Why Is My Bonus Taxed So High? The 22% Rule

This article is for general information, not tax or legal advice. Tax rates and the Social Security wage base change most years. Verify current figures with the IRS and the SSA, or talk to a tax professional before filing.

You earned a $5,000 bonus, the deposit hit, and somehow only about $3,000 showed up. It feels like the government took a bigger cut of your bonus than it takes of your salary, as a penalty for doing good work.

Good news, though: that is not what happened. Your bonus was withheld at a higher rate, which is a different thing from being taxed at a higher rate. The rest of this article shows the difference and walks through exactly where each dollar went.

Withheld high, not taxed high

Withholding is a prepayment toward the tax you will eventually owe. Your employer estimates the tax and sends it to the IRS on your behalf each payday, and your actual tax bill gets settled later, when you file your return.

For bonuses, the IRS lets employers use a flat 22% federal withholding rate. So your employer parked 22% of the bonus with the IRS as an estimate.

That 22% has nothing to do with your personal tax bracket. A worker who normally lands in the 12% bracket and a worker in the 24% bracket can both see the same flat 22% pulled from a bonus. It is a withholding default that gets applied the same way to almost everyone.

When you file, the bonus gets pooled with the rest of your income and taxed at your real rate. If 22% was too much, the excess comes back as a refund. If it was too little, you make up the difference. More on that below.

What the IRS calls a bonus: “supplemental wages”

A bonus is not its own special category in the tax code. The IRS groups it with a bucket called supplemental wages.

Supplemental wages include bonuses, commissions, overtime, severance pay, back pay, prizes, and awards. Anything that is not your regular, recurring paycheck tends to land here.

This label matters because supplemental wages get their own withholding rules. Regular wages run through the standard withholding tables tied to your W-4. Supplemental wages can instead use a flat rate, which is where the 22% figure on your stub comes from.

The two withholding methods (and why your stub looks the way it does)

Employers can withhold on supplemental wages in two IRS-approved ways. Which one your employer uses explains most of the surprise.

The percentage method (flat rate). When a bonus is paid separately, or itemized as a separate line, the employer can withhold a flat 22% federal income tax on it, up to $1 million in supplemental wages for the year. Above $1 million, the rate on the excess jumps to 37%. These rates were made permanent under P.L. 119-21, which extended the rate structure from the 2017 tax law.

The aggregate method. Here the bonus gets added to your regular paycheck, and the whole combined amount runs through the normal withholding tables. The catch is annualization. The tables assume that inflated paycheck is your new normal every period, so they briefly treat you as if you earn far more per year and withhold at a higher rate.

The aggregate method is why some people see 30% or more pulled for federal alone. The table is overestimating your annual income from one big check, not charging you a higher tax.

Worked example: a $5,000 bonus

Under the percentage method, federal withholding on a $5,000 bonus is straightforward:

$5,000 x 22% = $1,100 in federal income tax withholding.

Under the aggregate method, if the bonus is bundled with a regular paycheck, the tables can withhold noticeably more, sometimes $1,300 to $1,500 or higher depending on your normal pay and W-4. The bonus and the eventual tax are identical either way; only the size of the upfront bite changes. That extra is just a bigger prepayment you can recover later.

Why it can feel like 40 percent: FICA and state stack on top

Even under the clean 22% percentage method, federal income tax is only one layer. A few other taxes apply to bonus dollars too, and they add up fast.

Social Security: 6.2%. This applies to wages up to the 2026 Social Security wage base of $184,500. Your bonus counts toward that base like any other wages.

Medicare: 1.45%. No cap. Every bonus dollar gets 1.45% withheld, and an extra 0.9% Additional Medicare Tax kicks in once your year-to-date wages pass $200,000.

State (and sometimes local) tax. Many states apply their own flat supplemental rate to bonuses, some use their regular tables, and a handful have no state income tax at all. Rates range widely.

Here is the stack on that same $5,000 bonus, using a sample 5% state supplemental rate and the percentage method:

| Layer | Rate | Amount | |---|---|---| | Federal income (supplemental) | 22% | $1,100 | | Social Security | 6.2% | $310 | | Medicare | 1.45% | $72.50 | | State (example) | 5% | $250 | | Total withheld | ~34.65% | $1,732.50 |

Net in your pocket: about $3,267. Add a higher state rate or the aggregate method, and you reach the 40% feeling quickly. None of those line items is a special “bonus penalty.” It is ordinary payroll math, applied to a lump sum all at once.

If you want to see this broken out line by line for your own numbers instead of guessing, WorkLogs44 lets you drop a bonus into its own income bucket and shows federal, state, and FICA itemized for all 50 states plus DC.

Do you get the money back? How it reconciles at tax time

Withholding and tax are not the same number, and the gap between them is settled on your return.

At year-end, the IRS does not care that part of your income arrived as a bonus. It pools your entire year of income, salary plus bonus, and taxes it at your real effective rate. The 22% that was withheld from the bonus is just credited against whatever you actually owe.

So the outcome depends on your marginal bracket:

Your top bracket is below 22% (say the 10% or 12% bracket): the flat 22% over-withheld your bonus, and the excess comes back as a refund.
Your top bracket is above 22% (say 24%, 32%, or higher): the 22% under-withheld, and you may owe the difference when you file.

This is also the difference between your marginal rate and your effective rate. Your marginal rate is the rate on your last dollar. Your effective rate is the blended average across all your income, and it is almost always lower. The bonus is taxed at the margin, but your whole return settles at the average.

What you can actually do about it

You cannot change the IRS withholding rules, but you have a few real levers over the final number.

Defer into a 401(k) or HSA. Routing part of the bonus into a traditional 401(k) or an HSA lowers your taxable income for the year. It will not reduce the FICA withheld, but it can cut your income tax and is one of the cleanest ways to keep more of a bonus working for you.

Check your W-4. Step 4 of the W-4 lets you fine-tune withholding. If bonuses routinely leave you with a large refund, you are lending the government money interest-free all year and can adjust.

Know which method your employer used. If your stub shows far more than 22% federal, ask payroll whether they used the aggregate method. That is not an error, but it explains the larger prepayment and the refund waiting for you.

Model the real net first. Before you spend a bonus, it helps to know the actual take-home rather than the gross. You can run the figures yourself with our calculator tools or read more in our payroll guides, then enter the bonus as its own income line and read the breakdown.

Frequently Asked Questions

Are bonuses actually taxed at a higher rate than my salary?

No. Bonuses are withheld at a flat 22% federal rate, but they are taxed at your normal marginal rate when you file. Withholding is a prepayment, not your final tax.

What is the federal bonus tax rate for 2026?

There is no separate bonus tax rate. Employers withhold a flat 22% federal income tax on supplemental wages up to $1 million, and 37% on the portion above $1 million, per IRS Publication 15.

Why did my bonus get taxed around 40 percent?

That figure stacks federal withholding of 22% on top of Social Security at 6.2%, Medicare at 1.45%, and any state or local tax. It is several taxes added together, not a single 40% income tax rate.

Will I get my bonus tax money back?

Possibly. If your true marginal rate is below 22%, the over-withheld amount comes back as a refund. If your rate is above 22%, you may owe more at filing.

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

The percentage method applies a flat 22% to the bonus. The aggregate method lumps the bonus with your regular pay and runs it through the withholding tables, which can withhold more by briefly pushing the combined check into a higher bracket.

Does FICA apply to bonuses?

Yes. Social Security at 6.2% up to the 2026 wage base of $184,500, and Medicare at 1.45% with an extra 0.9% over $200,000, apply to bonus pay exactly like regular wages.

Can I reduce taxes on my bonus?

You can lower your taxable income by routing part of the bonus into a 401(k) or HSA, or by adjusting your W-4. You cannot change the IRS withholding rules themselves, but over-withholding comes back at tax time.

Stop guessing what a bonus will actually net you. Get WorkLogs44 and see the federal, state, and FICA breakdown on any bonus, for one worker or your whole team.