Missouri Amendment 5 (Income Tax Elimination and Sales Tax Changes Amendment) was on the August 4, 2026 ballot. Rejected by roughly 83 percent of voters on August 4, 2026; results were certified by the Board of State Canvassers on August 25.
What a yes or no vote means
Verify with the state: official full text and details →.
See everything else on your Missouri ballot
About this measure
Missouri initiative petitions must hit district thresholds in six of the state's eight congressional districts: 8 percent of the last gubernatorial vote per district for constitutional amendments (about 170,215 signatures using the six lowest districts for 2026) and 5 percent for statutes (about 106,384), with veto referendums needing 5 percent in two-thirds of districts. The General Assembly refers constitutional amendments by majority vote of both chambers on a joint resolution. All measures pass by simple majority.
Wording above follows the certified ballot language; The Ballot Brief does not take positions on measures.