Salary sacrifice is one of the most overlooked tools in UK personal finance. Used correctly, it can save thousands of pounds per year in tax and National Insurance — without reducing your lifestyle. This guide explains exactly how it works and which schemes are genuinely worth using.
What Is Salary Sacrifice?
Salary sacrifice (also called salary exchange) is an arrangement where you agree with your employer to receive a lower contractual salary in exchange for a non-cash benefit. Because the benefit is taken from pre-tax, pre-NI salary:
- You pay less income tax
- You pay less National Insurance
- Your employer also saves employer NI contributions (13.8% of the sacrificed amount)
The key point: unlike pension tax relief at source, salary sacrifice saves National Insurance as well as income tax. For a standard-rate taxpayer this is a meaningful difference. For a higher-rate taxpayer, the combined saving is substantial.
The Legal Structure
Salary sacrifice requires a formal variation to your employment contract. This isn’t just a personal election — your employer must agree to it and document the arrangement. Most major employers already have salary sacrifice schemes set up; you simply need to opt in.
What Can You Use Salary Sacrifice For?
| Scheme | Tax/NI saving | Typical limit | Notes |
|---|---|---|---|
| Pension contributions | Income tax + NI | Up to annual allowance (£60,000) | Largest potential saving |
| Electric vehicle (company car) | Income tax + NI | No specific limit (BIK applies) | Very low BIK rate for EVs currently |
| Cycle to Work | Income tax + NI | Up to £3,000 | Expanded limit for cargo/electric bikes |
| Additional employer-bought leave (selling holiday) | Income tax + NI | Up to 5 extra days typically | Uncomment with employer |
| Home working equipment | Income tax + NI | HMRC-approved items | Phones, laptops, broadband |
| Gym membership | Partial — see notes | Varies | Taxable if available to individuals, not groups |
HMRC has blocked salary sacrifice savings for some benefits since April 2017 (for arrangements entered after this date). The following no longer generate NI or income tax savings through salary sacrifice: company car (non-electric), private health insurance, mortgage subsidy, gym. Grandfathered arrangements from before 2017 may still apply but newer contracts don’t get the saving.
Pension, cycle to work, and EV car schemes remain fully effective.
Salary Sacrifice for Pensions: The Numbers
Pension salary sacrifice is the highest-value salary sacrifice scheme for most workers. Here’s a direct comparison:
Basic Rate Taxpayer (income under £50,270)
Scenario: Contributing £200/month to pension
| Method | Monthly cost to you | Monthly pension contribution |
|---|---|---|
| Personal contribution (relief at source) | £160 (after 20% basic rate relief) | £200 |
| Salary sacrifice | £136 (saves income tax + 8% NI) | £200 |
| Saving via salary sacrifice vs personal | £24/month = £288/year | Same contribution |
Higher Rate Taxpayer (income over £50,270)
Scenario: Contributing £500/month to pension
| Method | Monthly cost to you | Monthly pension contribution |
|---|---|---|
| Personal contribution (then claim relief) | £300 (after 40% relief) | £500 |
| Salary sacrifice | £290 (saves income tax + 2% NI) | £500 |
| Additional saving via salary sacrifice | £10/month = £120/year | Same |
For higher-rate taxpayers, the difference between methods is smaller because NI is only 2% above £50,270. But salary sacrifice is still marginally better and much simpler (no need to claim higher-rate relief via Self Assessment).
The Employer NI Bonus
Many employers pass some or all of their employer NI saving (13.8% of the sacrificed amount) back to the employee’s pension. This is a genuinely free addition:
- £500/month salary sacrifice → employer saves £69/month in NI
- If your employer matches this: your £500 sacrifice generates £69 of additional employer pension contribution at no additional cost to either party
Always ask your employer whether they pass on their NI saving. It’s not legally required but many large employers do.
Salary Sacrifice for Electric Vehicles: Currently Exceptional Value
Company car benefit-in-kind (BIK) tax for fully electric vehicles is just 3% in 2026/27, and the government has confirmed rates through 2029/30 (rising gradually: 4% in 2027/28, 5% in 2028/29, 7% in 2029/30).
This makes EV salary sacrifice schemes one of the most cost-effective ways to drive a new electric car.
How EV Car Salary Sacrifice Works
- Your employer leases an EV and provides it to you
- You sacrifice salary equal to the monthly lease cost
- You pay Benefit-in-Kind tax on the vehicle’s P11D value × 3% (BIK rate)
- Your employer may also cover insurance, maintenance, and charging in the package
Example: Tesla Model 3 via Salary Sacrifice
| Item | Amount |
|---|---|
| Monthly salary sacrifice | £550/month |
| Employee income tax + NI saving (basic rate) | ~£170/month |
| BIK tax owed (£47,500 P11D × 3% ÷ 12, basic rate taxpayer) | ~£24/month |
| Net effective monthly cost | £550 – £170 + £24 = £404/month |
| Equivalent personal lease (same car, no sacrifice) | ~£600–£650/month |
The saving is material — particularly because EV personal leases offer no tax benefit whatsoever.
Important check: Salary sacrifice for cars is reported as a benefit in kind and your P60 will show the reduced salary. If you’re applying for a mortgage, this matters — lenders use your contractual salary.
Cycle to Work Scheme
The cycle to work scheme lets you pay for a bicycle and safety equipment through salary sacrifice, up to £3,000 (the expanded limit introduced in 2019 covers electric bikes and cargo bikes).
- You save income tax and NI on the value of the bike package
- You “hire” the bike through the scheme for a set period (typically 12 months)
- At the end, you can purchase the bike at fair market value or sometimes for a nominal fee (scheme-dependent)
Example: £1,000 bike
- Basic rate taxpayer saves: 20% IT + 8% NI = 28% = £280
- Higher rate taxpayer saves: 40% IT + 2% NI = 42% = £420
What Salary Sacrifice Does NOT Reduce
Salary sacrifice reduces your contractual gross salary, which affects some calculations people don’t anticipate:
| Calculation | Effect of lower salary |
|---|---|
| Employer pension contributions (% of salary) | Lower base = less employer matching in £ terms |
| Death-in-service (life cover — typically 4x salary) | Lower payout if salary reduced significantly |
| Mortgage affordability | Lenders use contractual salary — lower figures reduce borrowing |
| Statutory Maternity Pay / Paternity Pay | Calculated on Average Weekly Earnings — sacrifice reduces this |
| Statutory Redundancy Pay | Calculated on weekly pay — sacrifice reduces this |
For pension, SMP, and redundancy, the impact of salary sacrifice on statutory calculations is by far the most important consideration.
How to Set Up Salary Sacrifice
- Check what schemes your employer offers — speak to HR or check the staff handbook or intranet
- Complete the opt-in — most employers have a form or portal
- Get the variation confirmed in writing — your contract should show the new (lower) salary
- Check your next payslip — confirm the figures are correct and the contribution is showing as employer contribution (not personal contribution)
If your employer doesn’t offer salary sacrifice for pensions, you can still make personal contributions — you’ll claim basic rate relief at source and higher/additional rate relief via Self Assessment. You just won’t save the NI component.
Is Salary Sacrifice Worth It?
For most people earning above £15,000: yes, for pensions. For those considering EVs or cycles to work: evaluate based on your specific numbers and driving/cycling needs.
The main reasons not to use salary sacrifice:
- You’re applying for a mortgage within 12 months and need maximum contractual salary
- Your salary after sacrifice would fall below the NI Lower Earnings Limit (£6,396/year) — you’d lose State Pension credits
- You receive Statutory Maternity Pay soon and want to maximise it (consider pausing sacrifice temporarily)
Related Guides
- Is Salary Sacrifice Worth It? — full worked examples for different earner profiles
- What to Do When You Get a Pay Rise — directing extra income efficiently
- Should I Max Out ISA or Pension First? — overall savings priority framework
- Maternity Pay Guide — SMP and how salary sacrifice can affect it