How Bonuses Are Taxed in 2026, and What You Get Back

A bonus is ordinary income. It lands on the same W-2 as your salary, and by the time you file it is taxed at exactly the same rates as every other dollar you earned. Nothing in the tax code taxes bonuses at a special rate.

What is different is withholding. Payroll software cannot know what your total year will look like when a bonus is paid in March, so the IRS gives employers a shortcut for what it calls supplemental wages: bonuses, commissions, severance, awards, back pay, and payouts of unused leave. The shortcut is deliberately crude. It is a placeholder that gets trued up when you file.

That gap between the crude placeholder and your real tax bill is why bonus season generates so much confusion. People see a payslip showing a third of the money gone and conclude the government took a third. Usually it did not, and sometimes it took less than it should have.

Why does a bonus look like it was taxed at a higher rate?

Because withholding on a bonus is calculated separately from withholding on your salary, and the separate calculation ignores your personal circumstances. Regular paycheck withholding uses your W-4, your filing status, and an assumption that this paycheck repeats all year. The supplemental method throws all of that away and applies one rate to the whole bonus.

Your regular paycheck already absorbs your standard deduction and your lowest brackets. A bonus arrives with none of that shelter applied to it. Add Social Security and Medicare on top, plus state withholding, and the deduction line on a bonus payslip can easily reach 30% or more even when your actual marginal rate is 22%.

How much federal tax is withheld from a bonus in 2026?

Under the percentage method, a flat 22% of the bonus is withheld for federal income tax. Once your supplemental wages from one employer pass $1,000,000 in a calendar year, the excess above that threshold is withheld at 37%. Those are withholding rates, not tax rates, and they are mandatory rather than optional above the million-dollar line.

The percentage method only applies when the employer pays the bonus separately from regular wages, or identifies it separately on a combined payslip. If the bonus is simply folded into a normal paycheck with no separate line, the employer must use the aggregate method instead.

What does a $10,000 bonus actually pay out?

A $10,000 bonus for an employee in a flat-tax state such as Illinois pays out $6,540 after federal withholding, Social Security, Medicare, and state income tax. The federal piece is $2,200, payroll taxes take $765, and Illinois takes $495 at its flat rate of 4.95%.

That is 65.4% of the headline figure, and the payslip will read as though 34.6% went in tax. Only the $2,200 line is provisional. The $765 of payroll tax is final and will not come back. The Illinois line is final too, because Illinois taxes at one rate regardless of income. Run your own state and salary through the bonus tax calculator to see the same arithmetic with your numbers.

Will I get the difference back?

Only if 22% was more than the bonus actually owed. The flat rate is a guess at your marginal rate. When your real marginal rate is lower, the excess comes back as refund. When it is higher, you owe the shortfall in April, and nobody tells you in advance.

A single filer whose taxable income is already above $105,700 in 2026 is in the 24% band, so every bonus withheld at 22% quietly builds a shortfall. Two large bonuses in one year can turn that into a four-figure April bill. The federal tax brackets for 2026 show exactly where each band starts.

How are bonuses over $1 million withheld?

The first $1,000,000 of supplemental wages in a calendar year is withheld at 22%. Everything above that is withheld at 37%, the top marginal rate. The split is per employer, per calendar year, and it is not something the employee can waive on a W-4.

Withholding the whole $1,200,000 at 22% would have produced $264,000, so the two-tier rule pulls an extra $30,000 forward. For an executive whose full-year marginal rate really is 37%, that is closer to correct, not a penalty.

What is the aggregate method and why does it hit harder?

The aggregate method adds the bonus to the regular wages in the same paycheck, then withholds as though that inflated paycheck were your normal pay for every period of the year. A $10,000 bonus dropped into a $2,500 biweekly check makes a $12,500 check, which annualizes to $325,000, so the withholding tables treat you as a high earner for that one payment.

The over-withholding is refunded when you file. But the cash is gone in the meantime, and there is no way to reclaim it early other than adjusting your W-4 for the rest of the year. Employers choose the method; employees cannot demand one.

Can I reduce the tax on a bonus?

Yes, by moving money into a pre-tax account before it is taxed. Routing part of a bonus into a traditional 401(k) removes it from federal taxable income for the year, at the cost of locking it up until retirement. A traditional IRA contribution can do the same if you are within the deduction income range.

The limit is that payroll tax does not go away. Social Security and Medicare apply to 401(k) deferrals, so on a $10,000 bonus deferred in full you still pay the $765. What you save is the income tax: at a 24% marginal rate that is $2,400. The 401(k) contribution limits for 2026 cap the elective deferral at $24,500, and a bonus is a fast way to use up headroom you were never going to fill from salary alone.

Common mistakes

Assuming 22% is your tax rate. It is a withholding rate. Filers in the 24%, 32% and 35% bands routinely under-withhold on bonuses and are surprised in April. Estimate your marginal rate, and if it is above 22%, set aside the difference rather than spending the whole net figure.

Adjusting the W-4 in a panic after the bonus. Withholding changes apply to future paychecks only, so a W-4 filed the week after a March bonus corrects nine months of salary withholding you did not need to change. If you want the bonus covered, add a specific extra dollar amount for the remaining pay periods rather than changing your filing status.

Deferring 100% of a bonus into a 401(k) without checking the match. Some employer matches are calculated per pay period. Filling the annual deferral limit with one bonus can end contributions for the rest of the year, and with them the match on every later paycheck unless the plan has a true-up provision. Read the plan document before doing it.

Forgetting the Social Security cap. Once your year-to-date wages pass $184,500, the 6.2% Social Security line stops. A December bonus paid to someone already above the cap keeps $620 more per $10,000 than the same bonus paid in January. That is a timing question worth raising with a manager if the timing is flexible.

Treating a signing bonus as clean money. Signing bonuses usually carry clawback clauses. If you leave inside the window you may have to repay the gross amount while having only received the net. Read the repayment clause before you spend it.

When the flat rate works in your favor

If your marginal rate is 10% or 12%, flat 22% withholding takes more than the bonus owes, and the surplus is an interest-free loan to the government until your refund arrives. That is a real cost for someone on a tight budget, and it is the strongest argument for adjusting withholding on the rest of your pay to compensate.

The flat method also ignores credits. A household that qualifies for large refundable credits may find that the bonus withholding is entirely refunded, which makes bonus timing near a year-end a matter of cash flow, not tax. And none of this applies to non-cash awards, which are taxed on fair market value and may be withheld against your regular pay, quietly shrinking a normal paycheck.

What this page does not cover

State supplemental withholding is separate and varies. Some states apply their own flat supplemental rate to a bonus, some tax it as ordinary wages, and nine take nothing from wage income at all. Check your state's figures before assuming the federal treatment is the whole bill.

Three other cases sit outside this guidance. Equity compensation, where restricted stock vesting is supplemental income but the withholding often comes out of the shares themselves. Deferred bonuses paid in a later tax year, which land against that year's brackets, not this one's. And bonuses paid to somebody who is not an employee, which are self-employment income with no withholding at all and a self-employment tax liability attached.

Nothing here is advice for your return. It describes how withholding is computed, which is a different question from what you will owe.

Before your next bonus lands

• Work out your marginal federal rate from your projected taxable income for the year.
• If that rate is above 22%, calculate the shortfall on the bonus and set the cash aside.
• Ask payroll whether they use the percentage method or the aggregate method.
• Check your year-to-date wages against the $184,500 Social Security wage base.
• Check whether your 401(k) plan trues up the match at year end before deferring a large share.
• Confirm your state's treatment; nine states do not tax wage income at all.
• Read any clawback or repayment clause attached to a signing or retention bonus.
• Keep the bonus payslip; it is the only record showing which withholding method was used.

What to watch next

The supplemental withholding rates are tied to the federal rate schedule, so they move when the schedule moves. The Social Security wage base is reset annually and rises with average wages, which shifts the point in the year where the 6.2% line stops. State treatment changes more often than federal: several states have been flattening their income tax rates, which changes the state column of the table above without touching the federal one. Check the figures for the calendar year the bonus is paid in, not the year you file.