Montana Income Tax for Head of Household (2026)
Filing as a Head of Household in Montana? Heres everything you need to know about the state income tax: brackets, standard deduction, and worked examples for common income levels.
Montana Tax Brackets (2026)
For Head of Household in Montana, the tax brackets for 2026 are:
| Taxable Income | Tax Rate |
|---|---|
| $0 - $21,100 | 4.7% |
| $21,100 - $52,800 | 5.9% |
| $52,800 - $100,500 | 6.75% |
The standard deduction for Head of Household in Montana is $21,900. You can take this deduction or itemize, whichever results in a lower tax bill.
$75,000 Income Example
Lets say youre a Head of Household in Montana earning $75,000/year. After the $21,900 standard deduction, your taxable income is $53,100. Your Montana state tax is approximately:
Your effective state tax rate is 3.8%. This is on top of federal income tax (and local taxes if applicable).
More Examples for Head of Household in Montana
| Gross Income | Taxable Income | State Tax | Effective Rate |
|---|---|---|---|
| $50,000 | $28,100 | $1,404 | 2.8% |
| $75,000 | $53,100 | $2,882 | 3.8% |
| $100,000 | $78,100 | $4,569 | 4.6% |
| $150,000 | $128,100 | $11,164 | 7.4% |
| $200,000 | $178,100 | $14,539 | 7.3% |
Montana-Specific Deductions and Credits
Beyond the standard deduction, Montana offers several tax deductions and credits that can reduce your tax bill:
- Retirement income exclusion: Some states exclude retirement income for seniors
- Property tax credit: Available in some states for homeowners and renters
- Earned Income Tax Credit (EITC): Some states have their own EITC in addition to the federal one
- Child and dependent care credit: Available in many states
- Education credits: 529 plan contributions or tuition deductions may be available
Use the Montana income tax calculator to model your specific situation, including deductions and credits.
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Filing Montana state taxes depends on your residency status:
- Montana residents: File Form ST-MT-1 with your state Department of Revenue. Due April 15 (same as federal).
- Part-year residents: File Form ST-MT-1-PR, reporting only income earned while a resident
- Non-residents: File Form ST-MT-1-NR if you earned income in Montana
Frequently Asked Questions
What is the Montana tax bracket for Head of Household?
The Montana tax brackets for Head of Household range from 4.7% to 6.75%. The standard deduction is $21,900.
How much Montana tax do I owe on a $75K income as a Head of Household?
On a $75,000 income as a Head of Household in Montana, you owe approximately $2,882 in state income tax. Your effective state tax rate is 3.8%.
What is the standard deduction for Head of Household in Montana?
The standard deduction for Head of Household in Montana is $21,900. You can take this or itemize, whichever is higher.