How Salary Sacrifice Pension Saves You Tax in 2025-26
Salary sacrifice pension — also called salary exchange — is a pension contribution method where your employer reduces your gross salary and pays the equivalent directly into your pension. The result: you pay income tax and National Insurance on a lower salary, generating an immediate saving compared to standard pension contributions.
How salary sacrifice differs from standard pension contributions
With a standard personal contribution, you pay tax on your full salary and then contribute from your net pay. With salary sacrifice, your gross salary is reduced first — you pay tax and NI on the lower amount. HMRC treats the sacrifice as a contractual pay reduction, so it reduces your assessable income rather than generating a tax credit.
The National Insurance saving
The most significant advantage over a standard contribution is the NI saving. Standard pension contributions do not reduce NI. Salary sacrifice does — because your NI is calculated on your lower sacrificed salary. In 2025-26, employees pay 8% NI on earnings between £12,570 and £50,270. For every £1,000 sacrificed in this range, you save £80 in NI.
Examples at key salary levels
| Salary | 5% sacrifice amount | Income tax saving | Employee NI saving | Total annual saving |
|---|---|---|---|---|
| £30,000 | £1,500 | £300 | £120 | £420 |
| £50,000 | £2,500 | £500 | £200 | £700 |
| £80,000 | £4,000 | £1,600 (40%) | £80 (2% above £50,270) | £1,680 |
Employer NI saving — and why it sometimes gets passed on
Employers also save NI on the sacrificed amount (13.8% above £9,100). Some employers pass this saving on to employees as an enhanced pension contribution. If your employer offers this, your effective pension contribution is higher than the nominal sacrifice amount — making the arrangement even more valuable.
Considerations before using salary sacrifice
- Mortgage applications: Lenders assess affordability based on your contractual salary. A large salary sacrifice can reduce the amount you can borrow. Discuss with your lender before committing.
- State benefits: Some benefits (e.g. statutory maternity pay, contribution-based JSA) are calculated on earnings. Reducing your gross salary could reduce these entitlements.
- Annual allowance: Pension contributions (including employer match) are subject to the annual allowance of £60,000 in 2025-26. High earners using salary sacrifice should monitor this.
Frequently asked questions
Can I use salary sacrifice for anything other than pensions?
Yes. Salary sacrifice is also used for cycle-to-work schemes, electric cars, and childcare vouchers (legacy scheme). Each has its own rules and tax treatment.
Does salary sacrifice affect my pension pot?
No. The same amount goes into your pension — it simply comes from your employer directly rather than from your net pay, and the route generates a tax and NI saving.