You were told your bonus would be $10,000. Then the deposit hit and it was closer to $6,500. The natural conclusion — “bonuses are taxed to death” — is wrong, and the distinction matters because it changes whether you should feel robbed (you shouldn’t) and what, if anything, to do about it. Your bonus wasn’t taxed at a higher rate. It was withheld at one.
Withholding is a prepayment, not the tax
When your employer pays a bonus, the IRS classifies it as a supplemental wage, and the most common method withholds federal income tax at a flat 22% (rising to 37% on bonus dollars above $1 million in a year). On top of that come FICA at 7.65% and any state income tax. Stack those up and a third or more of the headline figure can disappear before it reaches you.
But withholding is just a prepayment of tax sent to the government on your behalf. It is not the amount you actually owe. Your real tax is settled when you file your return, where the bonus is taxed as ordinary income at exactly the same brackets as your salary. If too much was withheld, the difference comes back as a refund.
When you get it back — and when you don’t
Whether the flat 22% helps or hurts depends on your real marginal rate (the subject of our piece on marginal vs effective tax rates):
- Marginal rate below 22% (say the 12% bracket): too much was withheld, and the excess comes back when you file.
- Marginal rate above 22% (say 32%): not enough was withheld on the bonus, and you may owe a bit more at tax time.
Either way, the 22% you saw on the pay stub is not your tax rate. The bonus tax calculator shows exactly what’s withheld from a bonus, and the effective tax rate calculator helps you find the real rate it’ll ultimately be taxed at.
The reframe
"Taxed at 40%" is really "withheld at ~35% (22% federal + FICA + state)." The tax owed is whatever your ordinary brackets say — and any over-withholding is money the government is holding for you until you file.
The aggregate method, and what you can actually do
Some employers use the aggregate method instead: they lump the bonus into a normal paycheck and withhold based on your W-4 as if you earned that much every period. Because that briefly projects a much higher annual income, the withholding can look even more savage — but again, it all washes out at filing.
What you can do:
- Shelter the income. Directing a bonus into a pre-tax 401(k) or an HSA lowers your taxable income, which genuinely reduces tax owed — not just withholding.
- Tune your W-4. If bonuses routinely leave you with a big refund, your overall withholding is running high; adjusting it keeps more in your pocket through the year (see why a refund isn’t a bonus).
- Stop dreading the stub. The deposit is smaller than the headline, but a chunk of the gap is a loan to the government you’ll collect back.
The takeaway
Your bonus is taxed exactly like the rest of your income — at your ordinary brackets, settled when you file. The eye-watering bite on the pay stub is supplemental withholding, a flat 22% federal prepayment plus FICA and state tax, not a special “bonus tax.” Judge the bonus by your real marginal rate, shelter it if you can, and remember that any over-withholding is yours to reclaim.