Missouri Bonus Tax Calculator (2026)
Missouri withholds 4.7% state income tax on bonuses, on top of the federal 22% and 7.65% FICA.
Missouri rules for bonuses
Optional flat supplemental rate. Published rates: 4.7% for supplemental wages paid separately (bonuses, commissions, severance, overtime, back pay; tips same options).
- Only if MO tax was withheld from regular wages; otherwise aggregate
- Paid with regular wages: aggregate
Withhold a flat percentage rate of 4.7 percent of the supplemental wages... If you have not withheld income tax from the regular wages, you must use [the aggregate method].
Local taxes: Kansas City and St. Louis city 1% earnings tax (residents and nonresidents working there; unconfirmed)
Take-home bonus by amount
| Bonus | Federal (22%) | FICA | State | Take-home |
|---|---|---|---|---|
| $1,000 | $220 | $77 | $47 | $657 |
| $2,500 | $550 | $191 | $118 | $1,641 |
| $5,000 | $1,100 | $383 | $235 | $3,283 |
| $10,000 | $2,200 | $765 | $470 | $6,565 |
| $20,000 | $4,400 | $1,530 | $940 | $13,130 |
| $50,000 | $11,000 | $3,825 | $2,350 | $32,825 |
Sources
Frequently asked questions
What is the bonus tax rate in Missouri?
Missouri withholds 4.7% on bonuses when the employer chooses the flat supplemental rate, on top of the federal 22% and 7.65% FICA.
How much of a $10,000 bonus do I keep in Missouri?
About $6,565 for a single filer earning $85,000: $2,200 federal, $765 Social Security and Medicare and $470 state.
Will I get some of the bonus tax back?
Possibly. The 22% federal rate is only withholding. At tax time your bonus is taxed at your bracket (22% at this salary), and Missouri's flat supplemental rate can also differ from your actual state rate.