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Bonus Tax Calculator
See how much of your bonus you actually keep after withholding.
Enter your details
Results
Bonus After Tax
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Federal Withholding (22%)
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FICA (7.65%)
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How to use the Bonus Tax Calculator
Enter your gross bonus to estimate federal withholding (flat 22% supplemental rate) and FICA.
Frequently Asked Questions
The IRS lets employers withhold a flat 22% on supplemental wages up to $1M instead of your marginal rate. Your actual tax is settled at filing time.
Often yes — if 22% exceeds your marginal rate, the difference comes back as a refund when you file.