Business & Income Tax

2026 Withholding Lookback Letters

Tax Year 2026 lookback letters for withholding account owners will be sent out by October 21st. You will only receive a lookback letter if your remittance schedule has changed.

If you receive this letter, be sure to notify your payroll providers that your remittance schedule will change as of January 1st, 2026.

Reach out to the Withholding Unit at 406-444-6937 or MTDORWithholding@mt.gov with any questions.

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2024

Tax Simplification Resource Hub
Tax Year 2024 Resources for Individuals, Estates and Trusts
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Resources

Business & Income Tax Webinars
Records and Materials from Webinars Hosted by BIT

Categories & Resources

If you live or work in Montana, you may need to file and pay individual income tax.

Businesses in Montana pay income taxes based on how they are registered with the IRS. In addition to income tax, businesses may also owe withholding taxes, natural resource taxes, or other, miscellaneous taxes.

The Montana Department of Revenue administers the state’s licensing, distribution, and taxation on Alcoholic Beverages. Learn more about alcohol licensing and distribution.

Montana collects taxes on natural resources harvested in the state including coal, metal, oil, and natural gas.

Montana has several taxes covering specific businesses, services, or locations.

These taxes include telecommunications, tobacco, tourism, cannabis, and health care facilities among others.

An estate or trust is managed by a fiduciary, also known as a guardian, trustee, executor, administrator, receiver, or conservator. The fiduciary is responsible for filing and paying taxes on an estate or trust's behalf.

Montana requires all wholesalers and retailers selling tobacco products to be licensed by the Department of Revenue.

To see if a business is licensed in Montana, consult our Active Tobacco License List.

View the Cigarette Minimum Price List.

For information on approved tobacco products, see the Department of Justice Tobacco Sales and Directory.

The Department of Justice provides several resources about Tobacco product sales in Montana, including lists of all tobacco products approved for sale. They also provide a guide on the fire safety standards the State Fire Marshall uses to approve cigarettes for sale in Montana.

Montana has several programs which assist taxpayers with both income and property tax.

Montana Economic Development Industry Advancement (MEDIA) Tax Credit
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It is the mission of the Business and Income Tax Division to contribute to the effective administration of taxes, fees and other revenue sources administered by the Department of Revenue.