How much tax will be withheld from my bonus in 2026 or 2027 planning?
Use this bonus withholding calculator to estimate how much federal tax may be withheld from a bonus, commission, or other supplemental wage payment. Compare the flat supplemental rate with an aggregate paycheck method to understand the withholding impact.
bonus tax withholding calculator
Quick answer
Bonus withholding is often calculated under supplemental wage rules, either at a flat federal rate or by adding the bonus to regular wages for an aggregate calculation. Withholding is not the same as final tax, so a refund or balance due can still happen.
Also answers
- bonus paycheck calculator
- supplemental wage withholding
- bonus tax rate calculator
- commission withholding calculator
Good fit when
- Estimating net bonus pay
- Checking whether supplemental withholding may be too low
- Planning W-4 changes after a large bonus
Have ready
- Bonus amount and regular wages
- Pay frequency and withholding method
- Filing status and W-4 assumptions
Result you get
Estimated federal bonus withholding and approximate net bonus after federal payroll taxes.
How this calculation works
- Estimates bonus withholding using the selected method and flat rate if applicable.
- Compares bonus tax impact to your projected marginal rate.
- Shows net bonus and any estimated withholding shortfall.
Common mistakes and caveats
- State and local bonus withholding are not included.
- Employer payroll systems may apply different supplemental wage rules.
- Large supplemental wages can trigger higher federal rates.
FAQ
Is the 22% flat rate always used for bonuses?
No. Employers may use the aggregate method or higher rates for large supplemental wages.
TaxGuide Pro provides free state and federal tax calculators for individuals, freelancers, and small businesses.