Montana Tax Calculators.
Tax year 2026 income tax rates, brackets, and sales tax for Montana. Returns for tax year 2026 are generally filed in 2027; source links and last-verified dates are shown below.Tax year 2026 means income earned during calendar year 2026; those returns are generally filed in 2027. State and local sales tax rates can change during the year, so confirm current rules before filing or remitting tax.
Income Tax
For 2026, Montana taxes the first $47,500 of ordinary taxable income for single filers, $95,000 for joint filers or $71,250 for heads of household at 4.7%. Ordinary income above those amounts is taxed at 5.65%. For 2026, Montana uses federal basic standard deductions of $16,100 for single filers, $32,200 for joint filers and $24,150 for heads of household. This ordinary-income estimate excludes additional deductions, net long-term capital gains, other adjustments and credits.
| Taxable Income | Rate |
|---|---|
| $0 - $47,500 | 4.7% |
| Over $47,500 | 5.65% |
Sales Tax
Montana has no general state sales tax. Certain resort communities may impose a separate local resort tax; its coverage and rate depend on local rules. Combined rates shown are population-weighted July 1, 2026 estimates; actual item and local rates vary.
Montana’s top marginal ordinary-income rate is 5.65%. It has no general state sales tax, while local resort taxes and other taxes can still apply; those facts do not establish an overall household ranking.
What is Montana's income tax rate?
For 2026, Montana taxes the first $47,500 of ordinary taxable income for single filers, $95,000 for joint filers or $71,250 for heads of household at 4.7%. Ordinary income above those amounts is taxed at 5.65%.
Does Montana have a sales tax?
Montana has no general state sales tax. Certain resort communities can impose a separate resort tax under local rules.
How does Montana fund its government without sales tax?
Montana has individual and business income taxes, property taxes, natural-resource taxes on activities including coal, metals, oil and natural gas, and other taxes and fees. This list identifies revenue sources; it does not state their relative shares.
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