Bonus Tax Calculator

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Estimate bonus withholding and net bonus pay.

100% Free
No signup
Private & secure
Instant results

On your device

Private on your device

Your information stays on your device and is not uploaded.

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Compare separate supplemental, aggregate, and gross-up bonus tax estimates, including a withholding-versus-annual-liability note.

How to use this tool

Enter the bonus, regular paycheck amount when combining wages, state, and year-to-date wages. Use gross-up when an employer promises a specific net bonus.

Worked example

A $10,000 separately paid bonus can have 22% federal supplemental withholding plus FICA and estimated state withholding, which may differ from final annual tax liability.

How it works

Compare separate supplemental withholding, combined aggregate withholding, or a gross-up calculation for a bonus. The results also estimate the bonus's incremental annual tax liability.

Limitations

Results are based on the inputs you provide and may not cover every edge case. This tool is for general use and is not professional advice.

Privacy and file handling

Your data stays on your device and is not uploaded.

FAQ

Frequently asked questions

Is Bonus Tax Calculator free?

Yes. It is free to use and you do not need to sign in or create an account.

Is my data private?

See the privacy note on this page. Many tools run on your device; some heavier file tools may use secure temporary processing when required.

Can I use Bonus Tax Calculator on mobile?

Yes. Open this page on your phone or tablet, enter your inputs, and use the on-screen controls.

Page last reviewed: March 1, 2026