Published: June 2026 | Fact-Checked & Audited By: David Vance, CTA FCA (Chartered Tax Advisor & Accountant)
This guide is fully updated for the 2026/27 HMRC tax year. All calculations and tax rules have been audited against official UK legislation.
Receiving a bonus is an exciting milestone, representing a reward for hard work or business success. However, that excitement is often tempered by a sense of shock when you see your payslip and realize how much of that extra income has been eaten up by tax and National Insurance. In this guide, we demystify how bonuses are taxed, show you how to calculate your net bonus, and explain key tax planning strategies like “Bonus Sacrifice” to keep more of your money.
How is a Bonus Taxed in the UK?
HMRC does not treat a bonus as a special type of income; it is classified simply as earned income, just like your regular salary. However, because your regular salary has already utilized your tax-free Personal Allowance (£12,570), a bonus is stacked on top of your normal salary and is taxed entirely at your highest marginal tax rate. For the 2026/27 tax year, this means:
- Basic Rate Earners (Up to £50,270): Pay 20% Income Tax and 8% National Insurance on their bonus, resulting in an effective tax rate of 28%.
- Higher Rate Earners (£50,271 to £125,140): Pay 40% Income Tax and 2% National Insurance on their bonus, resulting in an effective tax rate of 42%.
- Additional Rate Earners (Over £125,140): Pay 45% Income Tax and 2% National Insurance on their bonus, resulting in an effective tax rate of 47%.
Bonus Deductions Calculation Examples
Let’s look at two standard employee scenarios to see how a £5,000 bonus is taxed (assuming no student loan or pension deductions):
| Scenario | Base Salary | Bonus Amount | Income Tax (PAYE) | National Insurance (NI) | Net Take-Home Bonus |
|---|---|---|---|---|---|
| Basic Rate Taxpayer | £30,000 | £5,000 | £1,000 (20%) | £400 (8%) | £3,600 (72% Net) |
| Higher Rate Taxpayer | £60,000 | £5,000 | £2,000 (40%) | £100 (2%) | £2,900 (58% Net) |
Bonus Sacrifice: The Ultimate Tax-Saving Move
If you do not need the cash immediately, you can ask your employer to pay your bonus directly into your pension pot. This process is known as Bonus Sacrifice. Because the pension contribution is made pre-tax directly by your employer, you avoid paying Income Tax and National Insurance on the bonus. Additionally, because the employer does not have to pay their 15.0% Employer National Insurance on that bonus, many companies will pass all or part of their NI savings directly into your pension pot, boosting your contribution even further.
To run your own numbers and calculate deductions on your next bonus, use our Bonus Tax Calculator.
Frequently Asked Questions (FAQ)
Q: Why does my bonus payslip look so heavily taxed?
A: Because a bonus is paid on top of your normal salary, it does not benefit from any tax-free allowances. Every pound of the bonus is taxed at your highest marginal rate. Additionally, if the bonus is paid in a single month, your payroll software may assume you will earn that high amount every month of the year, pushing you temporarily into emergency tax rates (which are adjusted and refunded automatically in subsequent months).
Q: Can I put my entire bonus into a pension?
A: Yes, you can sacrifice your entire bonus into your pension, provided the total contributions (your salary sacrifice plus employer contributions) do not exceed your annual allowance (standard is £60,000 per tax year, though it can be lower for very high earners due to tapering). You must agree to the sacrifice *before* the bonus is paid.
Q: Does a bonus affect my student loan repayments?
A: Yes. Student loan repayments are calculated on a weekly or monthly basis. Because a bonus spikes your income for that specific pay period, you will pay 9% of the bonus portion above the weekly/monthly threshold. If you have Plan 1 or Plan 2 student loans, this will reduce your take-home cash further.
Q: What is the £100k tax trap for bonuses?
A: If your base salary is £95,000 and you receive a £10,000 bonus, your total adjusted net income becomes £105,000. This triggers the tapering of your Personal Allowance, meaning the £5,000 over £100,000 is subject to an effective tax rate of 60%, leaving you with far less than expected.
Q: Are cash bonuses taxed differently from vouchers or physical gifts?
A: Cash bonuses are processed through payroll and are subject to tax and NI immediately. Vouchers or non-cash perks (like electronics or holidays) are classified as Benefits in Kind (BIK). While you won’t see NI deducted on your payslip for non-cash gifts, they must be reported to HMRC via a P11D form, which will lower your tax code for the following year.