2025 Federal Bonus Tax Percent Calculator

This federal bonus tax calculator uses supplemental tax rates to calculate withholding on special wage payments such as bonuses. If your state does not have a special supplemental rate, you will be forwarded to the aggregate bonus calculator. This is state-by state compliant for those states who allow the aggregate method or percent method of bonus calculations.

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How to Use PaycheckCity’s Flat Bonus Calculator

Our flat bonus calculator helps you understand the tax implications of receiving a bonus. Follow these steps to accurately calculate your bonus after taxes.

What You’ll Need

  • Your bonus amount
  • State of employment
  • Pay date
  • Information about your regular salary (for aggregate method)

Step-by-Step Instructions

1. Select Your State

Choose your state from the dropdown menu. This ensures that state-specific bonus tax rates are applied. If you only want to calculate federal taxes, select the “Federal” option.

2. Enter the Check Date

Input the date when you’ll receive the bonus. This is crucial because tax rates can change, and the calculator will use the most current rates for your selected date.

3. Choose the Calculation Method

Select between two bonus tax calculation methods:

  • Percentage Method: A flat rate (usually 22% for federal taxes) is applied to your bonus.
  • Aggregate Method: Your bonus is added to your regular pay to determine the tax rate.

4. Enter Your Bonus Amount

Input the gross amount of your bonus in the designated field.

5. Provide Regular Salary Information (for Aggregate Method)

If you chose the Aggregate Method:

  • Enter your regular salary amount
  • Specify your pay frequency (e.g., weekly, bi-weekly, monthly)

6. Add Any Additional Withholdings

If you have any additional withholdings that apply to your bonus, enter them in the appropriate fields.

7. Review W-4 Information

Ensure your W-4 information is correctly entered:

  • Select your filing status
  • Enter the number of dependents, if applicable
  • Add any additional withholding amounts

8. Calculate Your Bonus

Click the “Calculate” button to see your results.

9. Analyze Your Results

Review the detailed breakdown of your bonus, including:

  • Gross Bonus Amount
  • Federal Withholding
  • State Withholding (if applicable)
  • FICA taxes (Social Security and Medicare)
  • Net (take-home) Bonus Amount

Tips for Accurate Calculations

  • Confirm the correct bonus amount with your employer
  • Ensure you’ve selected the correct state
  • Double-check your regular salary information if using the Aggregate Method
  • Consider consulting with a tax professional for large bonuses

Understanding Bonus Taxation

  • Bonuses are considered “supplemental wages” by the IRS
  • The Percentage Method is more commonly used for bonuses under $1 million
  • For bonuses over $1 million, a mandatory 37% federal withholding rate applies to the amount over $1 million

Need help? Contact our support team for assistance with your bonus calculations.

How Your Paycheck Works

What’s a bonus paycheck calculator?

A bonus calculator lets you enter a bonus earnings amount and calculate how much the bonus will be taxed. There are specific calculations that federal and state jurisdictions impose on bonuses and other supplemental earnings.

Are bonuses taxed differently than regular pay?

Yes. Bonuses are taxed more than regular pay because they are considered supplemental income. They are always federally taxed, no matter which tax bracket you’re in.

Bonuses are taxed either by using the percentage method or the aggregate method. PaycheckCity has both percentage and aggregate bonus free calculators.

What is the percentage method for bonuses?

The percentage method is used if your bonus comes in a separate check from your regular paycheck. Your employer withholds a flat 22% (or 37% if over $1 million). This percentage method is also used for other supplemental income such as severance pay, commissions, overtime, etc. Supplemental wages are still taxed Social Security, Medicare, and FUTA taxes.

What is the aggregate method for bonuses?

The aggregate method is used if your bonus is on the same check as your regular paycheck. Your employer will withhold tax from your bonus plus your regular earnings according to your W-4 answers. Your bonus will be taxed the same as your regular pay, including income taxes, Medicare, and Social Security.

Will my bonus be taxed even if I claim exempt in my W4?

Yes, the flat 37% rate applies even if an employee claims exemption in their federal Form W-4 from federal income tax withholding.

Are bonuses taxed by states?

Yes, some states will tax bonus income or supplemental income. Select a state for the calculator to give you the most accurate results.

State Bonus Tax Percents

Select your state from the list below to see its bonus tax percent.

  1. Alabama
  2. Alaska
  3. Arizona (aggregate only)
  4. Arkansas
  5. California
  6. Colorado
  7. Connecticut (aggregate only)
  8. Delaware (aggregate only)
  9. Florida
  10. Georgia
  11. Hawaii (aggregate only)
  12. Idaho
  13. Illinois
  14. Indiana
  15. Iowa
  16. Kansas
  17. Kentucky (aggregate only)
  18. Louisiana (aggregate only)
  19. Maine
  20. Maryland
  21. Massachusetts (aggregate only)
  22. Michigan
  23. Minnesota
  24. Mississippi (aggregate only)
  25. Missouri
  26. Montana
  27. Nebraska
  28. Nevada
  29. New Hampshire
  30. New Jersey (aggregate only)
  31. New Mexico
  32. New York
  33. North Carolina
  34. North Dakota
  35. Ohio
  36. Oklahoma
  37. Oregon
  38. Pennsylvania
  39. Rhode Island
  40. South Carolina
  41. South Dakota
  42. Tennessee
  43. Texas
  44. Utah (aggregate only)
  45. Vermont
  46. Virginia
  47. Washington
  48. Washington DC (aggregate only)
  49. West Virginia
  50. Wisconsin
  51. Wyoming (aggregate only)
  52. American Samoa
  53. Guam
  54. Northern Mariana Islands
  55. Puerto Rico (aggregate only)
  56. US Virgin Islands
The calculators on this website are provided by Symmetry Software and are designed to provide general guidance and estimates. These calculators should not be relied upon for accuracy, such as to calculate exact taxes, payroll or other financial data. Neither these calculators nor the providers and affiliates thereof are providing tax or legal advice. You should refer to a professional adviser or accountant regarding any specific requirements or concerns.

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