Calculator
Bonus tax calculator
Estimate how much of a bonus remains after tax, National Insurance, and student loan deductions.
Leave this on no student loan if you do not repay a student loan through payroll.
Choose the single plan that applies to this estimate. Plan 5 is supported. Combined undergraduate and postgraduate deductions are not yet modelled in the calculators.
Bonus after tax
£2,900
Tax cost on bonus
£2,100
Base annual take-home
£42,457
Effective bonus tax rate
£2,100
42%
Take-home with bonus
£45,357
Monthly pay with bonus
£3,780
Income tax with bonus
£11,432
NI with bonus
£3,211
Student loan on bonus
£0
No student loan selected.
What this means
The bonus is taxed as part of your annual earnings, so what lands in your account can feel much smaller than the gross figure.
This estimate keeps about GBP 2,900 of the GBP 5,000 bonus.
The result excludes payroll timing quirks such as emergency-tax-style withholding on a specific payslip.
FAQ
Short answers to the questions that usually matter once you have the first result.
Is bonus tax different from salary tax?
In this annual model, no. The bonus is treated as additional taxable earnings in the same year.
Why can payroll withholding feel higher?
Real payslips can withhold differently during the year, even if the annual picture later settles closer to this estimate.
Key assumptions and limitations
This uses an annual model, so it is best for planning the end result rather than predicting a specific payslip deduction line. Real payroll withholding on a bonus can still look sharper during the year.
Next steps
Go deeper with one strong guide, one worked example, or one related calculator rather than juggling several weak next-step prompts.
Want to keep this result?
Keep it in your workspace if you want to compare it against another scenario, add notes on trade-offs, or come back before making a decision.
Related calculators
These calculators complement the one above. Use them to explore a different angle on the same pay decision.