Bonus Tax Calculator: Estimate Withholding on Supplemental Wages

See how much of your bonus you keep with our bonus tax calculator. Calculate federal and state withholding using the percentage or aggregate method now.

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Bonus Tax Calculator: Estimate Withholding on Supplemental Wages

Enter your details below to calculate

Bonus Tax Calculator

Calculate federal tax withholding on your bonus payment

100% Private
IRS Compliant

How to Use Bonus Tax Calculator

1

Enter Your Data

Input your financial information, amounts, rates, and terms in the calculator fields

2

Adjust Parameters

Fine-tune options like compounding frequency, payment schedules, or additional contributions

3

Calculate Results

Click Calculate to instantly see your results with detailed breakdowns and charts

4

Analyze & Compare

Review the results, try different scenarios, and use insights for financial planning

Key Features

Fast bonus tax calculator calculations

Clear inputs and results

Mobile-friendly, privacy-first

Free to use, no signup

Complete Guide: Bonus Tax Calculator: Estimate Withholding on Supplemental Wages

Written by Marko ŠinkoSeptember 11, 2025
Illustration showing the bonus tax calculator applying the federal flat rate (percentage method) or aggregate method to determine tax withholding clearly.

See how much of your bonus you keep with our bonus tax calculator. Calculate federal and state withholding using the percentage or aggregate method now.

Our bonus tax calculator: estimate withholding on supplemental wages provides accurate, instant results based on established formulas.

What this calculator does

The tool focuses on quick inputs and clear outputs with transparent assumptions.

How to interpret results

Read your result alongside ranges in the Understanding section above.

About the Author

Marko Hrvojević

Finance Expert, CPA with 12+ years in financial analysis and tax planning

Connect with Marko

Frequently Asked Questions

How accurate are these calculator results?

Our calculators use industry-standard financial formulas and are regularly verified against professional accounting software. Results are highly accurate based on the information you provide.

Is my financial data stored or shared?

No. All calculations happen locally in your browser. We never store, track, or share any of your personal financial information. Your privacy is 100% protected.

Can I use these calculators for business purposes?

Yes! Our calculators are suitable for both personal and business financial planning. Many small business owners and financial professionals use them daily.

How often are rates and formulas updated?

We regularly update our calculators to reflect current tax laws, interest rates, and financial regulations. Check the last updated date on each calculator page.

What makes these calculators different from others online?

We focus on user experience, accuracy, and privacy. No ads cluttering the interface, no required sign-ups, and mobile-first design ensures they work perfectly on any device.

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