How Bonuses Are Really Taxed in 2026 (It's Not 40%)
Published June 10, 2026
You get a $5,000 bonus, the deposit hits, and it’s nowhere near $5,000. Cue the office wisdom: “bonuses are taxed at 40%.” They’re not. Bonuses are withheld differently, but they’re taxed exactly like the rest of your wages. The difference between those two words is the whole story. For most people, it means part of that “missing” bonus money comes back at tax time.
Here’s how bonus withholding actually works in 2026, with the math.
Withholding is not tax
Two separate things happen to a bonus:
- Withholding: what your employer takes out of the check on payday, following IRS payroll rules. This is a prepayment, an estimate.
- Tax: what you actually owe, calculated on your tax return using the 2026 brackets, where your bonus is just ordinary income stacked on top of your salary.
If withholding overshoots your real tax, the difference comes back as a refund. If it undershoots, you owe the gap in April. The check stub tells you nothing about your final tax on the bonus, only about the estimate your employer was required to make.
Why bonuses get special withholding rules
The IRS calls bonuses supplemental wages, the same category as commissions, severance, and cash awards. Regular withholding formulas assume each paycheck represents your steady annual income; a one-time bonus breaks that assumption. So the IRS gives employers two approved methods.
The percentage method: a flat 22%
If your bonus is paid separately from (or identified separately on) your regular paycheck, your employer can withhold a flat 22% federal income tax on supplemental wages. That applies no matter what your W-4 says or which bracket you’re in.
- $5,000 bonus → $1,100 federal income tax withheld.
- Note 22% is not 40%, and it’s not a special “bonus tax rate.” It’s just the standard supplemental withholding rate.
For supplemental wages over $1 million in a year, the rules change: everything above $1 million must be withheld at the top rate of 37%, with no W-4 input allowed. Relevant for executives; not for most of us.
The aggregate method: lumped with regular pay
If the bonus is paid in the same check as regular wages without being separated, the employer adds it to that period’s wages and runs the normal withholding tables on the total. The tables then annualize the combined amount, and that’s where checks get ugly.
Say you earn $5,000/month and get a $5,000 bonus in your regular check. The withholding formula sees a $10,000 month and computes withholding as if you earn $120,000 a year, taking tax out at the marginal rates that income would face. Your bonus gets withheld at well above your true rate. Again: you haven’t lost that money. You’ve prepaid it, and it reconciles on your return.
Which method you get is your employer’s call (payroll software usually drives it). If your bonus check looks brutal, the aggregate method is the usual culprit.
FICA always applies
Whatever the income-tax method, payroll taxes hit bonuses just like regular wages in 2026:
- Social Security: 6.2% on wages up to the $184,500 wage base. (If your salary has already crossed $184,500 by bonus time, no Social Security comes out of the bonus.)
- Medicare: 1.45%, no cap, plus the 0.9% Additional Medicare withholding on wages over $200,000 in a calendar year.
So even a perfectly bracket-matched bonus loses at least 7.65% to FICA on top of income tax withholding.
States have their own supplemental rates
Most states with an income tax also tax bonuses, and many publish their own flat supplemental withholding rates, which vary widely. Some states use a flat percentage for bonuses, others just run their regular withholding tables, and no-income-tax states like Texas and Florida take nothing. This is often the forgotten line on a bonus stub. Check what your state takes with your state’s paycheck calculator.
Worked example: a $5,000 bonus in 2026
Maya is single, earns $85,000, and gets a $5,000 bonus paid as a separate check. Her employer uses the percentage method. Assume an illustrative 5% state supplemental rate (yours may differ, or be zero).
| Line item | Rate | Amount |
|---|---|---|
| Bonus | — | $5,000.00 |
| Federal income tax withheld | 22% | −$1,100.00 |
| Social Security | 6.2% | −$310.00 |
| Medicare | 1.45% | −$72.50 |
| State withholding (illustrative) | 5% | −$250.00 |
| Take-home | $3,267.50 |
Total withholding: $1,732.50, about 34.7%. There’s the source of the “40%” myth. People see a third or more of the bonus gone and round up. But more than a third of that withholding is FICA and state tax, which regular paychecks pay too; the federal income tax piece is only 22%.
Now the part everyone skips: what Maya actually owes
Maya’s bonus is just $5,000 of extra ordinary income. At $85,000 salary, her 2026 taxable income is $68,900 after the $16,100 standard deduction, inside the 22% bracket, which for single filers runs from $50,400 to $105,700 of taxable income. The entire bonus lands in that bracket.
- True federal income tax on the bonus: $5,000 × 22% = $1,100
- Federal income tax withheld: $1,100
For Maya, the percentage method nails it. But shift the salary and the story changes:
| Salary (single) | Marginal bracket | True federal tax on $5,000 bonus | Withheld at 22% | At filing |
|---|---|---|---|---|
| $45,000 | 12% | $600 | $1,100 | $500 refund |
| $85,000 | 22% | $1,100 | $1,100 | Even |
| $160,000 | 24% | $1,200 | $1,100 | Owe $100 |
That’s the whole mechanism in one table. Lower earners get over-withheld at the flat 22% and recover the difference at filing. Higher earners get slightly under-withheld and settle up in April. Nobody pays a special bonus rate.
Five takeaways before your next bonus
1. Don’t turn down a bonus (or raise) over taxes. A bonus can never reduce your take-home pay. Each marginal dollar is taxed at your bracket rate at most. You always keep the majority of it.
2. A brutal bonus check usually means the aggregate method. Ask payroll which method they use. Some employers will pay bonuses as separate checks (percentage method) if asked, which often withholds less for mid-bracket earners.
3. Big bonus + high salary = check your withholding. If you’re in the 24% bracket or above, the 22% flat rate under-withholds on every bonus dollar. A large enough gap can trigger an underpayment penalty. Add a Step 4(c) amount to your W-4 or make an estimated payment.
4. A bonus is a 401(k) opportunity. The 2026 contribution limit is $24,500. If your plan allows bonus deferrals, routing part of a bonus into a traditional 401(k) skips federal income tax withholding on that portion entirely (FICA still applies) and cuts your real tax at your marginal rate: 24 cents saved per dollar for a 24%-bracket earner. An IRA contribution (2026 limit: $7,500) can do similar work after the fact if you’re eligible to deduct it.
5. The stub is an estimate; the return is the truth. Judge your bonus by your tax return, not by the deposit.
Run your own numbers
Bonus math depends on your salary, state, filing status, and which method your employer uses. To see your real marginal rate, find where your income lands in the 2026 brackets, then model the check: your state’s paycheck calculator handles federal, FICA, and state lines together. If your “bonus” is really extra hours, that’s regular wages withheld normally, so price it with the overtime pay calculator. And if you’re comparing a bonus-heavy offer against a higher base rate, normalize them with the hourly to salary converter first.
In 2026, federal bonus withholding is a flat 22% (37% only above $1 million), FICA takes its usual 7.65%, and your state may add its own slice. That can push a check’s deductions past 30%. Your actual tax on the bonus is just your ordinary bracket rate, though, and the difference comes back when you file.