PAY & TAX
Bonus Take Home Calculator
Estimate how much of a bonus you keep in the 2026/27 tax year. See both an annual estimate and a payslip-style estimate for Income Tax, National Insurance, student loans and pension deductions.
Bonus Take Home Calculator – FAQs
How does this bonus calculator work?
The calculator compares your estimated pay before and after a bonus. It then isolates the extra deductions triggered by the bonus, including Income Tax, National Insurance, student loan repayments and pension deductions.
What is the difference between annual mode and payslip mode?
Annual mode estimates how much of the bonus you keep over the full tax year. Payslip mode estimates what the bonus looks like when processed through one payroll period, which can feel different from the annual view.
Why can a bonus look over-taxed on a payslip?
Payroll often calculates deductions per pay period, so a one-off bonus can push more pay into higher bands in that month or week. Over the full year, the effective position may be different.
Does the calculator include student loans and pension?
Yes. You can include undergraduate loan plans, postgraduate loan deductions, pension contribution type, whether the bonus is pensionable and whether it is included in salary sacrifice.
Is the payslip result exact?
No. It is a simplified estimate designed for user-friendly planning. Employer payroll settings and specific tax code treatment can produce different results on a real payslip.