Missouri Rejects Income Tax Elimination by Overwhelming Margin

Missouri voters defeated Amendment 5 on August 4, 2026, with 82.4% voting "no" across 95% of reporting precincts, per Fox 2 St. Louis. At least 1.1 million ballots were cast. The legislatively referred constitutional amendment would have eliminated the state income tax and changed sales tax rules. Missouri's income tax framework stays intact.