Bonus Tax Calculator

See how much of your bonus you'll actually take home after tax, National Insurance, and other deductions.

£

Your annual salary before the bonus

£

The gross bonus you'll receive

%

Percentage of your base salary

Check your payslip or ask your employer

Scotland has different income tax bands

Your Bonus Take-Home
£300
Gross Bonus
£417
You Keep
72.0%
Marginal Rate
28.0%

Tax on Your Bonus

Income Tax−£83
National Insurance−£33

Before vs After Bonus

Take-Home Pay
£2,277→£2,577+£300
Income Tax
£345→£428+£83
National Insurance
£150→£183+£33
With Bonus — Gross Pay£3,188
Take-Home Pay£2,577

Bonus tax calculator: how much you keep

A bonus is added to your pay and taxed at your marginal rate, not a special "bonus tax rate". Your salary has usually used up the Personal Allowance and lower tax bands, so you often keep less than you expect. This calculator uses HMRC 2026/27 rates for England, Wales, Northern Ireland and Scotland.

What you keep, by tax band

  • Basic rate (up to £50,270): keep 72% (20% tax + 8% NI).
  • Higher rate (£50,271–£100,000): keep 58% (40% tax + 2% NI).
  • 60% tax trap (£100,001–£125,140): keep 38%, because the Personal Allowance taper pushes the rate to 60% tax + 2% NI.
  • Additional rate (£125,141+): keep 53% (45% tax + 2% NI).

Bonus after tax by amount

Bonus you keep after tax and National Insurance by bonus size and salary, 2026/27
Gross bonusOn £30,000On £50,000On £70,000On £100,000
£1,000£720£618£580£380
£2,500£1,800£1,488£1,450£950
£5,000£3,600£2,938£2,900£1,900
£10,000£7,200£5,838£5,800£3,800
£15,000£10,800£8,738£8,700£5,700
£20,000£14,400£11,638£11,600£7,600
£25,000£17,338£14,538£14,500£9,500

England, Wales and Northern Ireland, no pension or student loan. Bonuses that cross a band are taxed partly at each rate.

Reduce the tax on your bonus

If your employer offers salary sacrifice, you can ask for some or all of your bonus to go into your pension. That avoids Income Tax and National Insurance on the amount sacrificed, which matters most if the bonus would land in the 60% trap.

New job or signing bonus?

Without your P45 your employer may use an emergency tax code (such as "1257L W1"), which can over-tax your first payments. HMRC usually corrects it within about 35 days, and any overpayment can be claimed back.

Updated for tax year 2026/27 · Using HMRC published rates · Last verified June 2026