Self-Employment Tax for Missouri (2026)
Missouri (MO) Key Facts
Federal S E Tax Rate
15.3%
State Income Tax Rate
4.8%
Combined S E + State Rate
20.1%
S E Tax Components
12.4% Social Security + 2.9% Medicare
How This Calculator Works in Missouri
This calculator estimates your total self-employment tax in Missouri, including the federal 15.3% SE tax and Missouri's state income tax. Enter your net SE income to see your liability.
Missouri Overview
Self-employed workers in Missouri pay the federal 15.3% SE tax plus state income tax at up to 4.8%, for a combined burden of approximately 20.1%. Quarterly estimated payments are typically required for both federal and state obligations.
How Missouri Compares
Missouri's combined SE burden of 20.1% compares to Illinois at 20.3% and Kansas at 21.0%. State income tax creates meaningful differences between states.
| State | Top Rate | Notes |
|---|---|---|
| Illinois | 4.95% | Illinois has a state income tax on SE income rate of 4.95%. |
| Kansas | 5.7% | Kansas has a state income tax on SE income rate of 5.7%. |
| Arkansas | 3.9% | Arkansas has a state income tax on SE income rate of 3.9%. |
Missouri's state income tax on SE income rate of 4.8% compares to a national average of approximately 5.04%. This is below the national average.
Tips for Missouri Residents
- 1Federal self-employment tax is 15.3% (12.4% Social Security + 2.9% Medicare) regardless of state.
- 2Missouri adds state income tax at up to 4.8% on self-employment income, for a combined rate of about 20.1%.
- 3Make quarterly estimated payments for both federal and Missouri state taxes to avoid underpayment penalties.
- 4Deduct half of your SE tax on your federal return and track all business expenses to minimize net self-employment income.
- 5Consider whether an S-Corp election could reduce your SE tax burden if your net income exceeds $50,000-$60,000.