Last verified: May 2026
Key takeaways
- Salary sacrifice typically cuts the effective monthly cost of a brand-new EV by 20–50%, and as much as 60% for some higher-rate taxpayers.
- The savings come from sacrificing gross pay, so you avoid income tax and employee NI, while paying only a small Benefit-in-Kind charge of 4% of the car's P11D value in 2026/27.
- BIK rises to 5% in 2027/28, 7% in 2028/29 and 9% in 2029/30 (HMRC, Autumn Budget 2025).
- The monthly figure usually includes lease, insurance, maintenance, tyres and breakdown cover. Electricity is normally not included.
- You can only join if your employer operates a scheme, and your post-sacrifice pay must stay above the National Minimum Wage.
- Sacrificing salary can affect mortgage affordability, student loan repayments and certain benefits, so model it against your full finances before signing.
How the salary sacrifice EV calculator works
To give you a trustworthy net monthly cost figure, the calculation draws on four inputs: your gross salary, your marginal income tax rate, the gross monthly sacrifice agreed with your employer, and the P11D value of your chosen car.
The formula:
Net annual saving = gross salary sacrificed × (income tax rate + employee NI rate) minus BIK tax owed
Where BIK tax owed = P11D value × BIK% × marginal income tax rate (HMRC company car tax guidance).
Inputs the calculation uses:
- Gross monthly sacrifice (the amount deducted from your pay before tax)
- Your marginal income tax rate (20%, 40%, or 45%)
- Employee National Insurance rate (8% between Primary Threshold and Upper Earnings Limit; 2% above)
- Car's P11D value (list price including options, minus any registered keeper discount)
- The current year's BIK percentage (4% for 2026/27)
The formula in plain English
The table below stands in for an interactive tool and shows three common scenarios for 2026/27. Your actual figure will vary based on lease term, mileage allowance and which scheme provider your employer uses.
| Scenario | Gross sacrifice/month | Tax + NI saving | BIK (4%)/month | Net monthly cost |
|---|---|---|---|---|
| MG4 SE (£27k P11D), 20% taxpayer | £450 | £126 | £18 | £342 |
| MG4 SE (£27k P11D), 40% taxpayer | £450 | £189 | £36 | £297 |
| Tesla Model 3 (£42k P11D), 40% taxpayer | £600 | £252 | £56 | £404 |
Figures are illustrative based on 2026/27 BIK rate and NI rates. Verify with your payroll team.
Benefit-in-Kind rates for electric cars (2025/26 to 2029/30)
The BIK rate determines how much income tax you pay on the car as a benefit. For EVs it remains far below petrol and diesel rates, but it is rising each year through to 2030. Source: HMRC, confirmed Autumn Budget 26 November 2025.
| Tax year | EV BIK rate | Petrol/diesel comparison |
|---|---|---|
| 2025/26 | 3% | 17–37% |
| 2026/27 | 4% | 17–38% |
| 2027/28 | 5% | 17–38% |
| 2028/29 | 7% | 17–38% |
| 2029/30 | 9% | 17–39% |
Worked examples: what you'd actually pay
Three realistic case studies to put the numbers in context. All examples are illustrative. Your actual figures depend on lease term, mileage, insurance tier and your employer's scheme.
MG4 SE (~£27,000 P11D), 20% taxpayer
Monthly gross sacrifice around £450. Tax and NI saving of roughly £126 per month. BIK charge around £18 per month. Net effective monthly cost: approximately £324–£342. Compared to a personal lease for a similar car at around £450–£500 per month, the saving is material even at the basic rate.
Tesla Model 3 (~£42,990 P11D), 40% taxpayer
Monthly gross sacrifice around £600. Tax and NI saving of roughly £252 per month. BIK charge around £57 per month. Net effective monthly cost: approximately £404. A 40% taxpayer saves almost double the percentage compared to a basic-rate driver on the same car.
BMW i4 (~£55,000 P11D), 45% taxpayer
The highest saving scenario. A 45% additional-rate taxpayer sacrificing around £750 per month saves approximately £337 in income tax and NI combined, minus a BIK charge of around £82 per month. Net effective cost is significantly below a personal or business lease equivalent for the same vehicle. Note that the BMW i4 may attract the Expensive Car Supplement for VED at list prices above £50,000, but this does not affect the salary sacrifice calculation itself.
What's included in your monthly figure
Most salary sacrifice schemes bundle significantly more than a plain lease into the monthly payment. Typical inclusions are:
- Lease rental
- Fully comprehensive insurance (most schemes)
- Servicing and maintenance
- Tyres
- Breakdown cover
- Road tax (VED)
- Often a home charger with standard installation (confirm with your specific scheme)
Not typically included: electricity and charging costs, fuel for hybrid modes.
See our guide to EV running costs vs petrol for a full breakdown of what you'd spend beyond the monthly payment.
Eligibility: who can use a salary sacrifice EV scheme
The following criteria generally apply, though individual schemes may add their own rules:
- Employer participation: your employer must have signed up to a scheme with a provider such as Loveelectric, Octopus EV, The Electric Car Scheme, Tusker, or Zest.
- National Minimum Wage floor: your post-sacrifice pay cannot fall below £12.21 per hour (the NMW rate for workers aged 21 and over from April 2025).
- Age and licence: typically 18 or over with a valid UK driving licence.
- Minimum service period: some schemes require you to have been with your employer for a set period before joining.
- Self-employed individuals are not eligible. Salary sacrifice is a PAYE arrangement and relies on a formal variation of your employment contract.
For a full breakdown of how the scheme works, see our guide to how salary sacrifice for an EV works.
The catches: hidden costs and risks the calculators don't show
Scheme marketing focuses on the saving. These are the risks that deserve equal prominence.
Mortgage affordability
Sacrifice reduces your declared gross pay. Most mortgage lenders base affordability calculations on gross income, so your maximum borrowing can fall. If you have a mortgage application within the next 12–18 months, time your application carefully or delay joining the scheme.
Student loan repayments
Student loan repayments are calculated against gross pay above the relevant threshold. Sacrificing salary can reduce the amount you repay each month, which sounds beneficial but extends the repayment period if you are on Plan 1 or Plan 2.
Employer pension contributions
If your employer calculates its pension contribution as a percentage of your gross salary, sacrificing salary can reduce the employer's contribution. Check your pension scheme rules before signing.
Early exit charges
Leaving your job mid-lease means continuing payments personally or paying termination fees to the leasing company. Some providers offer early-termination protection at an extra monthly cost; read the early-exit clauses before signing anything.
The OpRA exception is EV-specific
EVs benefit from exclusion from the Optional Remuneration Arrangements rules that would otherwise neutralise the tax advantage of most salary-sacrifice cars. This applies because EVs are "low emission" under ITEPA 2003 s.120A. Most plug-in hybrids do NOT qualify for the same treatment, so be cautious when comparing scheme quotes across vehicle types.
Salary sacrifice vs personal lease vs PCP
| Salary sacrifice | Personal lease | PCP | |
|---|---|---|---|
| Monthly cost | Lowest (for employees) | Mid | Similar to lease |
| Tax efficiency | High (income tax + NI) | None | None |
| What's included | Lease, insurance, service, tyres | Lease only | Lease only |
| End of term | Hand back | Hand back | Option to buy (balloon payment) |
| Risk if you leave job | Employer holds lease | Your personal lease | Your personal agreement |
See current electric car leasing deals if salary sacrifice isn't available through your employer, or compare leasing vs buying an electric car.
How to join a salary sacrifice EV scheme
- Confirm with your HR or payroll team whether your employer operates a scheme.
- If not, named providers such as Loveelectric, Octopus EV, The Electric Car Scheme, Tusker, and Zest can approach your employer at no cost to set one up.
- Choose a car from the eligible list and request a quote that includes your exact net monthly cost.
- Sign the salary sacrifice agreement, which is an amendment to your employment contract. Read the early-exit and NMW clauses carefully.
- Your monthly payment is deducted from gross pay before tax and NI. The car is delivered, typically within four to six weeks.
For more detail on the process, see our guide to how to lease an electric car.
Lined up an EV? Sort the home charging next.
Salary sacrifice covers the car, but the cheapest miles come from charging at home overnight. The monthly payment rarely includes your electricity costs, so a smart home charger is your next most impactful decision.
Compare home EV chargers Compare leasing dealsFrequently asked questions
- How much can I save on an electric car through salary sacrifice?
- Typically 20–50% of the equivalent personal-lease cost, rising to around 60% for some higher-rate taxpayers on lower-priced EVs. The saving is driven by your tax band, the car's P11D value, lease term, and mileage. Scheme providers typically claim savings of 20–50%, though figures vary; verify with a personalised calculation.
- Is salary sacrifice for an electric car worth it in 2026/27?
- Yes for most basic and higher-rate taxpayers. The BIK rate is still only 4% and the OpRA rules do not apply to EVs. It is marginal for those near National Minimum Wage, or with a mortgage application imminent, since sacrifice reduces your declared gross pay.
- Who is eligible for an EV salary sacrifice scheme?
- Employees of a company that has signed up to a scheme, who are aged 18 or over, hold a valid UK driving licence, and whose post-sacrifice pay stays above National Minimum Wage. Self-employed people cannot use salary sacrifice.
- What happens if I leave my job during the lease?
- Your options are usually: take the lease over personally, ask your new employer to take it on (only possible if they have a scheme), or pay an early-termination fee. Some providers offer early-termination protection cover at an extra monthly cost; check the terms before signing.
- Does salary sacrifice for an EV affect my mortgage or student loan?
- Yes, potentially. Sacrifice reduces your gross pay, which most lenders use for mortgage affordability. It also determines student loan repayments above the relevant threshold. Model the impact against your full finances before applying for a mortgage.