Bonus Tax Calculator — Percent Method
IRS supplemental wage flat rate of 22% federal plus FICA and state supplemental rate.
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Wages already earned this year — used so the Social Security cap ($176,100) is applied cumulatively, not per bonus.
Bonus take-home
$3,518
Federal (22% flat)$1,100
Social Security$310
Medicare$73
State supplemental$0
Total tax$1,483
Estimate only. Results show your annualized federal, state and FICA tax liability divided by pay periods — not the exact per-paycheck withholding your employer computes from your W-4 (IRS Publication 15-T). Actual paychecks may differ. Not tax advice.