Montana Income Tax Rate 2018 - 2019

Montana state income tax rate table for the 2018 - 2019 filing season has seven income tax brackets with MT tax rates of 1%, 2%, 3%, 4%, 5%, 6% and 6.9% for Single, Married Filing Jointly, Married Filing Separately, and Head of Household statuses. Montana tax rate is unchanged from last year, however, the income tax brackets increased due to the annual inflation adjustment.

Montana income tax rate and tax brackets shown in the table below are based on income earned between January 1, 2018 through December 31, 2018. Outlook for the 2019 Montana income tax rate is to remain unchanged with income tax brackets increasing due to the annual inflation adjustment.

Montana Single Income Tax Brackets
Income Tax BracketTax Rate 2018
$0to$3,0001%
$3,001to$5,2002%
$5,201to$8,0003%
$8,001to$10,8004%
$10,801to$13,9005%
$13,901to$17,9006%
$17,901to6.9%
Montana Married Filing Jointly Tax Brackets
Income Tax BracketTax Rate 2018
$0to$3,0001%
$3,001to$5,2002%
$5,201to$8,0003%
$8,001to$10,8004%
$10,801to$13,9005%
$13,901to$17,9006%
$17,901to6.9%
Montana Married Filing Separately Tax Brackets
Income Tax BracketTax Rate 2018
$0to$3,0001%
$3,001to$5,2002%
$5,201to$8,0003%
$8,001to$10,8004%
$10,801to$13,9005%
$13,901to$17,9006%
$17,901to6.9%
Montana Head of Household Tax Brackets
Income Tax BracketTax Rate 2018
$0to$3,0001%
$3,001to$5,2002%
$5,201to$8,0003%
$8,001to$10,8004%
$10,801to$13,9005%
$13,901to$17,9006%
$17,901to6.9%

Source: Montana Individual Income Tax, 2018 Rate Table, published by the Montana Department of Revenue.

Please reference the Montana tax forms and instructions booklet published by the Montana Department of Revenue to determine if you owe state income tax or are due a state income tax refund. Montana income tax forms are generally published at the end of each calendar year, which will include any last minute 2018 - 2019 legislative changes to the MT tax rate or tax brackets. The Montana income tax rate tables and tax brackets shown on this web page are for illustration purposes only.

Montana Tax Brackets 2018 - 2019

Looking at the tax rate and tax brackets shown in the tables above for Montana, we can see that Montana collects individual income taxes similarly for Single versus Married filing statuses, for example. We can also see the progressive nature of Montana state income tax rates from the lowest MT tax rate bracket of 1% to the highest MT tax rate bracket of 6.9%.

For single taxpayers living and working in the state of Montana:

  • Tax rate of 1% on the first $3,000 of taxable income.
  • Tax rate of 2% on taxable income between $3,001 and $5,200.
  • Tax rate of 3% on taxable income between $5,201 and $8,000.
  • Tax rate of 4% on taxable income between $8,001 and $10,800.
  • Tax rate of 5% on taxable income between $10,801 and $13,900.
  • Tax rate of 6% on taxable income between $13,901 and $17,900.
  • Tax rate of 6.9% on taxable income over $17,900.

For married taxpayers living and working in the state of Montana:

  • Tax rate of 1% on the first $3,000 of taxable income.
  • Tax rate of 2% on taxable income between $3,001 and $5,200.
  • Tax rate of 3% on taxable income between $5,201 and $8,000.
  • Tax rate of 4% on taxable income between $8,001 and $10,800.
  • Tax rate of 5% on taxable income between $10,801 and $13,900.
  • Tax rate of 6% on taxable income between $13,901 and $17,900.
  • Tax rate of 6.9% on taxable income over $17,900.

For the Single, Married Filing Jointly, Married Filing Separately, and Head of Household filing statuses, the MT tax rates and the number of tax brackets remain the same. Notice also that the Single, Married Filing Jointly, Married Filing Separately, and Head of Household income tax bracket amounts are all the same for the state of Montana.

Last updated: January 17, 2019