Bonus Tax Calculator
Bonuses paid separately from regular wages are often subject to 22% federal supplemental withholding (37% on amounts over $1 million year-to-date). Social Security and Medicare still apply. State rules vary.
What to enter: Salary or hourly rate is required. Everything else can be left blank if it does not apply — blank fields count as $0 or use the default shown in the field.
Income
Deductions (per paycheck)
All fields in this section are optional. Leave blank if you have no deductions of that type.
How bonus taxes work
The aggregate method (combining bonus with regular pay) vs. flat 22% supplemental rate can produce different withholding. Your actual tax liability is determined when you file — bonus withholding is a prepayment, not the final tax rate.
Bonus paycheck FAQ
How much tax is withheld on a bonus paycheck?
When bonuses are paid separately from regular wages, employers often use the IRS flat supplemental rate of 22% for federal income tax (37% on supplemental wages over $1 million year-to-date). Bonuses are still subject to Social Security and Medicare. State tax rules vary. Use our bonus tax calculator to estimate.
How much is Social Security and Medicare tax on my paycheck?
Employees pay 6.2% Social Security on wages up to the annual wage base ($184,500 in 2026) and 1.45% Medicare on all wages. Once year-to-date wages exceed $200,000, employers also withhold 0.9% Additional Medicare Tax on amounts above that threshold. These FICA taxes are separate from federal income tax.
What is the difference between gross pay and net pay?
Gross pay is your total earnings before any withholdings. Net pay (take-home pay) is what you receive after federal and state taxes, Social Security, Medicare, and deductions such as 401(k) or health insurance. For example, a $75,000 salary does not mean $6,250 per month net — withholding typically reduces that amount significantly.