Comparison · Motoring & Tax · 2026
EV Salary Sacrifice vs Personal Lease 2026: Which Saves More on an Electric Car
Electric car salary sacrifice schemes have become popular because the tax rules are unusually generous, thanks to a Benefit-in-Kind rate of just 4% for 2026/27. This guide compares the true monthly cost of salary sacrifice against a standard personal lease for the same car, with a worked example on a GBP 40,000 salary.
TL;DR -- 30-Second Summary
- • Salary sacrifice EVs: sacrificed salary avoids income tax and NI, only a small 4% BIK charge applies
- • Personal lease: paid entirely from taxed, NI'd income with no relief at all
- • Higher-rate taxpayers save the most because 40% tax and 2% NI are avoided on the sacrifice
- • Trade-offs: limited car choice, possible mortgage and pension impact, early-exit penalties
- • 4% BIK rate holds for 2026/27, rising to a legislated 5% in 2027/28
Side-by-Side Comparison
| Feature | EV Salary Sacrifice | Personal Lease (PCH) |
|---|---|---|
| How it's funded | Gross salary given up before tax and NI | Post-tax, post-NI income |
| Income tax relief | Full relief on the sacrificed amount (20%/40%/45%) | None |
| National Insurance relief | Full relief on the sacrificed amount (8%/2%) | None |
| Benefit-in-Kind tax | 4% of P11D value, taxed at marginal rate (2026/27) | Not applicable |
| Car choice | Limited to employer scheme's approved list | Any car, any provider |
| Mortgage affordability impact | Reduces payslip salary figure used by some lenders | No effect on salary figure |
| Leaving your job early | Scheme usually ends, possible termination charge | Contract continues regardless of employer |
Worked Example: A GBP 500 Monthly Sacrifice
Take a GBP 40,000 salary employee sacrificing GBP 500 a month (GBP 6,000 a year) for an EV with a P11D value of GBP 35,000, taxed at basic rate (20% income tax, 8% employee NI) since the sacrifice keeps them within the basic-rate band. The 4% BIK rate for 2026/27 applies to the P11D value regardless of the lease cost.
| Measure | Salary sacrifice | Personal lease |
|---|---|---|
| Gross cost of the car (annual) | GBP 6,000 (sacrificed salary) | GBP 6,000 (assumed same lease cost) |
| Income tax saved (20%) | GBP 1,200 | GBP 0 |
| Employee NI saved (8%) | GBP 480 | GBP 0 |
| BIK taxable benefit (4% of GBP 35,000) | GBP 1,400 | Not applicable |
| Tax on BIK (20% of GBP 1,400) | GBP 280 | Not applicable |
| Net annual cost | about GBP 4,600 (GBP 6,000 - GBP 1,680 relief + GBP 280 BIK) | GBP 6,000 (full post-tax cost) |
| Net monthly cost | about GBP 383 | GBP 500 |
At basic rate, the same GBP 500-a-month car costs roughly GBP 383 a month net through salary sacrifice, around 23% cheaper. A higher-rate (40% tax, 2% NI) taxpayer saves even more: they would avoid GBP 2,400 of income tax and GBP 120 of NI on the sacrifice, pay GBP 560 BIK tax on the same GBP 1,400 benefit, giving a net annual cost of around GBP 4,160, or about GBP 347 a month, versus GBP 500 for the identical car leased personally. These are illustrative figures; use a salary sacrifice calculator with your own salary, tax band and the specific car's P11D value and lease quote.
When Salary Sacrifice Wins
Salary sacrifice wins for most employees who have access to a scheme, are happy with a car from the approved list, and are not planning a mortgage application or job change during the lease term. Higher-rate taxpayers see the biggest gap versus a personal lease, because 40% tax and 2% NI relief on the sacrifice easily outweighs the small 4% BIK charge.
It also wins for anyone prioritising simplicity: insurance, servicing and often breakdown cover are typically bundled into the scheme's fixed monthly deduction, with no separate bills to manage.
When a Personal Lease Wins
A personal lease wins when you want a car outside your employer's approved list, when you are about to apply for a mortgage and want your full payslip salary to count, or when your job situation is uncertain and you do not want an arrangement tied to your employment. It also wins if your employer does not offer a scheme at all, or if you are self-employed and salary sacrifice is not available to you.
It suits people who value flexibility over the tax saving: a personal lease is a contract between you and the leasing company only, independent of your job.