Bonus payments are taxed differently than regular paychecks because they arrive as a lump sum
Your employer withholds federal income tax, Social Security tax, and Medicare tax from a bonus using one of two methods. The percentage method withholds a flat 22% of the bonus for federal income tax (or 37% if the bonus pushes your total pay over $1 million for the year). The aggregate method combines your bonus with your regular paycheck and calculates tax as if the combined amount were your normal pay for that period. Most employers use the percentage method because it is simpler, but either way, the amount withheld is not necessarily the amount you will owe when you file your tax return.
The withholding your employer takes out is an estimate. If you are in a lower tax bracket than the 22% withheld, you may receive a refund when you file. If you are in a higher bracket or have other income, you may owe more. State income tax, local taxes, and any retirement plan contributions also reduce what you take home, and the rules vary by location and plan type.
Key Takeaways
- Federal withholding on a bonus is usually 22% under the percentage method, but this is an estimate that may not match what you actually owe.
- Social Security tax (6.2%) and Medicare tax (1.45%) are withheld on bonuses the same way they are on regular pay, up to the Social Security wage base limit.
- Your actual tax bill depends on your total income for the year, your filing status, and deductions — not just the bonus amount.
- State and local income taxes are withheld separately and vary by where you live and work.
- You can adjust withholding by changing your W-4 form if you expect to owe or receive a large refund.
How the percentage method works
Under the percentage method, your employer withholds 22% of the bonus for federal income tax. If your bonus is $5,000, the withholding is $1,100. This 22% rate applies to most bonuses and is a flat calculation — your employer does not look at your other income or tax situation.
The 22% rate is a safe harbor set by the IRS. It is not your actual tax rate. The IRS chose 22% because it approximates the tax owed by most workers, but it will be too high for some and too low for others. If you are in the 12% tax bracket, you will likely receive a refund of the overage when you file. If you are in the 24% bracket or higher, you may owe additional tax.
There is one exception: if your bonus, combined with all other pay you have received so far in the calendar year, exceeds $1 million, the withholding on the amount over $1 million jumps to 37%. This applies to very few workers and only to the portion of the bonus above the $1 million threshold.
How the aggregate method works
Under the aggregate method, your employer combines your bonus with your regular paycheck for that pay period and calculates tax as if the combined amount were your normal pay. If you normally earn $2,000 every two weeks and receive a $5,000 bonus, your employer treats the $7,000 as if it were your regular biweekly pay and calculates withholding based on that.
This method often results in higher withholding because the larger combined amount may push you into a higher tax bracket for that pay period. However, the aggregate method can sometimes result in lower withholding if your bonus arrives in a pay period when you would normally have lower income. Most employers use the percentage method instead because it is simpler and more predictable.
You cannot choose which method your employer uses — that is your employer's decision. If you want to know which method was applied to your bonus, check your pay stub or ask your payroll department.
Social Security and Medicare taxes on bonuses
Social Security tax (6.2%) and Medicare tax (1.45%) are withheld on bonuses the same way they are on regular paychecks. Your employer takes 6.2% for Social Security and 1.45% for Medicare from the bonus amount. These are not estimates — they are fixed rates that do not change based on your income level or tax bracket.
There is one limit: Social Security tax is only withheld on earnings up to the annual wage base, which changes each year. In 2024, that limit is $168,600. If your total pay (including the bonus) exceeds this amount in a single year, no Social Security tax is withheld on the portion above the limit. Medicare tax has no wage base limit and is withheld on all income.
If you work for multiple employers in the same year and your combined earnings exceed the Social Security wage base, you may have overpaid Social Security tax. You can claim a credit for the overage on your tax return when you file.
State and local income tax withholding
State income tax withholding on bonuses follows your state's rules, which vary widely. Some states use a flat percentage similar to the federal percentage method. Others use the aggregate method. A few states have no income tax at all.
If you live in a state with income tax, your employer withholds based on the W-4 form you filed with them. If you work in a different state than where you live, you may owe tax to both states, and withholding may not cover both. Local income taxes (in cities like New York, Columbus, or Philadelphia) are also withheld separately and follow their own rules.
The best way to find out your state and local withholding is to check your pay stub after the bonus is deposited. The stub will show exactly what was withheld for state and local taxes. If you think the withholding is incorrect, contact your state tax authority or your employer's payroll department.
How to estimate what you will actually owe
To estimate your actual tax on the bonus, you need to know your total income for the year and your tax bracket. Add the bonus to all other income you expect to receive (wages, self-employment income, investment income, and so on). Then use the IRS tax tables or a tax calculator to find your total tax for the year.
Subtract the total tax withholding from all your paychecks so far this year, plus the withholding from the bonus. The difference is what you will owe or what you will receive as a refund when you file. This is an estimate because your actual tax depends on deductions, credits, and other factors that may change before you file.
If you expect to owe a large amount or receive a large refund, you can adjust your W-4 form to change your withholding for the rest of the year. This does not change the tax on the bonus already paid — it only affects future paychecks. You can file a new W-4 with your employer at any time.
What happens if too much or too little was withheld
If your employer withheld more tax than you actually owe, you will receive a refund when you file your tax return. This refund comes from the IRS, not from your employer. The IRS processes refunds over several weeks, and you can track the status using the IRS "Where's My Refund?" tool on the IRS website.
If your employer withheld less than you owe, you will have to pay the difference when you file. You can pay by check, electronic transfer, credit card, or installment plan through the IRS. If you cannot pay the full amount, the IRS offers payment plans that spread the debt over several months.
To avoid surprises, review your withholding after receiving a large bonus. If you are consistently getting large refunds or owing money at tax time, adjust your W-4 so that withholding is closer to your actual tax liability throughout the year.
Frequently Asked Questions
Is the 22% withheld on my bonus my actual tax rate?
No. The 22% is a withholding estimate set by the IRS. Your actual tax rate depends on your total income for the year and your tax bracket. If you are in a lower bracket, you will likely receive a refund. If you are in a higher bracket, you may owe more.
Can I avoid withholding on a bonus?
No. Federal law requires your employer to withhold income tax, Social Security tax, and Medicare tax from all wages, including bonuses. You cannot opt out of withholding, but you can adjust your W-4 to change the amount withheld on future paychecks.
What if I work in one state but live in another?
You may owe income tax to both states. Your employer withholds based on the state where you work (or where you filed your W-4). You may need to file a return in your home state as well and claim a credit for taxes paid to the other state to avoid double taxation.
Do I have to pay self-employment tax on a bonus?
No. Self-employment tax applies only to income from self-employment or business ownership. If you are an employee and receive a bonus as wages, you pay only regular income tax, Social Security tax, and Medicare tax — not self-employment tax.
Can I change my W-4 after receiving a bonus?
Yes. You can file a new W-4 with your employer at any time to adjust withholding on future paychecks. This does not change the withholding on the bonus already paid, but it can help you avoid overpaying or underpaying tax for the rest of the year.