Montana Income Tax Brackets 2026
Montana taxes income in 2 brackets from 4.7% to 5.65% for 2026; the top rate of 5.65% applies to taxable income over $47,500 for a single filer.
Montana brackets for 2026
Single
| Taxable income | Rate |
|---|---|
| $0 to $47,500 | 4.7% |
| Over $47,500 | 5.65% |
Married filing separately
| Taxable income | Rate |
|---|---|
| $0 to $47,500 | 4.7% |
| Over $47,500 | 5.65% |
Head of household
| Taxable income | Rate |
|---|---|
| $0 to $71,250 | 4.7% |
| Over $71,250 | 5.65% |
Married filing jointly
| Taxable income | Rate |
|---|---|
| $0 to $95,000 | 4.7% |
| Over $95,000 | 5.65% |
- Montana starts from federal taxable income, so the federal standard deduction already applies. The top rate falls to 5.65% for 2026 and 5.4% for 2027.
Montana income tax on common incomes
Single filer, wages only, standard deduction, 2026 rates. Federal tax is extra.
| Income | Montana tax | Average rate | Rate on the last dollar |
|---|---|---|---|
| $30,000 | $653 | 2.2% | 4.7% |
| $50,000 | $1,593 | 3.2% | 4.7% |
| $75,000 | $2,877 | 3.8% | 5.65% |
| $100,000 | $4,289 | 4.3% | 5.65% |
| $150,000 | $7,114 | 4.7% | 5.65% |
| $200,000 | $9,939 | 5% | 5.65% |
| $300,000 | $15,589 | 5.2% | 5.65% |
Federal brackets
Federal income tax applies on top of Montana's. US federal brackets for 2026.
Frequently asked questions
What are the Montana income tax brackets for 2026?
Montana taxes income in 2 brackets from 4.7% to 5.65% for 2026; the top rate of 5.65% applies to taxable income over $47,500 for a single filer.
How much state income tax is owed on $75,000?
About $2,877 for a single filer with no other deductions: an average rate of 3.8%, with the last dollar taxed at 5.65%.
Does moving into a higher bracket mean all my income is taxed more?
No. Each rate applies only to the part of taxable income inside its bracket, so a raise that crosses into a higher bracket is taxed at the higher rate only above the threshold.
Take-home pay in Montana
Sources
- Montana Department of Revenue, HB 337: tax year 2026 rates (4.7% and 5.65%) and brackets; Montana taxable income starts from federal taxable income (brackets, tax base; checked October 15, 2026)
- Montana Publication 1 (2026), A Guide to Montana Tax Withholding (2026 rates; checked October 15, 2026)
Estimates for information only; not tax, legal or financial advice. See our methodology.