Montana income tax rates for 2026
Montana has rates from 4.7% to 5.65%; for single filers the top rate of 5.65% starts above $47,500 of Montana taxable income. Montana starts from your federal taxable income.
| Rate | Single | Married filing jointly | Head of household |
|---|---|---|---|
| 4.7% | $0 – $47,500 | $0 – $95,000 | $0 – $71,250 |
| 5.65% | Over $47,500 | Over $95,000 | Over $71,250 |
Montana standard deduction and exemptions
| Item | Single | Married filing jointly |
|---|---|---|
| Starting point | Federal taxable income | Federal taxable income |
Because Montana begins with federal taxable income, the federal standard deduction ($16,100 single, $32,200 joint) or your itemized deductions carry over.
How much Montana income tax will I pay?
Estimated 2026 tax for a single filer with wage income, the standard deduction and no dependents:
| Wages | Montana tax | State effective rate | Federal income tax | Total income tax | Combined rate |
|---|---|---|---|---|---|
| $40,000 | $1,123 | 2.81% | $2,620 | $3,743 | 9.4% |
| $60,000 | $2,063 | 3.44% | $5,020 | $7,083 | 11.8% |
| $80,000 | $3,159 | 3.95% | $8,770 | $11,929 | 14.9% |
| $100,000 | $4,289 | 4.29% | $13,170 | $17,459 | 17.5% |
| $150,000 | $7,114 | 4.74% | $24,734 | $31,848 | 21.2% |
| $250,000 | $12,764 | 5.11% | $51,304 | $64,068 | 25.6% |
At $100,000, for example, Montana takes about $4,289 and the combined income tax bill is $17,459. Your marginal rate on the next dollar at that income is 27.65% (22% federal + 5.65% Montana). These estimates apply Montana’s brackets, standard deduction, exemptions and credits from our data; local taxes and rules the notes below mark as not modeled are left out.
How Montana compares with neighboring states
On a $75,000 salary, a single filer pays $2,877 in Montana income tax, the 33rd-lowest among the 50 states and DC. The median across all of them is $2,588.
| State | State tax on $75,000 | Effective rate | Rates | National rank |
|---|---|---|---|---|
| South Dakota | $0 | 0% | No wage tax | 1 of 51 |
| Wyoming | $0 | 0% | No wage tax | 1 of 51 |
| North Dakota | $182 | 0.24% | 0%–2.5% | 10 of 51 |
| Idaho | $2,860 | 3.81% | Flat 5.3% | 32 of 51 |
| Montana | $2,877 | 3.84% | 4.7%–5.65% | 33 of 51 |
Compare Montana with Idaho, North Dakota, South Dakota and Wyoming.
Montana tax rules to know
Key points from our 2026 Montana data, compiled from the official sources listed at the end of this page:
- HB 337 (2025) cuts the top rate from 5.9% to 5.65% for 2026 and widens the 4.7% bracket to $47,500 (single and MFS), $71,250 (head of household) and $95,000 (joint).
- For 2027 the top rate falls to 5.4%, and the 4.7% bracket rises to $65,000 single / $130,000 joint.
- Since 2024, Montana taxable income starts from federal taxable income, adjusted by Montana additions and subtractions. So the 2026 federal standard deduction (the values shown) and other federal deductions flow through, and there are no personal exemptions.
- Net long-term capital gains get lower rates: 3.0% on the portion in the lower bracket and 4.1% above it. Not modeled in the brackets.
- HB 337 also doubles the Montana earned income tax credit to 20% of the federal credit.
Local income tax: none. Cities and counties in Montana do not levy their own income tax in our 2026 data.
More 2026 tax tools
See the 2026 federal brackets and standard deduction, estimate each paycheck with the paycheck calculator, or compare income tax in every state.
Frequently asked questions
What is the Montana income tax rate for 2026?
Montana has rates from 4.7% to 5.65% for 2026. For single filers the top rate of 5.65% applies to Montana taxable income over $47,500. Because the rate applies to taxable income after deductions, the share of total income you pay is lower: about 3.84% for a single filer earning $75,000. At $100,000 of wages, a single filer would owe about $4,289 in Montana income tax.
How much is Montana income tax on $75,000?
A single filer with $75,000 in wages owes about $2,877 in Montana income tax for 2026, based on Montana taxable income of about $58,900. Federal income tax adds $7,670 and Social Security and Medicare $5,738, leaving about $58,716. A married couple earning $150,000 would owe about $5,753 in state tax.
What is the Montana standard deduction for 2026?
Montana starts from federal taxable income, so the federal standard deduction ($16,100 single, $32,200 married filing jointly for 2026) or your federal itemized deductions carry over to your Montana return. Montana then adds or subtracts its own adjustments before applying its rate. Enter your details above to see the estimated Montana tax on your income.
Does Montana have local income taxes?
No. Our 2026 data shows no local (city or county) income taxes in Montana, so the state and federal income tax estimated here, plus Social Security and Medicare, cover the income taxes on your wages. A single filer earning $75,000 pays about $10,547 in combined federal and Montana income tax.
How does Montana income tax compare with nearby states?
On a $75,000 salary, a single filer pays about $2,877 in Montana income tax, the 33rd-lowest among the 50 states and DC. Among neighbors, South Dakota would take $0 and Idaho $2,860. The national median is $2,588. Income tax is only one part of the picture; sales and property taxes also differ by state.
Is this Montana tax estimate exact?
It is an estimate. We apply Montana’s 2026 brackets, standard deduction, exemptions and credits to your income, starting from federal taxable income. We do not model every Montana subtraction, credit or phase-out, and federal figures leave out the AMT and the QBI deduction. Use it for planning and check your actual return or Montana’s tax agency for final numbers.