Why Is My Bonus Taxed So Much? (It's Withholding, Not Tax)

This article is general information, not tax or financial advice. Tax rules change, individual situations vary, and every figure here is an estimate. Confirm specifics with a qualified tax professional before making money decisions.

No, your bonus isn’t taxed at a higher rate

You probably want this fast, so here it is: your bonus was not taxed at some punishing special rate. It was withheld differently, and that is a different thing.

Withholding is a prepayment toward your tax bill. It is an estimate your employer sends to the IRS on your behalf throughout the year. The actual tax you owe is settled later, when you file your return.

The IRS calls a bonus a “supplemental wage.” That label is what triggers the separate withholding rules, and it is the whole reason your check looked so light. The most common default is a flat 22% federal withholding on the bonus, which feels brutal on a single number but is not the same as paying 22% in permanent tax.

So the money that vanished from your bonus is not gone for good. A good chunk of it is probably coming back. Let’s walk through exactly what came out and why.

The two ways employers withhold on a bonus

The IRS gives employers two methods for withholding on supplemental wages. Which one your employer used explains why your bonus looked the way it did.

The first is the percentage method. Your employer withholds a flat 22% of the bonus for federal income tax, full stop, with no regard to your W-4 or your normal paycheck. This is the most common approach when a bonus is paid as its own separate check, and it is the source of nearly every “why so much?” complaint.

The second is the aggregate method. Here your employer lumps the bonus together with your regular pay for that period, then withholds on the combined total using the wage-bracket tables tied to your W-4. The problem is that the tables assume you earn that inflated amount every pay period, so they can briefly treat you as if you are in a higher bracket. The aggregate method often withholds even more than the flat 22%.

Either way, federal income tax is only part of the bite. FICA and state tax stack on top of whichever method your employer chose, which is why the total taken out can look like a third of the bonus or more.

What actually gets taken out of a bonus

Let’s lay out the full stack so the missing money makes sense. On a typical bonus, several things come out before you see a dollar.

Federal income tax withholding: a flat 22% under the percentage method (rising to 37% on the portion of supplemental wages above $1 million in a calendar year), or your wage-bracket amount under the aggregate method.
Social Security: 6.2%, on wages up to the 2026 Social Security wage base of $184,500.
Medicare: 1.45%, with no wage cap at all.
Additional Medicare: an extra 0.9% on wages above $200,000 for single filers, or $250,000 married filing jointly. Employers start withholding it once your wages pass $200,000.
State income tax: varies widely. Some states apply their own supplemental rate, and a handful charge no state income tax at all.

Here is a worked example. Say you get a $5,000 bonus as a separate check, in a state with no income tax, under the percentage method.

| Line | Rate | Amount | |---|---|---| | Bonus (gross) | | $5,000 | | Federal withholding | 22% | $1,100 | | Social Security | 6.2% | $310 | | Medicare | 1.45% | $72.50 | | Take-home | | ~$3,517.50 |

So about 30% disappeared on a no-income-tax check. Add a state with its own supplemental rate and the take-home drops further. That is the math behind the sticker shock, and none of it is a penalty for earning a bonus.

Your real tax is set by your marginal rate, not the 22%

This is the part that should make you feel better. The 22% is a placeholder, not your final bill.

The US tax system is marginal, which means different slices of your income are taxed at different rates, and only your top dollars get hit by your highest rate. A bonus does not get singled out for special treatment at filing time. It just stacks on top of your other income and is taxed at whatever your top marginal rate happens to be.

If your marginal rate is below 22%, the flat withholding took out more than you actually owe on that bonus. The excess comes back to you as a refund when you file. If your marginal rate is above 22%, the withholding fell a little short, and you may owe a small amount on the bonus at filing.

For a lot of workers, especially those in the 10% or 12% brackets, the 22% flat withholding means a chunk of the bonus is over-withheld and returned later. It feels like the bonus got hammered, but you are really just loaning that money to the government and getting it back. Annoying, yes. A higher tax, no.

How to estimate your true bonus take-home

You can sketch your real number in a few steps, then compare it to what was withheld to see if a refund is on the way.

Find your marginal bracket. Add the bonus to your total expected annual income and see which federal bracket your top dollars land in.
Apply that rate to the bonus for a rough federal tax estimate, instead of using the flat 22% withholding figure.
Add FICA: 6.2% Social Security (until your year-to-date wages pass $184,500) plus 1.45% Medicare.
Add state tax if your state has an income tax.
Compare that total to what your pay stub actually withheld. If withholding was higher, that gap is your likely refund.

One nuance most articles skip: a large bonus can push your year-to-date wages past the $184,500 Social Security cap. Once you cross it, Social Security stops coming out, so part of a big bonus may escape that 6.2% line entirely.

Doing this by hand gets fiddly once state rules and deductions enter the picture. This is the kind of math the Salary Calculator app (Stub44) is built for: enter your regular salary, drop the bonus into the Bonus/Commission bucket, pick your state and filing status, and read your net income across all 50 states plus DC. It runs the full federal, state, and FICA math so you can see the real take-home instead of guessing from a flat withholding number.

If you also want a sense of where your overall pay stands, our breakdown of what an $80,000 salary looks like after taxes by state walks through the same federal, FICA, and state layers on regular pay.

Can you lower the withholding on your bonus?

Mostly, no, and it helps to be honest about that. You generally cannot opt out of the 22% percentage method. It is the employer’s default, and most payroll systems will not let you override it for a one-off bonus.

What you can do is shape the rest of your year so you are not over-withheld. Routing part of the bonus into a pre-tax 401(k) or HSA lowers your taxable income, which trims the actual tax you owe on it. Some employers will let you defer a bonus into your retirement plan if you ask before it is paid.

You can also adjust your W-4 to reduce extra withholding elsewhere, so the over-withholding on the bonus is balanced out across your regular paychecks instead of waiting for a refund. And if a refund is coming either way, you can simply plan for it as a known amount rather than a surprise.

The one thing to keep straight: withholding is not the same as avoidable tax. You cannot make the underlying liability disappear by gaming the W-4. The goal is to keep more of your own money in hand during the year, not to dodge a bill that was never as big as the pay stub made it look.

When you are ready to see your own number, you can download Salary Calculator and model a bonus on top of your regular pay in about a minute.

Frequently Asked Questions

Are bonuses taxed at a higher rate than regular pay?

No. They are withheld differently, usually a flat 22% federal under the percentage method, but they are taxed at your normal marginal rate when you file. The 22% is an estimated prepayment, not a special bonus tax rate.

Why was 22% taken out of my bonus?

Your employer likely used the IRS percentage method for supplemental wages, which withholds a flat 22% of the bonus for federal income tax on amounts up to $1 million. FICA and any state tax come out on top of that.

Will I get my bonus tax back as a refund?

If the 22% federal withholding plus FICA and state tax is more than you actually owe at your marginal rate, the excess comes back as a refund when you file. If your marginal rate is above 22%, you may owe a little more instead.

What is the difference between the percentage and aggregate withholding methods?

The percentage method withholds a flat 22% on a separate bonus check. The aggregate method adds the bonus to your regular paycheck and withholds using your W-4 wage-bracket tables, which can briefly look like a higher bracket and withhold even more.

Yes. Bonuses are subject to 6.2% Social Security up to the 2026 wage base of $184,500 and 1.45% Medicare with no cap, plus 0.9% Additional Medicare on wages above $200,000 single or $250,000 married filing jointly.

Can I avoid the high withholding on my bonus?

You generally cannot opt out of the 22% percentage method. But routing part of the bonus into a pre-tax 401(k) or HSA, or adjusting your W-4 extra withholding, can balance out your year so you are not over-withheld.

Are bonuses taxed differently by state?

Yes. Some states apply their own supplemental withholding rate, and a few have no state income tax at all, so your bonus take-home depends partly on where you work.

How do I figure out my real bonus take-home?

Estimate the tax at your marginal bracket plus FICA and any state tax, then compare it to what was withheld. Or model it directly in Salary Calculator by adding the bonus to the Bonus/Commission bucket on top of your regular pay.