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Bonus Tax Calculator

Estimate the withholding on a bonus paid in a separate check (flat 22% federal rate, 37% above $1 million) or together with regular pay, and see your net bonus.

  • Calculators

    15

    Paycheck, overtime, bonus and more

  • Coverage

    50 states + DC

    Labeled by data status

  • Tax Years

    2025–2026

    Labeled projections to 2030

  • Privacy Status

    On your device

    Figures are not sent anywhere

Your estimate

Enter your pay details, then calculate.

Calculation method
Federal 2026: VerifiedTX: Current law

Simple inputs only. Advanced options are ignored.

How to use it

  1. Enter your regular salary and the bonus amount.
  2. Choose whether the bonus is paid separately or with a regular paycheck.
  3. Select your state and calculate.

How bonuses are withheld

Bonuses are supplemental wages. If paid separately, employers may withhold a flat 22% federal rate (37% on supplemental wages over $1 million in the year). With the aggregate method, the bonus is added to a regular paycheck and withheld as if that larger check were your normal pay. Either way Social Security and Medicare apply, and the tax you actually owe is settled on your return.

More paycheck calculators

Limits and known limitations

  • State supplemental withholding rates are not modeled separately; state tax is estimated at your annual rate.
  • Bonus withholding is an advance payment; your real tax is settled on your return.

Frequently asked questions

Why was so much taken from my bonus?

Federal withholding on separately paid bonuses is usually a flat 22%, plus 7.65% Social Security and Medicare and any state tax. If your actual tax rate is lower, the difference comes back as a refund.