Payroll & Tax

Montana Paycheck Calculator 2025–26

Updated June 2026
2025–26 MT & Federal tax rates
Reviewed by a CPA
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Montana's 2024 Tax Reform: From Seven Brackets to Two, Who Saved Money and Who Paid More

Montana overhauled its income tax in 2024, replacing a seven-bracket system (1% to 6.9%) with a simpler two-bracket structure (4.7% and 5.9%). The reform was marketed as a tax cut, but the reality is more nuanced. Workers earning below approximately $57,000 per year pay slightly more under the new system because the old lowest brackets (1%–3%) were well below the new 4.7% bottom rate. Workers above $57,000 benefit, with savings increasing at higher incomes.

Old (2023) MT Tax: 1%–6.9% across 7 brackets starting at $3,400
New (2025) MT Tax: 4.7% on first $20,080 | 5.9% above $20,080
$65,000 → $50,400 taxable → old $2,805 vs new $2,733 = $72 saved
Annual SalaryOld 7-Bracket TaxNew 2-Bracket TaxAnnual ChangeMonthly Change
$30,000$674$724+$50 (costs more)+$4/mo
$50,000$1,770$1,848+$78 (costs more)+$7/mo
$65,000$2,805$2,733−$72 saved−$6/mo
$85,000$4,185$3,913−$272 saved−$23/mo
$100,000$5,220$4,798−$422 saved−$35/mo
$150,000$8,670$7,748−$922 saved−$77/mo

Single filers, standard deduction applied before brackets. Old tax uses the pre-2024 seven-bracket system (1%–6.9%). New tax uses 2025 two-bracket structure (4.7%–5.9%). Crossover point where new system becomes cheaper is approximately $57,768 gross.

Montana Has No Sales Tax: How the Zero Sales Tax Partially Offsets the 4.7%–5.9% Income Tax for Working Residents

Montana is one of only five U.S. states with no statewide sales tax. This matters for take-home pay comparisons: Wyoming also has no income tax, but charges a sales tax of approximately 4%–5.5% depending on county. For a Montana resident spending around $25,000 per year on taxable goods, the zero sales tax saves roughly $1,000–$1,400 annually, partially (but not fully) offsetting Montana's income tax bill.

Annual SalaryMT Income TaxWY Income TaxMT Sales Tax*WY Sales Tax*Net: MT vs WY
$40,000$724$0$0$1,250MT saves $526/yr
$65,000$2,733$0$0$1,250MT costs $1,483/yr more
$85,000$3,913$0$0$1,250MT costs $2,663/yr more
$100,000$4,798$0$0$1,250MT costs $3,548/yr more
$150,000$7,748$0$0$1,250MT costs $6,498/yr more

*Assumes $25,000/year in taxable goods spending. WY sales tax estimated at 5% (4% state + ~1% county average). Wyoming has no state income tax. Net figure shows annual difference between total income + sales tax burden. For a $40K earner, MT's lower income tax actually beats Wyoming's sales tax; above ~$50K, Wyoming becomes cheaper overall.

Five Montana Paycheck Calculation Errors That Produce Wrong Take-Home Estimates

Using the old seven-bracket rates instead of the current two-bracket structure
Montana replaced its 1%–6.9% seven-bracket system with a 4.7%–5.9% two-bracket system effective 2024. If you reference older Montana tax tables, you will get the wrong result. This calculator uses the current 2025 rates.
Applying the top 5.9% rate to your full taxable income
The 5.9% rate only applies to taxable income above $20,080 (single). The first $20,080 of Montana taxable income is taxed at 4.7%. At $65,000, about $30,320 is in the 5.9% bracket and $20,080 is in the 4.7% bracket. Your effective Montana state rate at $65,000 is about 4.2%, not 5.9%.
Assuming 401(k) contributions don't reduce Montana taxes
Montana conforms to federal 401(k) treatment. Traditional pre-tax contributions lower both your federal and Montana taxable income. A 6% contribution on $65,000 ($3,900) saves approximately $226 in Montana state tax on top of the federal savings.
Forgetting Montana taxes Social Security income
This calculator covers wage income only. If you also receive Social Security benefits, Montana will include most of that income in your taxable income (with some exceptions for lower earners). Retirees in Montana should consult a tax professional for their full Montana liability.
Assuming no sales tax means Montana is cheaper than Wyoming overall
Montana's no-sales-tax benefit only offsets income taxes for lower-income earners. Above roughly $50,000 in salary, Wyoming residents (with zero income tax) typically end up paying less total state tax overall even accounting for Wyoming's sales tax, unless you have very low taxable spending.

Frequently Asked Questions

Montana simplified its income tax to two brackets in 2024. For 2025, the rates are 4.7% on the first $20,080 of taxable income (single filers) and 5.9% on income above that amount. Married filers have a wider bottom bracket of $40,160. Montana previously used seven graduated brackets with a top rate of 6.9%, so the reform significantly reduced rates for higher earners.

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Sources & References

1
Source for Montana's two-bracket structure (4.7% on first $20,080 and 5.9% above), effective for tax year 2024 and 2025, and Montana's conformity to the federal standard deduction.
2
Source for 2025 federal income tax brackets, standard deduction amounts ($14,600 single / $29,200 married), and FICA withholding rates.
3
Source for the $176,100 Social Security wage base and 6.2% employee FICA rate for 2025.
HR
Hassaan Rasheed
Developer and Researcher, CalculatorFlux

Researches and verifies the formulas, methodology, and source data behind each calculator on CalculatorFlux. All tools are built and checked against the cited references before publication.

Last updated: June 2026
Montana Tax Rates 2025–26
TaxRate
MT Bracket 1 (first $20,080)4.70%
MT Bracket 2 (over $20,080)5.90%
MT Sales TaxNone (0%)
Social Security6.20%
Medicare1.45%
Standard Deduction 2025$14,600
SS Wage Base 2025$176,100
401(k) Limit 2025$23,500
Pro Tip
Montana's 2024 tax reform cut the top rate from 6.9% to 5.9%. Workers at $100,000+ save roughly $400–$900 per year compared to the old system. Lower earners should note that the new bottom bracket (4.7%) is higher than the old lowest brackets (1%–3%).
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