Kansas Bonus Tax Calculator (2026)
Kansas withholds 5% state income tax on bonuses, on top of the federal 22% and 7.65% FICA.
Kansas rules for bonuses
Flat rate when federal uses 22%. Published rates: 5% for supplemental wages stated separately when federal is withheld as a percentage.
- Kansas follows the federal method: aggregated federally -> aggregate for Kansas
- KW-100 Rev. 10-24 is still the current edition (archived 2026-10-09). Its '(usually 25%)' federal reference is outdated
If you state the supplemental wage separately and compute federal withholding as a percentage of the payment (usually 25%), then compute Kansas withholding at 5% of the gross payment. For example, Kansas withholding on a $1,000 bonus paid would be $50 ($1,000 X 5%).
Local taxes: None on wages
Take-home bonus by amount
| Bonus | Federal (22%) | FICA | State | Take-home |
|---|---|---|---|---|
| $1,000 | $220 | $77 | $50 | $654 |
| $2,500 | $550 | $191 | $125 | $1,634 |
| $5,000 | $1,100 | $383 | $250 | $3,268 |
| $10,000 | $2,200 | $765 | $500 | $6,535 |
| $20,000 | $4,400 | $1,530 | $1,000 | $13,070 |
| $50,000 | $11,000 | $3,825 | $2,500 | $32,675 |
Sources
Frequently asked questions
What is the bonus tax rate in Kansas?
Kansas withholds 5% on bonuses, on top of the federal 22% and 7.65% FICA.
How much of a $10,000 bonus do I keep in Kansas?
About $6,535 for a single filer earning $85,000: $2,200 federal, $765 Social Security and Medicare and $500 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 Kansas's flat supplemental rate can also differ from your actual state rate.