Pillar Guide · Updated June 2026
Salary Sacrifice Explained UK 2026/27: Pension, EV & More
Salary sacrifice is one of the most powerful — and most misunderstood — tools available to UK employees. By formally giving up part of your gross salary in exchange for a non-cash benefit, you cut both income tax and National Insurance, and your employer saves employer NI too. This guide explains exactly how it works in 2026/27: the mechanics of a gross reduction, pension salary sacrifice (and the shared employer NI saving), the electric car scheme under the OpRA exemption, cycle to work, legacy childcare vouchers, the £100,000 60% tax trap, and the pitfalls — a lower notional salary that can hit your mortgage, statutory maternity pay and redundancy. Worked examples at £40k, £60k and £110k show the real numbers.
How Salary Sacrifice Works
Salary sacrifice is a contractual change: you agree to a lower gross salary, and in return your employer provides a non-cash benefit of equivalent value. The crucial point is that the reduction happens before the salary is earned, so HMRC never sees that money as your pay. You are taxed only on the reduced figure.
Because both income tax and National Insurance are charged on gross salary, lowering the gross figure cuts both. Your employer benefits too: it pays employer NI (15% above the secondary threshold in 2026/27) only on the reduced salary, saving 15% on everything you sacrifice. That shared saving is what makes salary sacrifice more efficient than paying for the same benefit out of your taxed take-home pay.
The arrangement must be genuine and prospective — you cannot retrospectively sacrifice pay you are already entitled to — and it cannot push your cash pay below the National Minimum Wage.
The Tax and National Insurance Savings
The size of the saving depends on your tax band. For every £1,000 sacrificed in 2026/27:
| Band | Income tax saved | Employee NI saved | Net cost of £1,000 benefit |
|---|---|---|---|
| Basic rate | £200 (20%) | £80 (8%) | £720 |
| Higher rate | £400 (40%) | £20 (2%) | £580 |
| £100k–£125,140 band | £600 (≈60% effective) | £20 (2%) | ≈£380 |
On top of this, the employer saves 15% employer NI, and many add some or all of it to your pension. Model your own figures with the salary sacrifice calculator and the take-home pay calculator.
Pension Salary Sacrifice
Pension is by far the most common use of salary sacrifice — and the most efficient way for most employees to fund a pension. An ordinary personal contribution saves income tax but not National Insurance; salary sacrifice saves both, because the money is never your salary.
The standout feature is the employer NI saving. Because the employer no longer pays 15% NI on the sacrificed amount, many employers share that saving by adding it to your pension. A £1,000 sacrifice can therefore land £1,150 in your pension — more than you gave up — at no net cost to the employer. Even where the employer keeps the saving, salary sacrifice still beats a net-pay or relief-at-source contribution for the employee.
The £60,000 annual allowance (with three years of carry-forward) still caps total contributions, and very high earners may face a tapered allowance.
The Electric Car (EV) Scheme
Electric cars are a rare bright spot in the otherwise restrictive salary-sacrifice rules. Under the “optional remuneration arrangements” (OpRA) anti-avoidance rules, most sacrificed benefits are taxed on the higher of the salary given up or the benefit value — which usually removes the tax advantage. Ultra-low-emission vehicles are specifically exempt from OpRA.
That means you sacrifice gross salary to fund an EV lease — saving income tax and NI on the full amount — and pay benefit-in-kind tax only on the very low BIK value (4% of list price in 2026/27, rising 1% a year). For a higher-rate taxpayer, an EV through salary sacrifice can cost far less than leasing the same car from taxed take-home pay.
Estimate the saving with the electric car savings calculator and read the electric car savings guide for the detail.
Cycle to Work
The Cycle to Work scheme lets you sacrifice salary to hire a bike and safety equipment, again saving income tax and NI on the cost. There is no longer a £1,000 cap (it was removed in 2019), so even e-bikes are covered, subject to your employer's scheme limits.
At the end of the hire period you usually buy the bike for a small market-value payment. The scheme is most worthwhile for higher-rate taxpayers and where you would have bought a bike anyway. See the cycle to work scheme guide for how the end-of-scheme valuation works.
Childcare Vouchers (Legacy Only)
Childcare voucher salary sacrifice closed to new joiners in October 2018, replaced by Tax-Free Childcare. If you were in an employer scheme before that date and have stayed in it continuously, you may still sacrifice salary for vouchers under the legacy rules.
Anyone starting now uses Tax-Free Childcare instead, where the government adds 20% to a childcare account — but this is not salary sacrifice. For some basic-rate families with high childcare costs the legacy vouchers can still be better, so compare carefully before leaving a legacy scheme.
The £100k Trap and the 60% Band
Between £100,000 and £125,140 of adjusted net income, your £12,570 Personal Allowance is withdrawn at £1 for every £2 earned. Combined with 40% tax on the same income, this creates an effective marginal rate of around 60%on that band — the notorious “£100k trap”.
Pension salary sacrifice is the cleanest escape. Because it reduces adjusted net income pound-for-pound, sacrificing enough to bring income back to £100,000 reinstates the full Personal Allowance and removes the 60% rate. The effective relief on money sacrificed in this band can exceed 60% once NI and the reinstated allowance are counted — making it one of the highest-return financial moves available to anyone caught in this zone.
Impact on Mortgage, SMP and Redundancy
The trade-off for these savings is a lower notional salary — the contractual figure on your payslip and P60. This matters in three places:
- Mortgages: some lenders assess affordability on the reduced salary, which can shrink how much you can borrow. Many add pension sacrifice back, but policies vary — check before applying.
- Statutory Maternity Pay (and SSP): SMP and Statutory Sick Pay are based on your reduced earnings, so heavy sacrifice can lower them. On the plus side, employers must usually continue pension contributions during paid maternity leave.
- Redundancy pay: statutory redundancy is calculated on your post-sacrifice weekly pay, so a large sacrifice can reduce a redundancy payout.
If you are planning a house purchase, a family or facing possible redundancy, model the effect before committing to a big sacrifice.
Pitfalls to Watch
- National Minimum Wage: you cannot sacrifice below the legal minimum for your hours.
- Lower notional salary: affects mortgage borrowing and statutory pay, as above.
- Early-exit charges: EV and cycle schemes can be costly to leave mid-term, including if you change jobs.
- Inflexibility: most employers only allow changes at set points or following a lifestyle event.
- Rule changes: EV benefit-in-kind rates are scheduled to rise gradually, slowly eroding the EV advantage.
Worked Examples
Three employees each sacrifice £5,000 of gross salary into their pension. The figures are illustrative for 2026/27 and assume the employer keeps its own NI saving:
| Salary | Tax + NI saved on £5,000 | Net cost of £5,000 in pension |
|---|---|---|
| £40,000 (basic rate) | ~£1,400 (20% + 8%) | ~£3,600 |
| £60,000 (higher rate) | ~£2,100 (40% + 2%) | ~£2,900 |
| £110,000 (£100k trap) | ~£3,100 (≈60% + 2%) | ~£1,900 |
The £110,000 earner gets the best deal by far: £5,000 lands in the pension for under £2,000 of lost take-home, because the sacrifice escapes the 60% band and reclaims part of the Personal Allowance. The principle scales: the higher your marginal rate, the greater the salary-sacrifice advantage. Run your own numbers with the salary sacrifice calculator.