PaychecklySalary Sacrifice Explained
Salary sacrifice lets you swap part of your gross pay for a non-cash benefit — and pay less Income Tax and National Insurance in the process. Done right, it's the most tax-efficient perk most UK employers already offer.
What salary sacrifice actually means
Salary sacrifice is a formal agreement with your employer to reduce your contractual salary in exchange for a non-cash benefit of equivalent value — most commonly a pension contribution, an electric company car, or a cycle-to-work voucher.
Because your gross salary is lower, you pay less Income Tax and less National Insurance than you would have. Your employer also pays less Employer National Insurance — which is why most employers are happy to offer these schemes, and the good ones pass some of that saving back to you.
How the tax saving works — the maths
Every pound you sacrifice saves you tax at your marginal rate, plus National Insurance at 8% (or 2% above £50,270). Combine those and the real cost to your take-home is substantially less than the face value of the benefit.
| Your tax band | Income Tax saved | NI saved | Total saving per £1 sacrificed | Real cost to you |
|---|---|---|---|---|
| Basic rate (20%) | 20p | 8p | 28p | 72p |
| Higher rate (40%) | 40p | 2p | 42p | 58p |
| 60% trap (£100k–£125,140) | 60p* | 2p | 62p | 38p |
| Additional rate (45%) | 45p | 2p | 47p | 53p |
*The 60% figure includes the Personal Allowance taper. See our 60% Tax Trap guide for the full explanation.
Your employer also saves Employer NI (currently 15%) on the sacrificed amount. On a £5,000 pension sacrifice, that's £750 of employer NI saved. Many employers add some or all of this saving into your pension pot — always ask.
Pension salary sacrifice — the big one
Pension salary sacrifice is by far the most common and most valuable scheme. The mechanics are simple: instead of you paying into your pension from post-tax pay, your employer reduces your salary and pays the equivalent directly into your pension on your behalf.
A worked example — basic rate taxpayer
Sarah earns £45,000 and sacrifices £5,000 into her pension via salary sacrifice:
| Without sacrifice | With sacrifice | Difference | |
|---|---|---|---|
| Gross salary | £45,000 | £40,000 | −£5,000 |
| Income Tax | £6,486 | £5,486 | −£1,000 |
| National Insurance | £2,746 | £2,346 | −£400 |
| Take-home pay | £35,768 | £32,168 | −£3,600 |
| Pension contribution | £0 | £5,000 | +£5,000 |
Sarah gets £5,000 into her pension but it only costs her £3,600 of take-home pay. The government effectively contributes £1,400 via the tax and NI relief. And if her employer passes on their NI saving (£750), the total benefit rises further.
The 60% trap — where salary sacrifice becomes extraordinary
For anyone earning between £100,000 and £125,140, pension salary sacrifice doesn't just save 42% — it can save 60% or more of every pound contributed, because it reduces your adjusted net income and restores your Personal Allowance.
Read the full mechanics in our 60% Tax Trap guide.
Other salary sacrifice schemes worth knowing
Electric Company Car Scheme
You sacrifice salary to cover the cost of leasing an electric vehicle (EV) through your employer. The Benefit in Kind (BiK) tax on EVs is just 3% in 2026/27 — making this one of the cheapest ways to drive a new EV in the UK.
On a £600/month EV lease, a higher-rate taxpayer typically saves £200–£300 per month compared to buying the equivalent car personally. The total saving over a 3-year lease can exceed £8,000. This scheme is only worth running the numbers on for electric vehicles — petrol and diesel BiK rates are far higher and make it much less attractive.
Cycle to Work
You sacrifice salary to cover the cost of a bicycle and cycling equipment (up to £3,000 for standard bikes, unlimited for cargo bikes). The saving is your marginal tax rate plus NI on the full value — typically 28–42% off the retail price.
At the end of the hire period (usually 12–18 months) you can purchase the bike at a nominal fair market value. Practically, this means a £1,000 bike costs a basic-rate taxpayer around £720, or a higher-rate taxpayer around £580.
Tax-Free Childcare
This isn't technically salary sacrifice, but works alongside it. The government tops up a dedicated childcare account by 25% (up to £500 every 3 months, £2,000/year per child). It's free to set up via the government gateway.
Important: Tax-Free Childcare cuts off completely if either parent earns over £100,000 of adjusted net income. A pension salary sacrifice can pull your income below £100,000 and restore eligibility — worth up to £2,000 per child per year on top of the pension saving.
Tech Schemes
Similar to cycle to work — some employers run schemes for laptops, phones, and home office equipment. Less common than the above, but the tax saving is the same. Worth asking HR if your employer offers one.
The catches — what salary sacrifice affects
- Statutory pay: Maternity pay, paternity pay, and statutory sick pay are based on your contracted salary. If you sacrifice heavily and then need to claim, your statutory entitlement is lower.
- State pension: The state pension is based on National Insurance contributions, which are linked to your earnings. If your salary falls below the Lower Earnings Limit (£6,396 in 2026/27), you stop accruing state pension credits. For most people earning well above this threshold, this isn't a risk — but worth knowing.
- Life insurance & income protection: Many employer schemes multiply your salary by a fixed factor (e.g. 4× salary). A lower contracted salary means lower cover. Check your policy before sacrificing a large amount.
- Annual Allowance: All pension contributions — employer and employee — count toward the £60,000 Annual Allowance. If your employer matches generously, check you're not approaching the limit before sacrificing further.
How to set it up
Salary sacrifice is an employer scheme — you can't set it up yourself. Here's how to get started:
- Check your employer offers it. Ask HR or your payroll team. Most employers with 50+ employees will have a pension salary sacrifice arrangement. Smaller employers sometimes don't — in which case you can still make personal pension contributions, which get basic-rate tax relief added automatically.
- Agree an amount. Decide what to sacrifice. The calculator below can help you see how different contribution levels change your take-home.
- Sign a variation to your employment contract. Your employer will issue a letter or form confirming the new salary and the benefit being provided. Keep this document.
- Check your payslip. After the first month, verify that the sacrifice is showing correctly — your gross pay should be lower and the pension contribution should appear.
Is salary sacrifice always worth it?
For pension contributions, almost always yes — assuming you won't need the cash for a mortgage application in the next 6 months. The tax relief is immediate and guaranteed; pension growth is on top of that.
For other schemes (EV, cycle), run the numbers for your specific situation. The EV scheme is excellent value for higher-rate taxpayers who would have a company car anyway. Cycle to work is worth doing if you'll actually use the bike — the saving is real but so is the commitment.
Calculate my take-home with pension contributions ›General information about UK tax rules for the 2026/27 tax year, not personal financial advice. Salary sacrifice arrangements vary by employer. The mortgage and state benefit implications in particular depend on your individual circumstances. For significant decisions involving salary sacrifice, please consult a qualified financial adviser or your HR department.