U.S. Bonus Tax Calculator
Estimate supplemental wage withholding, FICA, state/local withholding, and net bonus in USD.
Federal supplemental wage withholding: $3,300.00 Social Security: $930.00 Medicare: $217.50 Additional Medicare: $0.00 State/local withholding: $750.00 Total withholding: $5,197.50 Net bonus: $9,802.50
U.S. bonus withholding calculator guide
Estimate U.S. bonus withholding and net bonus
The U.S. Bonus Tax Calculator estimates flat supplemental wage federal withholding, Social Security, Medicare, Additional Medicare, optional state/local withholding, and net bonus amount. It is useful before payroll discussions, bonus payouts, and comparing bonus scenarios.
U.S. Bonus Tax Calculator FAQ
Can I use the result as final tax filing advice?
No. The tool is for quick estimates. Actual withholding can depend on payroll method, W-4 settings, state rules, benefits, and employer configuration.
What U.S. federal bonus withholding method does it use?
It uses a flat supplemental wage estimate: 22% federal withholding up to the high supplemental wage threshold, plus 37% on excess supplemental wages.
Why can the FICA amount change with year-to-date wages?
Social Security tax is capped by the annual wage base, while Medicare continues and Additional Medicare can apply after the filing-status threshold.
Does the tool save my bonus amount?
No. The calculation runs in your browser and does not save or upload the bonus amount you enter.