Institute on Taxation and Economic Policy (ITEP)

Montana

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State Rundown 10/22: Despite Obstacles, Progressive Taxes Define 2026

• By ITEP Staff

As more states move to raise revenue and tax the rich, anti-tax lobbyists and lawmakers are hard at work to undo that progress. Despite pushback, important conversations around needed revenue continue.

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State Rundown 7/29: The Misguided, Miserly Missouri Amendment to Eliminate the Income Tax

• By ITEP Staff

Missouri voters are facing a major decision at the ballot box next week on Amendment 5, which would amend the state constitution to allow lawmakers to eliminate the individual income tax and expand the state’s sales tax on any good or service to make up for lost revenue.

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State-by-State Tax Expenditure Reports

• By ITEP Staff

Below is a list of tax expenditure reports published in the states.

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2026 Sessions in Review: States Move to Tax the Rich and Corporations

• By Aidan Davis

This year several states raised income tax rates on high-income people to fund crucial services and make progress toward remedying the regressive tilt of their tax codes.

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State Rundown 6/11: Taxing the Rich Heats Up

• By ITEP Staff

As we head into summer, many state legislatures are in the final stretches of their sessions. Rhode Island moved another step closer to joining the ranks of Washington, Maine, and Hawai’i in enacting a new high-income surcharge this year.

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NYC and Montana Lead the Way on Second-Home Taxes

• By Rita Jefferson

Second home taxes make a lot of sense for communities struggling with housing costs for full-time residents. They can raise real revenues too, which can be used to support further affordable housing development.

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As Inequality Grows, More States Look to Tax the Rich

• By Alex Welch

From surcharges on the income of high-earners to higher taxes on second homes, here are recent steps states have taken to tax the rich.

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State Rundown 4/23: While Some States Stop Digging, Others Move Full Steam Ahead with Anti-Affordability Agendas

• By ITEP Staff

Missouri lawmakers passed legislation that will have residents vote on a proposal at the ballot box. The ask: for them to pay more in sales taxes to offset cuts – and the possible elimination – of the state's individual income tax, which makes up nearly two-thirds of Missouri’s general fund.

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State Rundown 3/26: Sobering Revenue Projections Keep States on Their Toes

• By ITEP Staff

This week, troubling revenue projections are making headlines, with many lawmakers scrambling to determine how the tax changes at the federal level, plus price hikes driven by national policy decisions, will impact their states.