Montana Income Tax Guide for 2024

Overview

Montana uses a progressive income tax system with rates ranging from 4.7% to 5.9%. Capital gains are taxed at separate rates ranging from 3% to 4.1%. The state offers a standard deduction of $14,600 for single filers.

Income Tax Rates

Single Filers

Income RangeTax Rate
Up to $20,4994.7%
$20,500+5.9%

Married Filing Jointly

Income RangeTax Rate
Up to $40,9994.7%
$41,000+5.9%

Capital Gains Tax

Single Filers

Income RangeTax Rate
Up to $20,4993%
$20,500+4.1%

Married Filing Jointly

Income RangeTax Rate
Up to $40,9993%
$41,000+4.1%

Deductions & Exemptions

TypeAmount
Standard Deduction (Single)$14,600
Standard Deduction (Married Filing Jointly)$29,200

Additional Information

  • Age 65+ subtraction of $5,500 ($11,000 if both spouses are 65 or older)
  • From 2024 Montana taxable income starts from federal taxable income, so the federal standard deduction applies; the former Montana standard deduction and personal and dependent exemptions no longer exist
  • Long-term capital gains taxed at 3.0% within the first bracket and 4.1% above it

Charts

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Sources

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Last updated: September 15, 2026

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