Bonus calculator
Bonus before and after tax from salary, percentage and tax rate.
Fill in the fields and the result will appear here automatically.
A bonus expressed as a percentage of salary gives the amount before withholding: 35% of 145,000 is 50,750. The amount received also depends on the supplied withholding rate, so the tool displays both amounts and the deduction together. It calculates the bonus itself without adding the salary. The constant percentage is an input assumption; tax bands, allowances and mandatory contributions need a separate calculation.
How it works
Formula and logic
Bonus before withholding = salary × bonus percentage / 100. Withholding = bonus × the supplied rate / 100; the remainder is bonus minus withholding. The constant rate must be at least zero and below 100%; this model does not determine the tax you legally owe.
Example
A 35% bonus on a salary of 145,000 is 50,750 before tax and 44,152.50 after 13%.
Fields and units
- Base salary — $
- Bonus, % of salary — unitless
- Income tax rate, % — unitless
How to use
- — Enter the base salary the bonus is calculated from.
- — Enter the bonus as a percentage of that salary.
- — Enter the income tax rate that applies.
- — The bonus percentage can exceed 100%: it expresses the payment relative to salary, not a withholding rate.
Method and limitations
- Calculation method
- Formula and logic
- Limitation
- Only the bonus after one supplied withholding is shown. Tax bands, allowances, social contributions and country-specific rules are not calculated. The example’s 13% is an assumption, not a universal employee tax rate.
FAQ
Is a bonus taxed differently from salary?
This does not determine a tax regime: the remainder follows only the constant withholding percentage you enter. Only the bonus after one supplied withholding is shown. Tax bands, allowances, social contributions and country-specific rules are not calculated. The example’s 13% is an assumption, not a universal employee tax rate.
Should the percentage be taken from gross or net salary?
The entered salary is the base before the chosen withholding. A contract may define a different bonus base; check it first. Employer contributions and employee deductions are not calculated separately.
Why does my bonus differ from this figure?
Common reasons are social contributions on top of income tax, a bonus prorated for time worked, or a base that includes allowances the calculation here does not know about.
Can the bonus percentage exceed one hundred?
Yes, and for annual awards it often does — a thirteenth salary is a hundred per cent by definition. The calculation handles any non-negative percentage.