Bonus Tax Calculator
Estimate how much of a bonus may be withheld for federal supplemental wage tax, FICA, and optional state income tax.
The calculator supports the common flat supplemental method.
Estimated net bonus$3,517.50
Federal withholding$1,100.00
FICA on bonus$382.50
State estimate$0.00
| Bonus gross | $5,000.00 | |
|---|---|---|
| Flat supplemental federal rate | 22% |
Assumptions
- Uses the flat supplemental wage withholding method.
- Actual tax liability is reconciled on the tax return.
How this calculator works
Formula used
Net bonus = bonus - supplemental federal withholding - FICA - state withholding estimate.
Example calculation
A $5,000 bonus with 22% federal supplemental withholding has $1,100 federal withholding before FICA and state tax.
Bonus Tax Calculator FAQ
Are these tax calculators official IRS tools?
No. These calculators are educational estimators for U.S. planning. They do not replace IRS forms, payroll software, a CPA, or legal advice.
Why might my actual paycheck or tax bill be different?
Actual results can change because of credits, pre-tax benefits, local taxes, payroll timing, itemized deductions, employer setup, and updated federal or state rules.