Bonus Tax Calculator
Estimate the taxes withheld from a bonus using the IRS flat supplemental wage rate.
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The IRS lets employers withhold a flat 22% federal rate on supplemental wages up to $1 million — your actual tax liability at filing may differ once combined with your regular income.
Worth Knowing
Bonuses feel taxed harshly because employers usually withhold them at the IRS flat supplemental rate of 22% (37% above $1 million), often higher than your normal paycheck withholding. But that's withholding, not your actual tax — a bonus is ordinary income taxed at your real marginal rate when you file. If the flat 22% withheld more than you owe, you get the difference back as a refund; the bonus isn't taxed at some special punitive rate.
How to Use
- Enter Bonus amount into the first field of the Bonus Tax Calculator.
- Fill in the rest: State.
- Your result appears instantly as you type — there's no submit button or page reload.
- The IRS lets employers withhold a flat 22% federal rate on supplemental wages up to $1 million — your actual tax liability at filing may differ once combined with your regular income.