Institute on Taxation and Economic Policy (ITEP)

Missouri

St. Louis Post-Dispatch: After Missouri Voters Reject Income Tax Plan, Governor Says He’ll Still Work to Cut Taxes

August 7, 2026

Voters overwhelmingly rejected a proposed constitutional amendment Tuesday that would have triggered the phase-out of the state’s income tax by giving lawmakers the ability to raise sales and services taxes.

Yesterday Missouri voters rejected Amendment 5, declining to give lawmakers a blank check to raise or expand sales taxes, something some lawmakers sought to enable enormous income tax cuts for the state’s wealthiest households.

CBS Missouri: What would eliminating income tax mean for Missourians?

July 30, 2026

"The state isn't going to raise any money, but that doesn't mean it's going to be net neutral for each person," Eli Byerly-Duke, a state policy analyst at the Institute on Taxation and Economic Policy, said.

In early August, Missouri voters will decide one of the most consequential state tax policy questions in recent memory: whether to eliminate their state’s personal income tax.

Missouri’s Amendment 5 Would Cut Taxes for the Rich and Raise Taxes on Seniors and the Middle Class

On August 4, Missouri voters will vote on whether to increase taxes on the middle class and seniors to fund tax cuts for the richest households in the state.

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State-by-State Tax Expenditure Reports

July 1, 2026 • By ITEP Staff

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

State Rundown 6/4: Fiscal Flowers and Weeds Bloom in June

A veritable superbloom of tax and budget policies occurred over these last few weeks, including both flowers worth admiring and weeds worth fighting back.

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

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.

State Rundown 4/8: Budget and Tax Packages Take Shape as Sine Die Approaches in Many States

State legislative sessions are wrapping up, and final tax and budget packages are making their way to governors’ desks.