How much of a £15,000 bonus you keep depends on your normal salary and deductions. Enter your salary below; the reference examples show why there is no universal net bonus.
2026/27 · England / Wales / NI · 1257L · monthly payroll · no pension, salary sacrifice, loans or benefits. Bonus paid once; not pensionable by default. Change the assumptions below.
| Normal salary | Net bonus, England / Wales / NI | Additional Income Tax | Additional employee NI | Net bonus, Scotland |
|---|---|---|---|---|
| £30,000 | £11,598.66 | £3,000.00 | £401.34 | £11,167.68 |
| £60,000 | £8,700.00 | £6,000.00 | £300.00 | £8,400.00 |
| £100,000 | £5,700.00 | £9,000.00 | £300.00 | £4,575.00 |
| £150,000 | £7,950.00 | £6,750.00 | £300.00 | £7,500.00 |
£30,000 salary: The bonus does not add a new Income Tax band in this scenario. Its incremental deduction rate still includes other deductions and any allowance change.
£60,000 salary: The bonus does not add a new Income Tax band in this scenario. Its incremental deduction rate still includes other deductions and any allowance change.
£100,000 salary: The bonus reduces the statutory Personal Allowance by £7,500, as adjusted net income moves into the 2026/27 taper above £100,000. The bonus does not add a new Income Tax band in this scenario. Its incremental deduction rate still includes other deductions and any allowance change.
£150,000 salary: The bonus does not add a new Income Tax band in this scenario. Its incremental deduction rate still includes other deductions and any allowance change.
We calculate normal salary, then the same salary plus a one-off bonus using the main tax engine. The difference in take-home is the estimated net bonus. Cash bonuses are employment earnings, not subject to a separate bonus tax rate. GOV.UK bonus guidance.
Income Tax uses an annual estimate. NI and payroll loan deductions assign the bonus to one pay period at your selected payroll frequency. PAYE timing, previous pay, cumulative codes, loan refunds and employer rounding can change a payslip. The monthly equivalent is an annual average, not a recurring bonus.
Bonuses are excluded from pensionable pay by default, matching the main calculator. You can include a percentage pension or enter a separate pension salary sacrifice from the bonus. Net-pay and relief-at-source contributions do not reduce employee NI-able pay. Extra relief at source may require an HMRC claim; the optional claim estimate is only supported for standard codes. Pension tax relief.
This is educational, not personalised financial advice. Pension annual allowances, carry forward, minimum wage restrictions, employer NI sharing, loan balances/refunds and other Self Assessment income are not assessed. Benefit values and fixed deductions remain unchanged in both scenarios. Non-standard codes are PAYE estimates; statutory allowance information is separate. Historical blended-NI years are estimates. Salary sacrifice rules · Pension limits.
Full calculation methodology · Find a salary for your take-home target · Salary sacrifice & Personal Allowance
Comparing a permanent pay rise instead? See the monthly take-home change.