Montana State Income Tax: Rates and Who Pays in 2026

If you live, work, or plan to move to Montana, understanding the state’s income tax can help you estimate how much of your paycheck you actually get to keep. Unlike states with no individual income tax, Montana taxes individual income, but its current system is considerably simpler than it was in the past.

For 2026, Montana has two individual income tax rates: 4.7% and 5.9%. The rate that applies to you depends on your taxable income and filing status. Montana’s current system uses federal taxable income as its starting point and has separate tax brackets based on filing status.

Montana also has specific rules for capital gains, seniors, deductions, credits, and different types of income. Simply multiplying your salary by 5.9% won’t necessarily tell you how much Montana income tax you’ll owe.

This guide explains Montana’s 2026 income tax rates, who has to pay, how the brackets work, how capital gains are taxed, what deductions and credits can reduce your bill, and how Montana income tax affects your paycheck.

Does Montana Have a State Income Tax?

Yes. Montana imposes an individual state income tax on taxable income.

Starting in tax year 2024, Montana significantly changed how it calculates individual income tax. The state moved from using federal adjusted gross income as its starting point to using federal taxable income, eliminated its previous standard and itemized deductions and personal exemption, and reduced the number of individual income tax brackets to two.

For 2026, the two ordinary income tax rates are:

• 4.7%
• 5.9%

Your filing status determines where the lower-rate bracket ends.

What Are Montana’s Income Tax Rates in 2026?

Montana’s individual income tax system has two rates for ordinary taxable income in 2026. The lower rate is 4.7%, while income above the applicable threshold is generally taxed at 5.9%.

The thresholds vary according to filing status.

Filing Status	4.7% Rate Applies Up To	Rate Above Threshold
Single / Married Filing Separately	$21,100	5.9%
Head of Household	$31,700	5.9%
Married Filing Jointly	$42,200	5.9%

These thresholds are based on Montana’s tax tables and apply to taxable income after excluding net long-term capital gains for purposes of the ordinary income calculation.

The important point is that not all of your income is automatically taxed at 5.9% once you cross the threshold. Montana uses a graduated structure, so the first portion is taxed at 4.7%, and the portion above the threshold is taxed at 5.9%.

Read: New Hampshire State Income Tax: Rates and Who Pays in 2026

How Do Montana Tax Brackets Work?

Montana’s two-rate structure is relatively straightforward. Suppose you’re a single filer with $30,000 of Montana taxable ordinary income. The first $21,100 falls within the 4.7% bracket. The portion above $21,100 falls into the 5.9% bracket.

You therefore wouldn’t simply calculate 30,000 × 5.9%. This distinction matters when estimating your actual state income tax liability. Your final tax bill can also be affected by deductions, credits, capital gains treatment, and other adjustments.

Who Has to Pay Montana Income Tax?

Generally, Montana residents with taxable income are subject to the Montana individual income tax. This can include people who earn money through:

• Salaried employment.
• Hourly employment.
• Self-employment.
• Freelancing.
• Business activities.
• Investments.
• Retirement accounts.
• Other taxable sources.

Montana residents generally report their income on a Montana individual income tax return. Nonresidents can also have Montana tax obligations when they earn income sourced to Montana.

Do Montana Residents Pay Tax on Their Wages?

Yes. If you’re a Montana resident earning wages from a job, your income can be subject to Montana individual income tax.

Your employer generally withholds Montana income tax from your paycheck when required.

For example, if you earn $60,000 in salary, your Montana taxable income won’t necessarily be exactly $60,000 because Montana’s tax calculation starts with federal taxable income and applies Montana-specific rules.

Your actual Montana tax liability will therefore depend on your overall tax situation.

Does Montana Tax Federal Income?

Montana has its own state income tax system, separate from the federal income tax system. The state uses federal taxable income as the starting point under its current system, but that doesn’t mean your federal and Montana tax bills are the same.

You can have:

• Federal income tax liability.
• Montana income tax liability.
• Social Security taxes.
• Medicare taxes.

Each is calculated under different rules. This is why looking only at your federal tax bracket isn’t enough to estimate your Montana paycheck.

Read: New Hampshire State Income Tax: Rates and Who Pays in 2026

How Does Montana Calculate Taxable Income?

Since tax year 2024, Montana generally starts its individual income tax calculation with federal taxable income rather than federal adjusted gross income. The state then applies Montana-specific rules where necessary.

Montana’s tax system also eliminated several state-specific deductions and adjustments that existed under its previous system. This change was intended to simplify the state’s income tax calculation and bring Montana’s starting point more closely in line with the federal tax system.

Does Montana Have a Standard Deduction?

Montana’s current individual income tax system does not use the traditional Montana-specific standard deduction that existed under the previous system.

Beginning in 2024, Montana moved to a system based on federal taxable income and eliminated its state standard and itemized deductions.

This means federal deductions can significantly affect the starting point of your Montana tax calculation. However, Montana has its own rules and adjustments, so taxpayers shouldn’t assume that every federal tax treatment automatically carries over to the state return.

Can You Itemize Deductions on Your Montana Return?

Montana eliminated its separate state standard and itemized deduction system beginning in tax year 2024. Instead, the state’s individual income tax calculation generally begins with federal taxable income.

This represents a major change from Montana’s previous tax structure, in which taxpayers had to navigate a more complicated system of Montana-specific additions, subtractions, deductions, and exemptions.

Does Montana Tax Social Security?

Montana can tax Social Security benefits included in Montana’s taxable income. However, the exact amount subject to Montana tax depends on your overall income and the applicable federal and Montana rules.

This is particularly important for retirees because Social Security taxation can vary considerably from state to state.

If you’re planning to retire in Montana, consider both federal and state Social Security treatment when estimating your after-tax retirement income.

Does Montana Tax Retirement Income?

Montana generally taxes taxable retirement income as part of its individual income tax system. Depending on your circumstances, this can include income from:

• Traditional IRA distributions.
• 401(k) withdrawals.
• Pension payments.
• Taxable annuity income.
• Taxable Social Security benefits.

The tax treatment can differ depending on the type of retirement income and whether any specific exclusion or deduction applies.

Montana also provides a specific subtraction for certain taxpayers age 65 and older under its current tax system. The state’s tax structure created a $5,500 income exemption for taxpayers aged 65 or older, beginning in 2024.

Read: Nevada State Income Tax in 2026: What Every Resident and Newcomer Needs to Know

Does Montana Tax Capital Gains?

Yes, but Montana provides preferential treatment for certain net long-term capital gains. Montana’s current tax tables apply a separate rate to qualifying net long-term capital gains.

For 2025, the state tax table showed a 3.0% rate on the applicable first portion of qualifying net long-term capital gains and 4.1% on the amount above the applicable threshold.

The exact calculation depends on your filing status, ordinary taxable income, and the amount of qualifying long-term capital gains.

Because capital gains rules can be more complicated than ordinary income taxation, investors should calculate them separately rather than simply applying the ordinary 5.9% rate.

How Are Short-Term and Long-Term Capital Gains Different?

The length of time you hold an investment can affect its tax treatment. Generally:

• Short-term gains come from assets held for a shorter period.
• Long-term gains come from qualifying assets held for more than one year.

Federal tax rules distinguish between these categories, and Montana also provides special treatment for certain net long-term capital gains.

If you sell stocks, mutual funds, real estate, or another investment for a profit, keep accurate records of your purchase price, sale price, and holding period.

Does Montana Tax Investment Income?

Montana can tax taxable investment income as part of its individual income tax system. This can include:

• Interest.
• Dividends.
• Capital gains.
• Other taxable investment income.

The treatment depends on the type of income. For example, qualifying long-term capital gains can receive different treatment from ordinary interest income.

Does Montana Tax Business Income?

Yes, business income earned by individuals can be subject to Montana income tax.

If you’re a sole proprietor, freelancer, independent contractor, or other self-employed worker, your business income can flow through to your individual tax return.

Your federal and Montana tax obligations can include both income tax and, depending on your circumstances, self-employment-related taxes.

Business owners should also determine whether their business structure creates separate Montana tax filing obligations.

Read: South Carolina State Income Tax: Rates, Brackets, Filing Rules, and Tax Saving Tips

Do Freelancers Pay Montana Income Tax?

Generally, yes, if they are Montana residents or have Montana-source income and meet the state’s filing requirements.

Freelancers typically don’t have an employer withholding Montana income tax from every payment. This means they need to plan for their tax liability themselves.

Depending on their income, freelancers may need to:

• Track business income.
• Track eligible business expenses.
• Make estimated tax payments.
• File a federal return.
• File a Montana return.
• Pay applicable self-employment taxes.

Setting aside money from every client payment can help prevent a large tax bill later.

What About Gig Workers in Montana?

Gig workers such as rideshare drivers, delivery workers, pet sitters, freelancers, and independent contractors may have Montana tax obligations on their earnings.

The fact that income comes through an app or online platform doesn’t make it tax-free. If you’re earning money through gig work, keep records of:

• Gross income.
• Platform fees.
• Business mileage.
• Supplies.
• Equipment.
• Other qualifying business expenses.

Your federal and Montana tax returns may treat different portions of your income differently, so accurate records are essential.

Does Montana Have a Local Income Tax?

Montana’s individual income tax is imposed at the state level.

Unlike some states that allow cities or counties to impose their own income taxes, Montana generally does not operate a broad local wage income tax system.

This means most Montana residents don’t have to calculate a separate city income tax on top of their state income tax. However, local governments can impose other taxes and fees, particularly property-related taxes.

How Does Montana Income Tax Affect Your Paycheck?

If you’re employed in Montana, your paycheck can include several different tax deductions. These can include:

• Federal income tax withholding.
• Montana income tax withholding.
• Social Security tax.
• Medicare tax.
• Retirement contributions.
• Health insurance premiums.
• Other employee benefits.

Your Montana income tax withholding is an estimate toward your eventual state tax liability. When you file your return, the state compares what you actually owe with what has already been withheld.

Read: California State Income Tax: Rates, Brackets, and What Residents Need to Know

What Happens If You Withhold Too Much Montana Tax?

If your Montana income tax withholding exceeds your final state tax liability, you may be entitled to a refund.

For example, if your final Montana tax liability is $3,000 but $3,500 was withheld from your paychecks, you could receive a $500 refund, assuming there are no other adjustments.

A refund isn’t free money. It generally represents money you already paid during the year that exceeded your final tax liability.

What Happens If You Don’t Withhold Enough?

If your Montana withholding is lower than your final tax liability, you may have a balance due when you file. This can happen if:

• You start a second job.
• You earn significant freelance income.
• Your investment income increases.
• Your withholding information is inaccurate.
• Your income changes substantially.

Reviewing your withholding periodically can help reduce the likelihood of a surprise tax bill.

Does Montana Require Estimated Tax Payments?

Some taxpayers who receive income without sufficient withholding may need to make estimated tax payments. This is particularly relevant to:

• Freelancers.
• Independent contractors.
• Business owners.
• Investors.
• Landlords.
• People with substantial income outside traditional employment.

Estimated payments allow you to pay your tax liability throughout the year instead of waiting until you file your annual return.

What Tax Credits Can Reduce Montana Income Tax?

Tax credits can reduce your tax liability after it has been calculated. Montana offers various credits depending on the taxpayer’s circumstances and the tax year.

Potential credits can relate to areas such as:

• Family-related expenses.
• Contributions.
• Business activities.
• Economic development.
• Certain investments or projects.

Tax credits can change as Montana legislation changes, so taxpayers should review the credits available for the specific year they’re filing.

Does Montana Have a Senior Tax Break?

Yes. Montana’s current tax structure provides a specific income exemption for taxpayers who are at least 65 years old. Beginning in tax year 2024, taxpayers aged 65 and older became eligible for a $5,500 subtraction from federal taxable income under Montana’s new system.

This can reduce taxable income for qualifying older taxpayers. The exact benefit depends on your income and circumstances.

Does Montana Tax Military Income?

Military taxation can involve special federal and state rules. Montana’s treatment of military income can depend on residency, the type of income, and applicable federal and state provisions.

If you’re an active-duty service member, military spouse, or veteran with income from multiple states, review the current Montana rules carefully rather than assuming your military income is treated exactly like ordinary wages.

What If You Live in Montana but Work in Another State?

Your tax situation can become more complicated when you live in Montana and earn income from another state. You may need to consider:

• Montana residency.
• The other state’s sourcing rules.
• Where the work was physically performed.
• State withholding.
• Possible credits for taxes paid to another state.

Don’t assume that working remotely for an out-of-state company automatically means you owe income tax to that company’s state. State taxation generally depends on residency, sourcing, and the specific rules of the states involved.

Read: Oregon State Income Tax: Rates, Brackets, and What Residents Need to Know

What If You Move to Montana During the Year?

If you move into or out of Montana during the year, you may be considered a part-year resident.

Part-year residents generally need to determine which income belongs to the period when they were Montana residents and which income is attributable to sources in Montana.

Moving states during the year can make your return more complicated, especially if you earned income in multiple states. Keep records of:

• Your move date.
• Employment dates.
• State withholding.
• Addresses.
• Investment transactions.
• Other state-specific income.

Montana Income Tax for Nonresidents

You don’t necessarily have to live in Montana to have a Montana tax obligation. Nonresidents can owe Montana income tax on Montana-source income.

For example, income connected to work physically performed in Montana or to certain Montana business activities may create a state filing requirement.

If you live elsewhere but earn income from Montana sources, review the state’s nonresident rules carefully.

Is Montana a Tax-Friendly State?

Montana can be moderately tax-friendly depending on your financial circumstances. The state’s advantages include:

• A relatively simple two-rate individual income tax structure.
• A lower 4.7% starting rate.
• Preferential treatment for certain long-term capital gains.
• A specific exemption for taxpayers age 65 and older.

However, Montana does impose an individual income tax, so it isn’t in the same category as states without one.

Your overall tax burden also depends on property taxes, federal taxes, housing costs, and other expenses.

Montana vs. States With No Income Tax

If you’re comparing Montana with states such as New Hampshire or other states that don’t impose a broad individual income tax, the difference can be significant.

A Montana resident earning taxable income generally has a state income tax liability. A resident of a state with no individual income tax may not.

However, state income tax is only one part of the financial picture. A state with no income tax can have higher property taxes, housing costs, insurance costs, or other taxes.

When comparing states, look at total after-tax living costs, not just the headline income tax rate.

Read: Minnesota State Income Tax: Complete Guide for 2026

How to Lower Your Montana Tax Liability

You can’t eliminate your tax bill simply by moving income around, but legitimate tax planning can reduce your taxable income or tax liability when you’re eligible.

Potential strategies include:

• Claiming qualifying tax credits.
• Taking advantage of applicable senior exemptions.
• Understanding Montana’s capital gains treatment.
• Making eligible retirement contributions.
• Tracking qualifying business expenses.
• Reviewing your withholding.
• Making estimated payments when necessary.

The key is to claim only deductions and credits you’re actually eligible for.

Common Montana Income Tax Mistakes

Taxpayers can make several mistakes when preparing their Montana returns.

Assuming the 5.9% Rate Applies to Everything

Montana has a graduated structure. The lower portion of taxable income can be taxed at 4.7%, while income above the applicable threshold is generally taxed at 5.9%.

Confusing Federal Taxable Income With Montana Tax Liability

Montana uses federal taxable income as a starting point, but that doesn’t mean your federal tax bill is your Montana tax bill.

Ignoring Capital Gains Rules

Long-term capital gains are treated differently from ordinary income, so investors should calculate them carefully.

Forgetting About Self-Employment Taxes

Freelancers and independent contractors can have both income tax and self-employment tax obligations.

Not Updating Withholding

A new job, a raise, a second income stream, or a major investment gain can change your tax situation.

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Conclusion

Montana does have a state individual income tax, and in 2026, the system uses two ordinary income tax rates: 4.7% and 5.9%. The applicable threshold depends on your filing status and taxable income.

Montana’s tax system changed significantly beginning in 2024, moving to federal taxable income as its starting point and simplifying the previous multi-bracket structure.

The state’s tax picture becomes more nuanced when you consider long-term capital gains, retirement income, senior exemptions, business income, and income earned by nonresidents.

If you’re a Montana resident, the most useful approach is to look beyond the headline 5.9% rate. Your actual tax liability depends on your taxable income, filing status, deductions, credits, and the type of income you receive.

FAQs: Montana State Income Tax