EV Salary Sacrifice Explained: 4% Benefit-in-Kind (2026/27)

Salary sacrifice is an arrangement where you give up part of your gross salary (before tax) and your employer provides a leased electric car in exchange. Because the sacrificed money never reaches your payslip as taxable income, you do not pay income tax or employee National Insurance on it.

In exchange, the car counts as a workplace benefit, so you pay Benefit-in-Kind (BiK) tax on it. And here is the whole trick: BiK on electric cars is tiny. For 2026/27 it is 4% of the car's list price, while petrol and diesel cars sit in far higher bands. You trade full income tax on cash for a small benefit tax on a car.

The arrangement runs through your employer (or a scheme provider they appoint), typically over 2-4 years, and usually bundles insurance, maintenance, breakdown cover and tyres into the single monthly sacrifice. One payslip line replaces a folder of car admin.

Since the plug-in car grant ended in 2022, this has become the channel for affordable new EVs in the UK: typical all-in savings run £5,000-15,000 a year versus financing the same car privately.

BiK tax works like this: the car's list price multiplied by its BiK percentage gives a "taxable benefit", and you pay your marginal income tax rate on that amount.

The EV BiK trajectory (as legislated, June 2026):

Three observations:

• 4% is small. Petrol and diesel company cars are taxed at multiples of this, which is why salary sacrifice never made sense for them the way it does for EVs.
• The rate is rising, slowly and predictably. One point per year initially, reaching 9% by 2029/30. Still low, but a car leased today locks in the cheapest years of the schedule.
• The percentage applies to list price, so the absolute tax scales with the car you choose.

Take a £40,000 EV leased through salary sacrifice by a 40% taxpayer in 2026/27:

• Taxable benefit: £40,000 x 4% = £1,600
• BiK tax payable: £1,600 x 40% = £640 a year (about £53 a month)

That £640 is the cost of the tax structure. Against it, the lease payments come out of gross salary: on every £100 of sacrifice, a 40% taxpayer would otherwise have lost £40 to income tax alone before National Insurance, so most of each sacrificed pound would never have reached their pocket anyway. The income tax and NI avoided on a four-figure annual lease dwarfs the £640 of BiK, which is exactly where the £5,000-15,000 a year of typical savings comes from.

Indicative illustration, accurate as at June 2026. Your saving depends on your tax band, the car's list price, the lease terms and your employer's scheme; get a personalised quote through the scheme provider.

A 20% taxpayer saves less in absolute terms (the same £1,600 benefit is taxed at £320, but the avoided income tax is also smaller); higher earners save the most. Compare specific cars and terms on our salary sacrifice page.

Most UK salary sacrifice schemes are structured as all-inclusive leases. Commonly bundled:

• The car itself, brand new, on a 2-4 year term
• Fully comprehensive insurance, often including business use
• Maintenance, servicing and tyres
• Breakdown cover

What stays your responsibility: the electricity. Home charging at off-peak EV tariff rates is where the running-cost savings stack on top of the tax savings; see our charging costs guide and charger installation guide (chargers from about £999 installed).

Any battery electric vehicle can be offered through a scheme; in practice providers list most mainstream models, from the Tesla Model Y and MG4 down the price list. Browse the field on our vehicle pages.

Salary sacrifice is genuinely good value, and it still deserves clear eyes:

• Your employer must offer a scheme. You cannot set one up solo. Many employers will join one if asked, since it costs them little (and saves them employer NI on the sacrificed salary); the ask is worth making.
• Your salary cannot drop below the minimum wage after the sacrifice, which caps how much car lower earners can run through the scheme.
• Leaving the job matters. The car belongs to the scheme, so resignation or redundancy triggers early-termination terms. Good schemes carry protections; read them before signing, not after.
• Sacrificed salary is gone for other purposes: it can affect mortgage affordability calculations and pension contributions depending on how your employer structures things.
• BiK rises on schedule: 4% now, 9% by 2029/30. Still cheap, but model the later years of a long lease at their actual rates.

Set salary sacrifice against the rest of the UK EV landscape (as at June 2026):

• No purchase grant: the plug-in car grant for private buyers ended in 2022. Nobody is writing cheques toward EV purchases.
• Standard road tax: EVs pay VED at the standard rate of about £195 a year since April 2025, the same as most petrol cars (which also pay fuel duty at the pump, while EVs pay for electricity instead).
• Cheap running costs: home charging, especially off-peak or solar, keeps per-mile costs well below petrol.

In that landscape, the 4% BiK structure is the one place the tax system still actively subsidises going electric, and it is worth £5,000-15,000 a year to typical participants. If your employer offers a scheme, price it before you price anything else; if they do not, send HR the idea. Then sort the home side: get charger quotes from local installers.