No, Your Bonus Isn't Taxed at 40%
The most persistent myth in personal finance: "bonuses are taxed at a higher rate." They're not. They're withheld differently, and the difference comes back to you at filing.
Why your bonus check looks so small
Employers withhold federal tax on bonuses at a flat 22% (the IRS supplemental wage rate), plus 7.65% payroll taxes, plus state withholding. Stack those and 30-40% can vanish from the check, which is where the myth comes from.
What actually happens at filing
The IRS doesn't have a special bonus rate. At filing, your bonus is just ordinary income taxed at your normal marginal rate. If your marginal rate is 12% and you were withheld 22%, the extra 10% comes back in your refund. If you're a high earner in the 32% bracket, you were under-withheld and will owe the difference.
Run your real numbers
The bonus tax calculator shows the check you'll actually receive, the tax the bonus truly adds, and the refund (or bill) the withholding gap creates.
Can you reduce tax on a bonus?
- 401(k): if your plan allows bonus deferrals, contributing part of it cuts the taxable amount directly.
- HSA: same effect if you have eligibility headroom.
- Timing: a December vs. January bonus lands in different tax years, occasionally worth negotiating if your income is about to change.
Frequently asked questions
Why was 40% taken from my bonus?
The combination of 22% federal supplemental withholding + 7.65% payroll taxes + state withholding. It's withholding, not your actual tax. The true tax settles at filing.
Is there ever a real higher bonus rate?
Above $1 million of supplemental wages in a year, mandatory federal withholding rises to 37%, and at that income your actual marginal rate is 37% anyway.
Do bonuses qualify for the new overtime deduction?
No. Bonuses aren't FLSA-required overtime premium pay. They're ordinary supplemental wages.