Wisconsin Bonus Tax Calculator (2026)
Wisconsin has no flat bonus rate: the bonus is withheld with your regular pay. Here's an estimate of what you'll take home.
Wisconsin rules for bonuses
Optional flat supplemental rate. Published rates: 3.54% for estimated annual gross salary under $12,760; 4.65% for $12,760 to under $25,520; 5.3% for $25,520 to under $280,950; 7.65% for $280,950 and over.
- Alternative to aggregating (same period, or current/last preceding period if paid between periods)
- Flat percentages only for supplemental payments
As an alternative to the above methods, the withholding on supplemental wage payments may be determined by estimating the employee's annual gross salary and applying flat percentages to the supplemental payments. (W-166 (1/26))
Local taxes: None
Take-home bonus by amount
| Bonus | Federal (22%) | FICA | State | Take-home |
|---|---|---|---|---|
| $1,000 | $220 | $77 | $53 | $651 |
| $2,500 | $550 | $191 | $133 | $1,626 |
| $5,000 | $1,100 | $383 | $265 | $3,253 |
| $10,000 | $2,200 | $765 | $530 | $6,505 |
| $20,000 | $4,400 | $1,530 | $1,060 | $13,010 |
| $50,000 | $11,000 | $3,825 | $2,650 | $32,525 |
Sources
Frequently asked questions
What is the bonus tax rate in Wisconsin?
Wisconsin has no separate flat rate for bonuses: employers add the bonus to regular wages and use the normal withholding formula. For a $85,000 salary that works out to roughly 5.3% on the bonus.
How much of a $10,000 bonus do I keep in Wisconsin?
About $6,505 for a single filer earning $85,000: $2,200 federal, $765 Social Security and Medicare and $530 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).