions have been adjusted for inflation (and raised retroactively by the One Big Beautiful Bill Act).
- Montana's own rates and exemptions are applied to your state estimate automatically.
- Don't forget FICA taxes (Social Security and Medicare) — they're withheld from your paycheck automatically and included in the take-home figure above.
Go Deeper on Your 2025 Taxes
Federal tax tools
- Federal Income Tax Calculator — brackets, deductions, and your effective rate
- Tax Bracket Calculator — see which bracket your income lands in
- Paycheck Tax Calculator — per-paycheck withholding and take-home
- Marriage Tax Calculator — filing jointly vs. separately
- W-4 Withholding Calculator — is your paycheck withholding on target?
- Estimated Tax Calculator — quarterly 1040-ES vouchers for 1099 income
- 2026 State Tax Changes — every enacted cut, verified
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Frequently Asked Questions
What are the Montana state income tax brackets for 2025?
For the 2025 tax year, Montana has a graduated income tax: rates run from 4.7% to 5.9% across two brackets, with the top rate applying above $21,100 for single filers (married-filing-jointly brackets are wider). For 2026, HB 337 widens the 4.7% bracket to the first $47,500 ($95,000 joint) and cuts the top rate from 5.9% to 5.65%; a further cut to 5.4% follows in 2027.
How is Montana state income tax calculated?
Montana applies its bracket rates to your federal taxable income (income after the federal standard deduction). This calculator applies the latest published Montana figures automatically.
How much tax will I pay on a $75,000 salary in Montana?
Roughly $3,243 in Montana state income tax for a single filer taking the standard deduction in 2025. Add about $7,949 of federal income tax and $5,738 of FICA (7.65%), for total taxes near $16,929 and take-home around $58,071. Credits and other income can change this.
What percentage of your paycheck goes to taxes in Montana?
About 22.6% for a single filer earning $75,000 in 2025: federal income tax (~10.6%), FICA (7.65%), and Montana state tax (~4.3%). Your exact percentage depends on income, filing status, and pre-tax contributions like a 401(k).
Does Montana tax Social Security benefits?
Yes. Montana starts from federal taxable income, so the federally taxable portion of Social Security (up to 85%) is taxed at state rates with no additional state exclusion.
Does Montana tax retirement income like 401(k) or pension withdrawals?
Pensions, 401(k)/IRA withdrawals, and federally taxable Social Security are generally fully taxed; taxpayers 65+ get a modest $5,500 deduction. Long-term capital gains get separate lower rates (3.0%/4.1%).