Washington Bonus Paycheck Calculator
A bonus paid in Washington is withheld at the flat 22% federal supplemental rate in 2026 (37% on amounts above $1 million), plus FICA of 7.65% and no state income tax. That is roughly 29.65% withheld up front — withholding, not your final tax bill.
How are bonuses taxed in Washington?
Washington has no tax on wages (its capital-gains tax does not apply to paychecks), so your bonus only faces federal taxes: a flat 22% federal supplemental withholding (37% above $1 million) plus 7.65% for Social Security and Medicare — about 29.65% withheld up front. Withholding isn't your final tax — at filing time a bonus is ordinary income, so any over-withholding comes back as a refund.
Calculate your exact bonus take-home pay
Your bonus take-home
Enter your bonus amount below to see your take-home.
Your details
Most common — a flat 22% federal rate is withheld on the bonus.
Bonus Amount
Enter your one-time bonus payment
Taxation Method
Choose how your bonus is taxed
Most employers use the flat supplemental rate method (22% federal withholding).
Location
Where you work
Filing Status
Your tax filing status
Enter your bonus amount to see your take-home pay estimate.
How Washington bonus withholding works
Short answer: your employer withholds a flat 22% for federal income tax (the supplemental rate) plus 7.65% for Social Security and Medicare — and because Washington has no state income tax, that's the whole story: about 29.65% withheld up front. Bonuses aren't actually taxed at a higher rate, though: at tax time they're ordinary income, and any over-withholding comes back in your refund. Here's how each piece works.
- Federal supplemental rate: Most employers withhold federal income tax from bonuses at a flat 22% (or 37% for amounts over $1 million per year), regardless of your regular tax bracket.
- No Washington state tax: Washington has no tax on wages (its capital-gains tax does not apply to paychecks), so there is no state-level withholding on your bonus at all.
- FICA taxes still apply: Social Security (6.2% up to the annual wage base) and Medicare (1.45%, plus 0.9% for high earners) are withheld from bonuses just like regular wages.
- Over-withholding is common: The flat 22% federal rate is often higher than your actual effective rate. You'll receive the difference back as a tax refund when you file your annual return.
Your actual bonus tax depends on your total annual income, not just the bonus amount. The calculator gives you an estimate based on your inputs.
Frequently Asked Questions
About 29.65%: a flat 22% for federal income tax (37% for amounts over $1 million) plus 7.65% for Social Security and Medicare. Washington has no state income tax, so nothing extra is withheld at the state level. Your actual tax owed depends on your full-year income and is often lower — the difference comes back as a refund when you file.
The IRS requires employers to withhold federal income tax from supplemental wages (including bonuses) at a flat 22% rate for amounts up to $1 million. For bonus amounts exceeding $1 million in a calendar year, the rate jumps to 37%. Your employer may alternatively add the bonus to your regular paycheck and withhold using the aggregate method.
It depends on your total annual income and tax bracket. If the 22% flat withholding rate is higher than your actual effective tax rate on the bonus, you'll receive a refund. If you're in a higher bracket and the withholding was insufficient, you may owe additional taxes. Our calculator estimates both the withheld amount and your approximate actual tax liability.
No. Washington has no tax on wages (its capital-gains tax does not apply to paychecks), so bonuses face only federal income tax and FICA. That's a real advantage over high-tax states, where state withholding can take another 5–10% of a bonus.
Splitting a bonus across pay periods can sometimes reduce withholding if your employer uses the aggregate method, which annualizes your income. However, it doesn't change your actual tax liability—only the timing of withholding. For very large bonuses that push income past the $1 million threshold, splitting payments can avoid the 37% withholding rate on the excess.
Related Tools
- Washington Take-Home Pay Calculator — Calculate regular paycheck take-home pay in Washington
- Why Are Bonuses Taxed Higher? — Full explanation of how bonus withholding works
- Bonus Paycheck Tax Calculator — General bonus calculator for any state
Estimates are based on current federal and Washington tax rules. Actual withholding may vary depending on your employer's method and your full-year income.
For personalized advice, consult a qualified tax professional.