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Montana income tax and brackets 2026

Montana taxes income at 2 rates in 2026, from 4.7% on the first $47,500 of a single filer's taxable income to 5.65% above $47,500. A single filer earning $75,000 in Montana owes about $10,547 in federal and state income tax, an effective rate of 14.1%.

Updated ·By the BooksGPT team·2026 rates
Your year
$a year
$a year
Deduction
$16,100 for single filers
Runs in your browser·2026 rates·What it leaves out
Income tax · 2026
See the brackets
$10,547for the year
Effective rate 14.1% of income
Federal income tax$7,67072.7%
Montana income tax$2,87727.3%
Taxable income
$58,900
Top federal rate
22%
Top Montana rate
5.65%

Montana tax brackets 2026

Montana brackets · 2026
4.7% to 5.65%
2 brackets
Your top bracket
5.65%
Average rate
4.9%
Taxable income
$58,900
How your $2,877 adds up
4.7% on the first $47,500$2,23377.6%
5.65% on the last $11,400$64422.4%
Montana brackets, single
Montana income tax brackets for 2026, single
RateTaxable incomeTax owed
4.7%$0 to $47,5004.7% of taxable income
5.65%YouOver $47,500$2,232.50 + 5.65% over $47,500

Montana at a glance

Income tax
4.7% to 5.65%
Standard deduction
$16,100
State payroll taxes
None
Local income tax
None
Sales tax
None
2026 return due
Apr 15, 2027

How we work it out

  1. 1
    Income
    Your income for the year, less pre-tax retirement savings.
  2. 2
    Deduction
    The larger of the standard deduction and your itemized total.
  3. 3
    Federal brackets
    Each rate from 10% to 37% taxes only the income inside it.
  4. 4
    Montana
    Montana's own deduction and rates on the same income.
  5. 5
    Effective rate
    Your total tax divided by your income.

Montana income tax questions

What are the Montana tax brackets for 2026?
Montana has 2 brackets for single filers, from 4.7% on the first $47,500 of taxable income to 5.65% on income over $47,500.
How much income tax do I pay on $75,000 in Montana?
A single filer earning $75,000 owes about $7,670 in federal income tax and $2,877 in Montana income tax for 2026, $10,547 in all. That is 14.1% of income.
Why is my average rate lower than my tax bracket?
Each rate taxes only the income inside its bracket. A single filer with $58,900 of Montana taxable income is in the 5.65% bracket, but only the $11,400 above $47,500 pays 5.65%. The lower rates tax the rest, so the brackets come to $2,877, 4.9% on average.
What are the 2026 federal tax brackets?
Seven rates: 10%, 12%, 22%, 24%, 32%, 35% and 37%. The 37% rate starts above $640,600 for single filers and above $768,700 for married couples filing jointly.
Will Montana's brackets change?
Set in law by HB 337 (2025): the top rate falls from 5.9% to 5.65% for 2026 with the bracket widened to $47,500 single, then to 5.4% above $65,000 single ($97,500 head of household, $130,000 joint) for 2027.
What is the 2026 standard deduction?
$16,100 for single filers, $32,200 for married couples filing jointly and $24,150 for heads of household. Montana uses the same amounts.
Sources
Checked Oct 29, 2026. Estimates for planning, not tax advice.

Nearby states

All states
IdahoWyomingSouth DakotaNorth Dakota

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