Calculate your exact net bonus payout after 22% statutory supplemental withholding, FICA, and state payroll deductions, and see your true year-end tax adjustment.
| Withholding Item | Rate Applied | Withheld |
|---|---|---|
| Federal Supplemental Tax | 22.0% Flat Rate (IRS) | $2,200 |
| Social Security (FICA) | 6.2% (< $184,500 Cap) | $620 |
| Medicare (FICA) | 1.45% Uncapped | $145 |
| State Income Tax | 5.0% Supplemental | $500 |
| 401(k) Pre-Tax Contribution | 0% Deferral | $0 |
| Total Upfront Deductions | All Deductions | $3,465 |
When workers receive a bonus, they are often shocked to see 30% to 45% missing from their check. This occurs because the IRS requires employers to treat bonuses, commissions, severance, and overtime as supplemental wages governed by IRS Publication 15-T:
The Key Difference: Withholding ≠ Final Tax: Withholding is merely a preliminary prepayment toward your annual tax liability. At tax season, your bonus is lumped together with your regular salary on Form 1040. If your salary puts you in the 12% marginal bracket, you overpaid by 10% on your bonus and will receive a cash tax refund. If your salary puts you in the 24% or 32% bracket, you underpaid by 2% to 10% and will owe the difference!
* Disclaimer: This calculator provides withholding estimations for educational purposes only. State tax withholding regulations and individual employer payroll setups vary. Consult a qualified tax advisor or payroll department regarding specific withholding adjustments.
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