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Bonus Calculator

Calculate your bonus amount, estimate tax withholding, see total compensation breakdown with visual charts, and understand your take-home pay.

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What is a Bonus Calculator?

A bonus calculator helps you estimate the take-home amount of your bonus after all applicable taxes. Whether you receive a fixed signing bonus, a percentage-based annual bonus, or a performance-tied incentive, this tool calculates the gross amount, estimates federal and state tax withholding, Social Security and Medicare contributions, and shows you exactly what to expect in your paycheck.

How Bonuses Are Taxed

In the United States, bonuses are classified as supplemental wages and are subject to special tax withholding rules. The IRS allows employers to use one of two methods:

  • Percentage Method (Most Common): Employers withhold a flat 22% for federal taxes on bonuses up to $1 million per year. For amounts exceeding $1 million, the rate increases to 37%.
  • Aggregate Method: The bonus is combined with regular pay for the pay period, and taxes are calculated at your marginal tax rate, which may result in higher withholding.

In addition to federal income tax, bonuses are subject to Social Security (6.2% up to the annual wage base) and Medicare (1.45%, plus 0.9% additional for high earners above $200,000).

Types of Bonuses

  • Fixed Bonus: A predetermined dollar amount that does not vary with salary or performance (signing bonuses, referral bonuses, holiday bonuses)
  • Percentage-Based Bonus: Calculated as a percentage of your base salary, often tied to company or individual performance
  • Performance-Based Bonus: Compensation tied to predetermined goals, typically with a target percentage multiplied by a performance factor (125% for exceeds, 100% for meets, 50% for needs improvement)

How to Use This Calculator

Enter your annual base salary, select the bonus type, enter the bonus details, set your tax rates, and click calculate. The tool will show your gross bonus, tax breakdown, net take-home amount, effective tax rate, and compensation equivalents.

Understanding your bonus withholding is part of managing your overall compensation. Estimate your regular pay with the Take-Home Paycheck Calculator or see how your bonus affects your annual taxes with the Income Tax Calculator. Our Hourly Wage Calculator and Gross Pay Calculator help complete your compensation picture.

Frequently Asked Questions

How are bonuses taxed in the US?

Bonuses are taxed as supplemental wages. The IRS requires a flat 22% federal withholding rate for bonuses up to $1 million per year (37% for amounts above $1 million). Bonuses are also subject to Social Security (6.2%), Medicare (1.45%), and state income tax where applicable.

What is the difference between a fixed bonus and a percentage-based bonus?

A fixed bonus is a predetermined dollar amount that doesn't change with salary. A percentage-based bonus is calculated as a percentage of your base salary, automatically scaling with salary increases. Performance-based bonuses add a multiplier based on how well you meet goals.

How do I calculate my take-home bonus after taxes?

Start with your gross bonus amount, subtract federal tax withholding (typically 22%), state income tax, Social Security (6.2%), and Medicare (1.45%). The remaining amount is your net or take-home bonus.

What is the federal supplemental tax rate for bonuses?

The IRS sets the federal supplemental tax rate at 22% for bonuses up to $1 million per year. For supplemental wages exceeding $1 million, the rate increases to 37%. This flat rate applies when bonuses are paid separately from regular wages.

Can I reduce taxes on my bonus?

Increasing 401(k) contributions or HSA contributions can reduce your taxable income. If you expect to be in a lower tax bracket next year, you may ask your employer about deferring your bonus. Note that withholding is not the same as your actual tax liability.

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