Bonus Tax Calculator

Introduction

When you receive a bonus at work, the IRS treats it differently than your regular paycheck. Bonuses are considered "supplemental wages," and they are often taxed at a flat 22% federal rate — or 37% on amounts over $1 million. On top of federal taxes, your bonus may also be subject to state taxes, Social Security, Medicare, and local taxes. All of these deductions can add up fast, which means the amount you actually take home is usually much less than the full bonus.

Our Bonus Tax Calculator helps you figure out exactly how much of your bonus you will keep after taxes. Simply enter your bonus amount, select your state, choose your tax year, and pick a withholding method. The calculator handles the rest, including Social Security wage base caps, Additional Medicare Tax for high earners, and state supplemental tax rates for all 50 states. You can choose between the Percentage (Flat) Method, which applies the standard 22% federal rate, or the Aggregate Method, which combines your bonus with your regular pay to determine your federal withholding based on marginal tax brackets.

The results give you a full breakdown of every tax taken from your bonus — federal, state, FICA, and local — along with your effective tax rate, a side-by-side comparison at different bonus levels, and easy-to-read charts. Whether you just got a year-end bonus, a signing bonus, or a performance award, this tool gives you a clear picture of your take-home pay so there are no surprises on payday.

How to Use Our Bonus Tax Calculator

Enter details about your bonus, income, and tax situation below to find out how much of your bonus you will actually take home after federal, state, and FICA taxes are withheld.

Bonus Amount: Enter the total gross bonus your employer is paying you before any taxes are taken out.

Tax Year: Pick the tax year that applies to your bonus. Choose 2025 or 2024, since tax brackets and limits change each year.

State: Select the state where you work. Each state has a different income tax rate, and some states like Texas and Florida have no state income tax at all. You can also use our Sales Tax Calculator to understand other tax obligations in your state.

Pay Frequency: Choose how often you get paid, such as weekly, bi-weekly, semi-monthly, or monthly. This is used when calculating taxes under the aggregate method. If you need help converting between pay frequencies, our Hourly to Salary Calculator or Salary to Hourly Calculator can be useful.

Federal Withholding Method: Pick either the Percentage (Flat) method or the Aggregate method. The flat method taxes your bonus at a straight 22% federal rate (37% for amounts over $1 million). The aggregate method combines your bonus with your regular paycheck to figure out the tax based on your income tax bracket. Most employers use the flat method.

Filing Status: Select your tax filing status — Single, Married Filing Jointly, Married Filing Separately, or Head of Household. This affects your federal tax brackets and Additional Medicare Tax threshold.

Regular Pay Per Period (Aggregate Method Only): Enter your gross pay for a single pay period before taxes. This is only needed if you choose the aggregate method.

Year-to-Date Gross Income (Aggregate Method Only): Enter the total gross income you have earned so far this year before this bonus. This helps the aggregate method estimate your tax bracket.

Federal W-4 Extra Withholding (Aggregate Method Only): Enter any extra federal withholding amount from line 4(c) of your W-4 form. Leave this at zero if you have no additional withholding.

Pre-Tax Deductions Per Period (Aggregate Method Only): Enter any pre-tax deductions you have each pay period, such as 401(k) contributions or HSA payments.

YTD Social Security Wages: Enter your total wages subject to Social Security tax so far this year. This determines whether your bonus pushes you past the annual Social Security wage base cap ($176,100 in 2025), after which no more Social Security tax is owed.

YTD Medicare Wages: Enter your total Medicare wages earned so far this year. This is used to calculate the Additional Medicare Tax of 0.9% that applies once your wages exceed $200,000 (Single) or $250,000 (Married Filing Jointly).

Local/City Tax Rate: If your city or county charges a local income tax (such as New York City), enter that tax rate as a percentage. Leave it at zero if no local tax applies to you.

Bonus Tax Calculator: How Your Bonus Gets Taxed

When you get a bonus at work, the IRS treats it differently from your regular paycheck. Bonuses are called supplemental wages, and they follow their own set of withholding rules. This means the amount of taxes taken out of your bonus can feel surprisingly high. Our Bonus Tax Calculator helps you figure out exactly how much of your bonus you'll actually take home after federal, state, and payroll taxes are withheld.

How Are Bonuses Taxed at the Federal Level?

There are two main methods employers can use to withhold federal income tax from your bonus:

• Percentage (Flat) Method: This is the most common approach. The IRS requires a flat 22% federal withholding rate on supplemental wages up to $1 million. Any bonus amount above $1 million is withheld at 37%. Your employer simply multiplies your bonus by the flat rate — your regular salary doesn't factor in.
• Aggregate Method: With this approach, your employer adds the bonus to your regular paycheck for that pay period and withholds taxes on the combined total as if it were a single payment. This can result in higher or lower withholding compared to the flat method, depending on your income level and tax bracket.

It's important to understand that these are withholding rates, not your actual tax rate. When you file your tax return, your bonus is simply added to your total income and taxed at your normal marginal rates. If too much was withheld, you'll get a refund. If too little was withheld, you'll owe the difference.

FICA Taxes on Bonuses

Your bonus is also subject to FICA taxes, which include Social Security and Medicare. Social Security tax is 6.2% on wages up to the annual wage base limit ($176,100 in 2025 and $168,600 in 2024). Once your year-to-date wages hit that cap, no more Social Security tax is taken out. Medicare tax is 1.45% on all wages with no cap. If your total wages for the year exceed $200,000 (Single) or $250,000 (Married Filing Jointly), an extra 0.9% Additional Medicare Tax applies to wages above that threshold. If you're self-employed and receiving bonus-like income, our Self Employment Tax Calculator can help you estimate the full FICA burden.

State and Local Taxes on Bonuses

Most states treat bonuses as supplemental income and apply a flat state withholding rate. Some states, like Texas, Florida, Nevada, and Washington, have no state income tax at all, so your bonus won't be reduced by state taxes if you live there. Other states, like California and Oregon, have rates that can exceed 9%. If you live in a city with a local income tax — such as New York City — that tax is applied on top of everything else. For a broader view of your state and local tax obligations, you may also want to check our Property Tax Calculator.

Why Does My Bonus Seem So Heavily Taxed?

Many people feel like their bonus is taxed at a higher rate than their regular pay. In most cases, the withholding is higher, but the actual tax owed may not be. The 22% flat federal withholding rate is often more than what someone in the 10% or 12% bracket would actually owe. The difference comes back to you as a tax refund when you file. On the other hand, if you're in the 32% or 35% bracket, the 22% withholding may not be enough, and you could owe money at tax time.

Tips to Reduce Taxes on Your Bonus

• Contribute to a 401(k): If your employer allows it, directing part or all of your bonus into a pre-tax retirement account reduces the taxable amount. Use our 401k Calculator to see how increased contributions affect your retirement savings.
• HSA contributions: Health Savings Account contributions made through payroll are also pre-tax and lower your taxable bonus income. Our HSA Calculator can help you plan your contributions.
• Adjust your W-4: If you know you'll receive a large bonus, you can adjust your W-4 withholding on regular paychecks to account for the expected over-withholding or under-withholding.
• Timing matters: If you're close to the Social Security wage base cap, a bonus received later in the year may not be subject to the 6.2% Social Security tax, saving you money.
• Invest the bonus wisely: Consider putting your after-tax bonus into a Roth IRA or other investment accounts to grow your wealth over time. Tools like the Compound Interest Calculator can show you the long-term impact of investing your bonus.

Use the calculator above to enter your bonus amount, select your state, choose a withholding method, and see a full breakdown of every tax that will be taken out. The comparison table also shows how different bonus sizes would be taxed under your same settings, so you can plan ahead no matter the amount. For additional income-related calculations, you may also find our Take Home Pay Calculator, Overtime Calculator, and Capital Gains Tax Calculator helpful for managing your total tax picture.

Frequently Asked Questions

What is the flat 22% bonus tax rate?

The IRS requires employers to withhold federal income tax on bonuses at a flat rate of 22% for amounts up to $1 million. This is called the Percentage or Flat Method. It is the most common way employers handle bonus withholding. If your bonus is over $1 million, the amount above $1 million is withheld at 37%.

What is the difference between the flat method and the aggregate method?

The flat method takes a straight 22% out of your bonus for federal tax, no matter what you earn. The aggregate method adds your bonus to your regular paycheck and calculates tax on the combined amount using your income tax brackets. The aggregate method can result in more or less tax being withheld depending on your total income.

Will I get a refund if too much tax was withheld from my bonus?

Yes. Bonus withholding is just an estimate. When you file your tax return, your bonus is added to your total income and taxed at your actual rate. If the 22% flat withholding was more than your real tax rate, you will get the extra money back as a refund.

Is my bonus taxed at a higher rate than my regular pay?

Not necessarily. Your bonus is withheld at a different rate, but it is not taxed at a separate rate. When you file your return, your bonus is combined with all your other income and taxed at your normal marginal rates. The withholding may feel higher, but your actual tax owed could be lower.

Do I pay Social Security tax on my bonus?

Yes, your bonus is subject to the 6.2% Social Security tax, but only up to the annual wage base limit. In 2025, the limit is $176,100. If your year-to-date wages already exceed that cap, no Social Security tax is taken from your bonus. Enter your YTD Social Security wages in the calculator to get an accurate result.

What is the Additional Medicare Tax on bonuses?

If your total wages for the year go above $200,000 (Single) or $250,000 (Married Filing Jointly), an extra 0.9% Additional Medicare Tax applies to the amount over that threshold. This is on top of the regular 1.45% Medicare tax. The calculator accounts for this based on your YTD Medicare wages and filing status.

Which states have no income tax on bonuses?

These states have no state income tax, so no state tax is taken from your bonus: Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. You can select any of these in the calculator and your state tax will be $0.

How do I know which withholding method my employer uses?

Most employers use the flat 22% method because it is simpler. Your employer picks the method, not you. Check your pay stub or ask your payroll department if you are not sure. You can use this calculator to compare results from both methods.

What should I enter for YTD Social Security Wages?

Enter the total wages that have been subject to Social Security tax so far this year, before this bonus is added. You can find this amount on your most recent pay stub, usually labeled as "Social Security Wages" or "SS Wages YTD." This helps the calculator determine if your bonus will push you past the wage base cap.

Can I use this calculator for a signing bonus or commission?

Yes. The IRS treats signing bonuses, performance bonuses, commissions, and other supplemental wages the same way for withholding purposes. Enter the amount in the Bonus Amount field and the calculator will apply the correct federal, state, and FICA rates.

What does the effective tax rate mean?

The effective tax rate is the total percentage of your bonus that goes to taxes. It is calculated by dividing total taxes withheld by your gross bonus amount. For example, if $2,655 is withheld from a $10,000 bonus, your effective tax rate is 26.55%.

What is the local tax field for?

Some cities and counties charge their own income tax on top of federal and state taxes. For example, New York City has a city income tax. If you live in a place with a local tax, enter the rate as a percentage in this field. If you do not have a local tax, leave it at 0%.

Does pay frequency affect how much tax I owe on my bonus?

Pay frequency only matters if you use the aggregate method. That method annualizes your combined regular pay and bonus based on how many pay periods you have per year. If you use the flat method, pay frequency does not change your results.

How accurate is this bonus tax calculator?

This calculator gives you a close estimate based on current federal withholding rules, FICA rates, and state supplemental tax rates. It uses the official 2024 and 2025 tax brackets and wage base limits. However, your actual withholding may differ slightly based on your employer's payroll system, pre-tax deductions, and other factors specific to your situation.

What happens if my bonus pushes me into a higher tax bracket?

Only the income that falls into the higher bracket is taxed at the higher rate. Tax brackets are marginal, meaning each portion of your income is taxed at its own rate. Your entire income does not jump to the higher rate. If you use the flat method for withholding, your bracket does not affect the amount withheld from the bonus itself.

Why does the comparison table show different effective rates for different bonus amounts?

The effective rate changes because some taxes have caps and thresholds. For example, Social Security tax stops once you hit the wage base limit, and Additional Medicare Tax only kicks in above a certain income level. Larger bonuses may also trigger the 37% federal rate on amounts over $1 million. These factors cause the overall effective rate to shift at different bonus sizes.