1099 Tax Calculator Missouri 2026
Missouri has 8 narrow income tax brackets with a top rate of 4.7% (reduced from 4.8% effective January 1, 2025). The first $1,313 of income is exempt. Kansas City and St. Louis impose 1% local earnings taxes - these are not modeled in this calculator. Use the calculator below to estimate your federal + Missouri state + SE tax for 2026.
Net income after business expenses
Enter your income to see your tax breakdown
How Missouri taxes self-employment income
Missouri has graduated income tax brackets with a top rate of 4.70%.
Missouri has 8 narrow brackets with identical thresholds for single and MFJ filers (marriage-penalty design). Top rate of 4.7% reduced from 4.8% effective January 1, 2025. Some Missouri localities (Kansas City, St. Louis) impose 1% local earnings taxes (not modeled).
Federal tax also applies
Regardless of state, all 1099 contractors and self-employed workers in Missouri owe federal income tax and self-employment tax. SE tax is 15.3% on net earnings (12.4% Social Security up to $184,500 in 2026, plus 2.9% Medicare with no cap). Federal income tax follows the standard bracket structure (10-37%).
The calculator above includes federal, SE, and Missouri state tax in one estimate, and breaks down quarterly estimated payments due April 15, June 15, September 15, 2026, and January 15, 2027.