Understanding Bonus Taxes
Bonuses are treated as supplemental wages by the IRS and are subject to federal, state, and FICA taxes. The key difference from regular pay is the withholding method. For regular paychecks, your employer uses your W-4 information to withhold taxes throughout the year. For bonuses, employers typically use one of two methods: the flat 22% federal withholding rate or the aggregate method.
Flat Withholding (22%)
The flat 22% method is the simplest and most common approach. Your employer withholds 22% of the bonus for federal income tax (or 37% if the bonus exceeds $1 million, though this is rare). This method is straightforward but may not match your actual tax liability. If you're in a lower tax bracket, you might get a refund. If you're in a higher bracket, you might owe more at tax time. Additionally, Social Security and Medicare taxes are withheld on top of the 22%, and state taxes apply separately.
Aggregate Method
The aggregate method combines your bonus with your regular pay and calculates taxes as though all income came in one paycheck. This approach often results in more accurate withholding since it applies your actual tax bracket to the combined income. However, it's more complex for payroll departments and less commonly used. If your employer offers this option, it may be more favorable.
Social Security and Medicare on Bonuses
Social Security tax (6.2%) is withheld on bonus income, but only up to the annual wage cap ($168,600 in 2026). If your bonus plus regular salary exceeds this cap, no Social Security tax is withheld on the amount above it. Medicare tax (1.45%) has no cap and is withheld on all bonus income. For high earners, this can mean a lower tax rate on later-year bonuses if you've already reached the Social Security cap.
State Taxes on Bonuses
Bonuses are also subject to state income tax in most states. The state tax rate depends on your filing status and state of residence. States without income tax (Texas, Florida, Washington, etc.) don't withhold state tax on bonuses, effectively giving you a tax advantage. States with high income tax (California 9.3%, New York up to 8.8%) significantly reduce your bonus take-home.
Refunds vs. Owing More
After you file your tax return, the IRS compares all withholding during the year (including bonus withholding) to your actual tax liability. If more was withheld than necessary, you receive a refund. If less was withheld, you'll owe. This is why it's important to review your bonus withholding and your full-year tax situation together, not in isolation.
Frequently Asked Questions
Why isn't my entire bonus taxed at the flat 22%?
The 22% applies only to federal income tax withholding. Social Security (6.2%), Medicare (1.45%), and state taxes are separate and in addition to the 22%. These are mandatory payroll taxes unrelated to your federal income tax bracket.
Can I request different withholding on my bonus?
Yes. You can ask your payroll department to use the aggregate method, withhold extra, or use a different percentage. This is especially useful if you expect a large tax bill and want extra withholding to avoid owing at tax time.
What if I haven't reached the Social Security wage cap?
If your regular salary plus bonus is under $168,600, you'll pay Social Security tax on the full bonus (6.2%). If you're already over the cap for the year, no Social Security tax is withheld on the bonus.
Should I set aside money for taxes on my bonus?
Even if your employer withholds taxes, you should verify whether it's enough. Use this calculator and our Take-Home Pay Calculator to estimate your full-year tax liability. If withholding is insufficient, set aside the difference to avoid owing at tax time.
Can I choose when to receive my bonus to minimize taxes?
Timing doesn't change total taxes owed on the bonus, but it affects when withholding occurs. A bonus in a low-income year might face lower aggregate-method withholding. Consult a tax professional if you're trying to optimize bonus timing.