Bonus Tax Calculator
See what is left of a bonus after supplemental withholding.
Enter your values
Enter the bonus amount in $.
Enter the federal supplemental rate in %.
Enter the state tax rate in %.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Net bonus
- $3,317.50
- Federal withholding
- $1,100.00
- FICA
- $382.50
- State tax
- $200.00
Working
- 1$5,000.00 - $1,682.50 = $3,317.50
Quick answer
Most US bonuses under $1M are withheld at a flat 22% federal supplemental rate, plus 7.65% FICA and any state tax.
net = bonus x (1 - federal - FICA - state)
At a glance
| What it does | See what is left of a bonus after supplemental withholding. |
|---|---|
| Category | Finance |
| Inputs needed | Bonus amount, Federal supplemental rate, State tax rate |
| Main output | Net bonus |
| Formula | net = bonus x (1 - federal - FICA - state) |
| Cost | Free — no sign-up, no download |
How to use the Bonus Tax Calculator
- 1Enter the gross bonus your employer quoted.
- 2Adjust the federal supplemental rate if your bonus exceeds $1M (37% applies above that).
- 3Add your state rate to see the true net.
Inputs explained
- Bonus amount($)
- Enter the bonus amount in $.
- Federal supplemental rate(%)
- Enter the federal supplemental rate in %.
- State tax rate(%)
- Enter the state tax rate in %.
Worked example
Using the values the calculator loads with:
Inputs
- Bonus amount5000 $
- Federal supplemental rate22 %
- State tax rate4 %
Results
- Net bonus$3,317.50
- Federal withholding$1,100.00
- FICA$382.50
- State tax$200.00
- $5,000.00 - $1,682.50 = $3,317.50
Frequently asked questions
Can I get some back?
Yes. Withholding is not the final tax; if 22% is more than your bracket you recover the difference at filing.
Does a 401(k) deferral help?
Deferring part of the bonus reduces federal withholding on that portion.
What do I need to enter into the Bonus Tax Calculator?
Just 3 values: bonus amount, federal supplemental rate, state tax rate. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Bonus Tax Calculator work out the answer?
Most US bonuses under $1M are withheld at a flat 22% federal supplemental rate, plus 7.65% FICA and any state tax. It applies the formula net = bonus x (1 - federal - FICA - state) and shows the working so you can check each step by hand.
Is the Bonus Tax Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.