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Montana Income Tax Calculator
Estimate your 2026 Montana state and federal income tax liability for W-2, self-employment, and investment income.
Montana
Total Tax Liability
$10,803
for 2026
Income
Gross Income $75,000
Adjusted Gross Income $75,000
Standard Deduction -$16,100
Taxes
Federal Income Tax
$7,670 State Tax
$3,133Total Tax $10,803
After-Tax Income
$64,197Effective Rate
14.4%
Federal Marginal
22.0%
Cap Gains Rate
15.0%
State Rate
5.7%
This calculator provides estimates based on 2026 federal and state tax rates using the standard deduction. Actual tax liability may vary based on itemized deductions, tax credits, AMT, and other factors. Consult a tax professional for personalized advice.
How Montana taxes your income
Progressive — 4.7% to 5.65%
Montana income tax brackets (single filer)
$0 – $20,500 4.7%
$20,501+ 5.65%
Married-filing-jointly thresholds differ; the calculator above handles all filing statuses.
Montana income tax questions.
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