What Is Salary Sacrifice?
Salary sacrifice (also called salary exchange) is an arrangement between you and your employer where you agree to give up part of your gross salary in exchange for a non-cash benefit. Because you're reducing your gross pay, you pay less income tax and National Insurance — making it a tax-efficient way to receive certain benefits.
💷 Key benefit: With salary sacrifice, both you and your employer save National Insurance. Some employers pass on their NI savings to boost your pension pot further.
How Salary Sacrifice Saves Tax
Here's a concrete example for a Basic Rate taxpayer on £40,000 who salary-sacrifices £2,000/year into their pension:
| Without Sacrifice | Amount | With Sacrifice | Amount |
|---|---|---|---|
| Gross Salary | £40,000 | Gross Salary | £38,000 |
| Income Tax | £5,486 | Income Tax | £5,086 |
| National Insurance | £2,234 | National Insurance | £2,074 |
| Take-Home Pay | £32,280 | Take-Home Pay | £30,840 |
| Pension Contribution | £0 (from you) | Pension Contribution | £2,000 |
The net cost of the £2,000 pension contribution is only £1,440 — a saving of £560 (income tax + NI) compared to contributing from take-home pay.
Types of Salary Sacrifice Schemes
- Pension – the most common. Reduces income tax and NI. Particularly valuable for higher earners and those near £50,270 or £100,000 thresholds
- Electric Vehicle (EV) Salary Sacrifice – lease an electric car via your employer with huge tax savings. Zero-emission vehicles have a benefit-in-kind rate of just 3% in 2026/26
- Cycle to Work Scheme – get a bike and equipment tax-free up to £1,000 (or more with some employers)
- Childcare (Employer-Supported) – childcare vouchers are no longer available to new entrants but some employees still benefit from older schemes
- Technology schemes – laptops, phones etc. through employer schemes
- Holiday trading – some employers allow buying/selling holiday in exchange for salary adjustment
Salary Sacrifice and Your Pension
Using salary sacrifice for pension is the most powerful tax planning tool for most UK employees. Compared to a regular pension contribution:
- You save income tax and National Insurance on the sacrificed amount
- Your employer saves their 15% National Insurance — many pass this on
- Your "take-home pay" is reduced, but by less than the pension contribution amount
Salary Sacrifice and the £100,000 Trap
If you earn between £100,000 and £125,140, salary sacrifice into a pension is exceptionally valuable. Your personal allowance is withdrawn at £1 for every £2 over £100,000, creating an effective 60% marginal tax rate. Reducing your income below £100,000 via salary sacrifice restores your personal allowance.
See Your Take-Home Pay
Adjust your pension percentage to see the impact of salary sacrifice.
💷 UK Salary Calculator