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Montana Income Tax Calculator

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Overview of Montana Taxes

Montana has a progressive state income tax with a top rate of 6.9%. That rate is higher than the national average, but Montana has only a few other types of taxes. There is no sales tax in the state and property taxes are below the national average. Retired? Use our Retirement Income Tax Calculator.

Enter your financial details to calculate your taxes
Household Income
Filing Status
401(k) Contribution
IRA Contribution
Itemized Deductions
Number of Personal Exemptions

Your Income Taxes Breakdown

Tax Type Marginal 
Tax Rate
Tax Rate
Total Income Taxes
Income After Taxes
Retirement Contributions
Take-Home Pay

* These are the taxes owed for the 2018 - 2019 filing season.

Changes to Your Federal Income
Taxes Under the 2018 Tax Reform

  • Your marginal federal income tax rate
  • Your effective federal income tax rate
  • Your federal income taxes

Total Estimated 2018 Tax Burden

Income Tax $
Sales Tax $
Fuel Tax $
Property Tax$
Total Estimated Tax Burden $
Percent of income to taxes = %
  • Our Tax Expert

    Jennifer Mansfield, CPA Tax

    Jennifer Mansfield, CPA, JD/LLM-Tax, is a Certified Public Accountant with more than 30 years of experience providing tax advice. SmartAsset’s tax expert has a degree in Accounting and Business/Management from the University of Wyoming, as well as both a Masters in Tax Laws and a Juris Doctorate from Georgetown University Law Center. Jennifer has mostly worked in public accounting firms, including Ernst & Young and Deloitte. She is passionate about helping provide people and businesses with valuable accounting and tax advice to allow them to prosper financially. Jennifer lives in Arizona and was recently named to the Greater Tucson Leadership Program.

    ...read more
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Montana state tax quick facts
  • Income tax: 1% - 6.9%
  • Sales tax: None
  • Property tax: 0.84% average effective rate
  • Gas tax: 32.25 cents per gallon of regular gasoline, 30 cents per gallon of diesel

Montana is a relatively taxpayer-friendly state. There are no sales taxes in Big Sky Country and property taxes are below the national average, with an average effective rate of just 0.84%. The state does have a personal income tax, with rates ranging from 1% to 6.9%; those represent the 18th-lowest bottom rate among U.S states and the 15th-highest top rate. To offset income taxes, however, Montana offers a number of tax credits, including a credit for capital gains. Read on to learn more about that and other credits, as well as additional Montana tax rules and exemptions that might affect you.

Montana Income Tax

The Montana state income tax is progressively structured, with higher rates for higher income earners. As shown in the table below, rates range from 1% to 6.9%.

Income Tax Brackets

All Filers
Montana Taxable IncomeRate
$0 - $3,0001.00%
$3,000 - $5,2002.00%
$5,200 - $8,0003.00%
$8,000 - $10,8004.00%
$10,800 - $13,9005.00%
$13,900 - $17,9006.00%

To calculate income taxes, Montana taxpayers should begin with their federal adjusted gross income (AGI). That number may include some types of income that are not taxable in Montana and need to be subtracted.

Social Security income, unemployment compensation, state income tax refunds, interest from federal bonds or notes, some pension income and active duty military income are among the types of income that can be subtracted from federal AGI when calculating taxable income in Montana.

Itemized deductions are allowed in Montana and there are a number of deductions in Montana that are not available federally. The deduction for federal income tax payments allows taxpayers to deduct all of the income tax payments they made over the past year (including withholding taxes); this deduction can be as much as $5,000 for single filers or married people filing separately, or $10,000 for joint filers. Political contributions can also be deducted, up to $100 for you and another $100 for your spouse.

For filers who do not claim itemized deductions, the standard deduction in Montana is equal to 20% of adjusted gross income, within a minimum and maximum boundary. The minimum standard deduction is $4,060 for joint filers and heads of household and $2,030 for all other filers. The maximum standard deduction is $9,160 for joint filers and heads of household, and $4,580 for all other filers.

The personal exemption amount in Montana is $2,440. Exemptions can be claimed for you, your spouse and any dependents. Each exemption reduces your taxable income by the personal exemption amount.

In addition to deductions and exemptions, Montana offers credits to reduce the total tax burden of taxpayers in certain circumstances. Those credits include the credit for income taxes paid to another state, the college contribution credit, the qualified endowment credit, the energy conservation installment credit, the alternative fuel credit, the elderly care credit, the recycle credit and the capital gains credit (described in the next section).

Montana Capital Gains Tax

While Montana does tax capital gains, the state offers the capital gain tax credit to offset the cost. The credit is equal to 2% of all net capital gains listed on your Montana income tax return. In effect, that lowers the top capital gains tax rate in Montana to 4.9%.

Montana Sales Tax

There is no state sales tax in Montana. Goods and services can be purchased sales-tax-free (although “sin” taxes on alcohol and cigarettes do apply—see below).

Montana Alcohol Tax

While there is no sales tax in Montana, the state does collect excise taxes on alcoholic beverage. These are typically collected from the wholesaler and not at the point of sale, so they may not appear on your receipt. Instead, they will be directly included in the price. The tax varies depending on the beverage type and alcohol content. Beer is taxed at a rate of 14 cents per gallon (1.3 cents per 12-ounce beer), liquor is taxed at a rate of $9.78 per gallon and wine is taxed at a rate of $1.06 per gallon.

Montana Cigarette Tax

As with alcohol, Montana levies an excise tax on cigarettes. The tax is $1.70 per pack of 20, which equals 8.5 cents per cigarette. This is just slightly below the national average of $1.78 per pack. The state collects the tax from wholesalers, who must then attach decals to each pack of cigarettes sold as proof of payment. Because wholesalers pay the tax, it is already included in the price that consumers pay.

Montana Property Tax

Although property taxes primarily support local governments and services in Montana, the state Department of Revenue oversees the appraisal and assessment of property throughout the state to ensure that properties are evaluated in a uniform manner. The state’s average property tax collections are relatively low, with an average effective rate (property taxes as a percentage of home value) of 0.84%. This is the 19th lowest rate in the U.S. If you’re considering purchasing a house in the Big Sky State, or if you’re already a Montana resident and want to refinance your mortgage, check out our Montana mortgage guide. It breaks down the rates and other information you’ll need to know before getting a mortgage.

Montana Gas Tax

Big Sky Country is a great place for a road trip, but keep in mind the state’s gas taxes when planning your route. The tax on regular gasoline is 32.25 cents per gallon. This is the 20th-highest in the U.S. When combined with the federal gas tax, the total tax on fuel in Montana is 50.65 cents per gallon. The tax on diesel is slightly lower: It‘s 30 cents per gallon at the state level, for a total of 54.4 cents per gallon when including federal taxes.

Montana Estate Tax

As of January 1, 2005, there is no estate tax in Montana. Prior to that date, the estate tax was equal to the maximum credit allowed against the federal estate tax.

Photo credit: flickr
  • More than 3 million people visit Yellowstone National Park every year. Approximately 80% of these visitors come in the months of June, July, August and September.
  • Montana’s state motto is “Oro y Plata” which means “silver and gold” in Spanish.
  • The largest cities in Montana are Billings, Missoula, Great Falls, Bozeman and Butte.

Places with the Lowest Tax Burden

Are you curious how your tax burden stacks up against others in your state? SmartAsset’s interactive map highlights the counties with the lowest tax burden. Scroll over any county in the state to learn about taxes in that specific area.

Rank County Income Tax Sales Tax Property Tax Fuel Tax


Where you live can have a big impact on both which types of taxes you have to pay each year and how much money you spend on them. SmartAsset calculated the amount of money a specific person would pay in income, sales, property and fuel taxes in each county in the country and ranked the lowest to highest tax burden.

To better compare income tax burdens across counties, we used the national median household income. We then applied relevant deductions and exemptions before calculating federal, state and local income taxes.

In order to determine sales tax burden we estimated that 35% of take-home (after-tax) pay is spent on taxable goods. We multiplied the average sales tax rate for a county by the household income less income tax. This product is then multiplied by 35% to estimate the sales tax paid.

For property taxes, we compared the median property taxes paid in each county.

For fuel taxes, we first distributed statewide vehicle miles traveled down to the county level using the number of vehicles in each county. We then calculated the total number of licensed drivers within each county. The countywide miles were then distributed amongst the licensed drivers in the county, which gave us the miles driven per licensed driver. Using the nationwide average fuel economy, we calculated the average gallons of gas used per driver in each county and multiplied that by the fuel tax.

We then added the dollar amount for income, sales, property and fuel taxes to calculate a total tax burden. Finally, we created the Tax Burden Index in order to show how each county in the country compares to the county with the lowest tax burden (that is the county with a Tax Burden Index of 100).

Sources: US Census Bureau 2017 American Community Survey, Government Sources, Avalara, American Petroleum Institute, GasBuddy, UMTRI, Federal Highway Administration, SmartAsset