Signing Bonus After-Tax Calculator
Example: Signing bonus amount: 20000 $ · Federal supplemental rate: 22 % · State tax rate: 5 % · FICA payroll tax rate: 7.65 %
| Take-home bonus | $13,070 |
| Total withheld | $6,930 |
| Effective withholding rate | 34.65% |
Worked example
On a $20,000 signing bonus, federal supplemental withholding at 22% takes $4,400, state tax at 5% takes $1,000, and FICA at 7.65% takes $1,530. That is $6,930 withheld — an effective rate of about 34.65% — leaving roughly $13,070 in hand. The nearly $7,000 gap between the offer figure and the deposit is why you should never spend a bonus at its gross value.
Frequently asked questions
Why is a bonus withheld at 22%?
The IRS treats bonuses as supplemental wages, and employers commonly withhold federal tax on them at a flat 22% rate (higher for very large bonuses). This is withholding, not your final tax — if your actual bracket is lower, some comes back at tax time; if higher, you may owe more.
Will I get some of the withholding back?
Possibly. Withholding is a prepayment, and your true tax on the bonus is settled when you file. If the flat 22% over-withheld relative to your real marginal rate, the excess returns as part of your refund. If your bracket is above 22%, the bonus may actually be under-withheld, so do not assume a refund.
Are signing bonuses subject to clawback?
Often yes. Many signing bonuses must be repaid if you leave within a set period, typically one to two years, and you may owe the gross amount even though you only received the net. Read the clawback clause before you rely on the money, and keep enough to repay it if there is any chance you will leave early.
Can I negotiate the bonus structure?
Sometimes. You may be able to split a bonus across two tax years, convert part of it into a higher base salary, or shorten the clawback window. Since the base salary is permanent and a one-time bonus is not, weigh a smaller guaranteed raise against a larger one-time payment using our job offer comparison tool.