Bonuses can look like they are taxed more heavily than regular pay, but the biggest reason is usually withholding—not a special higher final federal income tax rate. Employers often treat bonuses as supplemental wages for payroll withholding, and Social Security, Medicare, and sometimes state or local taxes can also come out of the same payment.
That is why a bonus check can be much smaller than the headline bonus amount even though your final tax bill is ultimately based on your full-year tax situation.
Quick answer: why are bonuses taxed so high?
The IRS treats bonuses as supplemental wages for federal withholding purposes. Depending on how the bonus is paid, an employer may use a flat supplemental-wage withholding method or combine the bonus with regular wages and calculate withholding on the total.
On top of federal income tax withholding, a bonus can also be subject to Social Security and Medicare taxes and, where applicable, state or local payroll withholding. The combined deductions can make the payment feel as though it was taxed at an unusually high rate.
Bonuses are supplemental wages
The IRS lists bonuses among payments treated as supplemental wages. Other supplemental wages can include commissions, overtime pay, certain vacation or sick-pay amounts, and some other payments made in addition to regular wages.
This classification matters because employers can use special withholding rules for supplemental wages. It does not mean the bonus is automatically subject to a separate final federal income tax rate.
The 22% federal bonus withholding method
For 2026, the IRS supplemental-wage withholding rate remains 22% when the optional flat-rate method is allowed. For separately identified supplemental wages of $1 million or less, an employer can generally use this method when federal income tax has been withheld from the employee’s regular wages in the current or immediately preceding calendar year; otherwise, different withholding rules apply.
For example, if an employer pays a separately identified $5,000 bonus and uses the 22% flat method:
| Item | Amount |
|---|---|
| Gross bonus | $5,000.00 |
| Federal income tax withholding at 22% | −$1,100.00 |
| Amount remaining before FICA and other deductions | $3,900.00 |
The 22% is a withholding method. It is money sent toward your federal income tax during the year. It is not necessarily the rate your bonus will effectively face after your full-year tax return is calculated.
The aggregate method can make withholding look different
An employer may instead calculate bonus withholding using an aggregate method. In simplified terms, the employer combines the supplemental payment with regular wages, determines withholding on the combined amount using payroll withholding rules, then subtracts the withholding already attributable to the regular wages.
This can produce a withholding amount that is higher or lower than 22%, depending on the size of the payment, pay frequency, Form W-4 information, and the employee’s regular wages.
If you see a sudden change in the federal withholding line on your pay statement, What Is FIT on a Pay Stub? explains how federal income tax withholding differs from gross pay and final tax liability.
Social Security and Medicare also reduce a bonus check
Federal income tax withholding is only one deduction. Bonuses paid as wages are generally also subject to FICA payroll taxes—Social Security and Medicare—unless a specific exception applies.
- Social Security: the employee rate is 6.2% in 2026, up to the annual Social Security wage base of $184,500.
- Medicare: the employee rate is generally 1.45%, with no wage-base cap.
- Additional Medicare Tax: employers must begin withholding an additional 0.9% after an employee’s Medicare wages paid by that employer exceed $200,000 during the calendar year.
These payroll taxes are separate from federal income tax withholding, which is why looking only at the 22% bonus rate can underestimate the total amount withheld from the payment.
Example: why a $5,000 bonus can feel like it was taxed almost 30%
Assume an employee receives a $5,000 bonus, the employer uses the 22% federal supplemental-wage method, and the employee is still below the 2026 Social Security wage base. Ignoring state and local taxes, the deductions could look like this:
| Deduction | Rate | Amount |
|---|---|---|
| Federal income tax withholding | 22% | $1,100.00 |
| Social Security | 6.2% | $310.00 |
| Medicare | 1.45% | $72.50 |
| Total shown here | 29.65% | $1,482.50 |
| Bonus remaining | — | $3,517.50 |
This is why an employee can receive a $5,000 bonus and feel as though almost 30% disappeared before state tax, local tax, benefit deductions, or any Additional Medicare Tax is considered.
The example is a payroll illustration, not an estimate of your final income tax liability.
Are bonuses actually taxed more than salary?
Not necessarily. For federal income tax purposes, your final tax calculation generally looks at taxable income for the year rather than assigning ordinary bonus dollars their own permanent tax bracket simply because they were called a bonus.
The confusion comes from the difference between withholding and tax liability. Payroll withholding is a prepayment. Your tax return later compares the tax you actually owe with the payments and withholding credited to you during the year.
Can you get some of the bonus withholding back?
Possibly. If the total federal income tax withheld from all your paychecks is more than your final federal income tax liability after credits and other tax items are taken into account, the excess can contribute to a refund. If too little was withheld, you may instead owe additional tax.
This is another reason not to treat the amount withheld from one bonus check as the final tax cost of that bonus.
Why your bonus withholding may be higher than 22%
A bonus check can show total deductions above 22% for several reasons:
- Social Security and Medicare are withheld in addition to federal income tax.
- The employer uses the aggregate method instead of the optional 22% flat method.
- State income tax or state supplemental-wage withholding applies.
- Local payroll taxes apply where you work or live.
- Your employer takes benefit or retirement deductions from the bonus payment.
- Additional Medicare Tax withholding applies because wages paid by that employer have crossed $200,000 for the year.
What happens if supplemental wages exceed $1 million?
Special federal withholding rules apply when an employee’s supplemental wages exceed $1 million during the calendar year. For 2026, the IRS states that the mandatory flat withholding rate is 37% on the portion of supplemental wages above the $1 million threshold.
This rule affects a relatively small number of employees, but it is an important exception to the normal 22% supplemental-wage discussion.
Do states tax bonuses differently?
State rules vary. Some states do not impose a broad individual income tax on wage income, while others use their own withholding tables, flat supplemental rates, or other payroll methods. Local taxes can also apply in some cities or jurisdictions.
Because state rules differ, a bonus paid to two employees with the same federal situation can still produce different take-home amounts depending on where they work and live.
How to check whether your bonus withholding makes sense
If your bonus check looks unexpectedly small, start by checking the pay stub rather than assuming payroll used one giant tax rate.
- Confirm the gross bonus amount.
- Find the federal income tax withholding line.
- Check Social Security and Medicare separately.
- Review state and local withholding.
- Check retirement, insurance, or other payroll deductions.
- Ask payroll whether the bonus used the flat supplemental method or aggregate withholding if the calculation still seems unclear.
If you need help reading those lines, see What Is a Pay Stub?. You can also use the Paycheck Calculator with Taxes to compare regular pay, federal withholding, Social Security, Medicare, and take-home pay.
Bonus withholding vs gross pay and annual income
A bonus is part of gross employment earnings before payroll deductions. That means it can increase both the gross-pay figure on the paycheck and your annual employment income for the year.
For the underlying concepts, read What Is Gross Pay? and What Is Annual Income?.
2026 IRS sources used for this guide
This guide uses current IRS payroll guidance, including Publication 15 (2026), Employer’s Tax Guide, Publication 15-T (2026), Federal Income Tax Withholding Methods, and IRS Topic 751 for Social Security and Medicare withholding rates.
Tax withholding can depend on individual payroll facts and can change when tax rules change. This article is for general educational purposes and is not individualized tax advice.
Frequently asked questions
Why was my bonus taxed so high?
Your employer may have used supplemental-wage withholding, and the payment may also have Social Security, Medicare, state, local, and benefit deductions. Add those together and the total removed from the check can be much higher than the federal income tax withholding rate alone.
Are bonuses taxed at 22%?
Twenty-two percent is an optional federal income tax withholding rate that employers can use for qualifying supplemental-wage payments in 2026. It is not a universal final tax rate for every bonus.
Why are bonuses taxed higher than regular pay?
They may be withheld differently from regular pay. Payroll may use the supplemental-wage method or aggregate the bonus with regular wages. FICA, state tax, local tax, and other deductions can further reduce the payment.
Do bonuses get Social Security and Medicare taken out?
Generally, yes when the bonus is taxable wages. For 2026, the employee Social Security rate is 6.2% up to the $184,500 wage base, and the employee Medicare rate is generally 1.45%.
Will I get bonus taxes back in my refund?
Not automatically. If your total withholding for the year exceeds your final federal tax liability, the excess can contribute to a refund. If your withholding is too low, you may owe tax instead.
Does a bonus push me into a higher tax bracket?
A bonus increases taxable income and can cause some additional income to fall into a higher marginal tax bracket. That does not mean all of your income is suddenly taxed at the higher bracket rate.
The bottom line
A bonus can look heavily taxed because several deductions may hit the same payment at once. The key distinction is that withholding is not the same as final tax liability. For many separately paid bonuses, federal income tax withholding may use the 22% supplemental-wage method, while Social Security, Medicare, state or local taxes, and other deductions reduce the check further. Review each pay-stub line separately before concluding that your bonus itself was taxed at one unusually high rate.