How much does salary sacrifice save you?

The National Insurance saving is 8% of the amount you sacrifice if your earnings sit in the main band, or 2% if you are a higher earner above £50,270. So sacrificing £2,000 saves a basic-rate earner about £160 a year in NI, on top of income tax relief.

Workplace Pensions

Salary Sacrifice Pensions Explained

Q: Is salary sacrifice worth it for pensions?

For most employees, yes. Salary sacrifice gives you the same income tax relief as a normal pension contribution plus a National Insurance saving on top, worth 8% for most basic-rate earners. Many employers also add some of their own NI saving to your pension.

By Sam Parkinson · Last updated: July 2026 · 7 min read

Salary sacrifice is the most tax-efficient way most employees can pay into a pension, yet plenty of people who are offered it never switch it on. The idea sounds odd, give up part of your salary, but the result is the same money reaching your pension while you keep more of your take-home pay.

How it works

With normal pension contributions, money is taken from your pay and put into your pension. With salary sacrifice, which some employers call salary exchange or smart pension, you formally agree to a lower salary, and your employer pays the difference straight into your pension as an employer contribution.

Why bother with the paperwork? National Insurance. Your NI is worked out on your salary, so a lower salary means a smaller NI bill. Normal pension contributions don't reduce your NI, but sacrificed salary does. You get full income tax relief either way, and salary sacrifice adds an NI saving on top.

What the saving is worth

In 2026/27, employees pay 8% National Insurance on earnings between £12,570 and £50,270, and 2% above that (source: GOV.UK, rates and thresholds for employers 2026/27). So the saving depends on where your salary sits.

You sacrifice £2,000 a year	Earnings band	NI saved per year
Basic-rate earner (£35,000)	8% band	£160
Higher earner (£60,000)	2% band	£40

That's on top of the income tax relief every pension contribution gets. Your employer saves too: employer NI is 15% on pay above £5,000 in 2026/27, so your £2,000 sacrifice saves them £300. Many employers pass some or all of that saving into your pension as well, which is worth asking about, because it's free money on top of free money.

Take a basic-rate earner on £35,000 who wants £2,000 a year to go into their pension.

Through a normal contribution, £2,000 in the pension costs them £1,600 after income tax relief. Through salary sacrifice, the same £2,000 lands in the pension but they also keep the £160 of National Insurance they'd otherwise have paid. Same pot, more take-home. If their employer shares its £300 NI saving too, even more ends up invested.

A quieter benefit for higher earners

Because sacrificed salary never reaches you, you get your full tax relief automatically through payroll. There's no extra 20% or 25% to remember to claim from HMRC, which is where relief at source schemes catch higher-rate taxpayers out.

The catches

Salary sacrifice means your official salary really is lower, and a few things key off that number:

Borrowing. Mortgage lenders assess your reduced salary. If you're about to apply for a mortgage, time your sacrifice level carefully.
Statutory payments. Statutory maternity, paternity and sick pay are based on your actual, lower earnings.
Life cover and bonuses. Anything your employer calculates as a multiple of salary may shrink unless they use a notional pre-sacrifice figure. Ask how yours handles it.
The minimum wage floor. Your employer can't let sacrifice take your pay below the National Minimum Wage, so lower earners may be capped.

None of these are reasons to avoid salary sacrifice for most people, but they're worth checking before you sign the agreement.

See what the extra contributions become

An NI saving recycled into your pension compounds for decades. Put your numbers into the free calculator and see the difference at retirement.

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The £2,000 cap from April 2029

The Autumn 2025 Budget announced that from 6 April 2029, only the first £2,000 of salary sacrificed into a pension each year will stay exempt from National Insurance. Anything above £2,000 will attract employee and employer NI, though income tax relief is untouched (source: GOV.UK; confirmed by the Institute for Fiscal Studies and the House of Commons Library).

What this means in practice: sacrifice up to £2,000 a year and nothing changes for you, ever. Sacrifice more, and from April 2029 the excess loses its NI advantage but keeps full tax relief, so it simply becomes as good as a normal contribution rather than better. There's no scenario where contributing less is the right response to this change. If you sacrifice heavily, the sensible move is a fresh comparison of your options closer to 2029.

How to set it up

Ask your payroll or HR team whether they offer salary sacrifice for pensions. Many schemes have it available but not switched on by default.
Ask whether the employer passes on any of their 15% NI saving.
Check the catches above against your circumstances, especially if a mortgage application or parental leave is coming up.
You'll sign a variation to your employment contract, and you can usually change the amount at set points in the year or after life events.

Common questions

Is salary sacrifice worth it?

For most employees, yes. You get the same income tax relief as a normal contribution plus a National Insurance saving on top, worth 8% for most basic-rate earners. Many employers also add some of their own NI saving to your pension.

How much does it save?

The NI saving is 8% of the amount you sacrifice if your earnings sit in the main band, or 2% if you're a higher earner above £50,270. Sacrificing £2,000 saves a basic-rate earner about £160 a year in NI, on top of income tax relief.

What are the downsides?

Your official salary is lower, which can affect mortgage borrowing, statutory maternity, paternity and sick pay, and any life cover set as a multiple of salary. It also can't take your pay below the National Minimum Wage.

Is it changing in 2029?

Yes. From 6 April 2029, only the first £2,000 sacrificed into a pension each year stays exempt from National Insurance. Above that, the excess attracts NI but keeps full income tax relief.

Sources

National Insurance rates and thresholds 2026/27 (employee 8%/2%, employer 15% above £5,000): GOV.UK.
Salary sacrifice NI exemption capped at £2,000 from 6 April 2029: GOV.UK (Autumn 2025 Budget); Institute for Fiscal Studies; House of Commons Library.
Figures correct as of July 2026. The 2029 rules may be amended before they take effect.

Written by Sam Parkinson

Sam founded Pension Sprout to make UK pensions easier to understand. He researches every guide from primary sources like GOV.UK, the House of Commons Library and MoneyHelper, and writes in plain English. He is not a regulated financial adviser, and Pension Sprout gives information, not personal advice.

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This article is for general information only and does not constitute financial advice. Figures relate to the 2026/27 tax year and are correct as of July 2026; National Insurance rates and the April 2029 changes may be amended before they take effect. Tax treatment depends on your individual circumstances. For advice tailored to you, speak to a financial adviser regulated by the Financial Conduct Authority (FCA), or get free guidance from MoneyHelper.