Company car tax: the Benefit-in-Kind advantage
When an employer provides a car that an employee can use privately, the employee pays income tax on a "benefit in kind" (BiK) and the employer pays Class 1A National Insurance on the same value. That value is the car's list price multiplied by a percentage set by its CO2 emissions. Zero-emission cars sit in the lowest band by a wide margin, so the taxable benefit on an electric car is typically a small fraction of that on an equivalent petrol or diesel model.
The government publishes BiK percentages several years ahead, and the electric rate has been scheduled to rise gradually over time. Even so, the gap between electric and combustion cars has remained large. For employees this can mean hundreds or thousands of pounds a year less personal tax; for the employer it means lower National Insurance.
Other tax points worth knowing about, in general terms:
- Capital allowances. Businesses have been able to claim enhanced first-year allowances on new zero-emission cars and on charge-point equipment. These reliefs have end dates and conditions, so confirm what applies in your accounting period.
- Charging at work. Providing workplace charging for employees has generally not created a taxable benefit, which makes on-site charging a low-friction perk.
- Mileage rates. HMRC publishes an advisory electricity rate for reimbursing business miles in company cars, reviewed periodically.
- Vehicle Excise Duty. Electric vehicles were brought into the VED system from April 2025, so they are no longer exempt. Check current rates on GOV.UK.
Workplace charging
Charging where vehicles already park is the cheapest and most convenient way to run an electric fleet. Most cars and vans spend far longer parked than driving, so relatively modest 7–22 kW AC charge points are enough for overnight or working-day top-ups. Rapid DC charging is useful for high-mileage vehicles or quick turnarounds, but the equipment and grid connection cost much more.
Questions to answer before installing
- How much capacity do you have? Your site's supply has a maximum capacity. Load management (sharing available power between charge points) can avoid or delay an expensive upgrade.
- Who charges, and who pays? Fleet only, staff, visitors or the public? Back-office software can separate business and personal charging and handle payment.
- When? Smart charging shifts demand to cheaper, lower-carbon overnight periods and can pair well with a time-of-use tariff or on-site solar.
- Future-proofing. Running extra ducting and cable capacity during initial groundworks is much cheaper than digging up the car park later.
- Home charging. For staff who take vans or cars home, reimbursing home charging accurately needs a metered charger or clear policy.
UK regulations require new charge points to meet smart-charging and security requirements, and public charge points face their own rules on payment and reliability. A reputable installer will handle notification to the network operator.
Electric vans
Vans are often an even better fit than cars. Urban delivery, trades and service fleets tend to run predictable daily distances well within a modern electric van's range, return to base overnight, and accumulate high mileage, which is where lower running costs add up fastest. Stop-start urban driving also suits electric drivetrains, which recover energy through regenerative braking and don't idle.
Points to check carefully:
- Payload. Batteries are heavy, which can reduce payload. Some rules allow certain heavier electric vans to be driven on a standard car licence under conditions; check the current DVSA guidance.
- Range in real conditions. Cold weather, heavy loads, motorway speeds and auxiliary equipment (refrigeration, tail lifts) reduce range. Test against your worst day, not your average one.
- Van tax treatment. Van benefit charges for private use differ from car BiK and zero-emission vans have had favourable treatment; check current rates.
- Clean air zones. Electric vans are compliant with UK clean air and low-emission zones, which can avoid daily charges for older diesels.
Total cost of ownership
Comparing list prices alone is misleading. Electric vehicles usually cost more upfront but less to run. A fair comparison over the period you will keep the vehicle should include:
| Cost element | Electric tends to be… | Notes |
|---|---|---|
| Purchase or lease | Higher | The gap has narrowed; leasing rates depend heavily on the expected resale value. |
| Energy | Lower if charged at depot or home | Public rapid charging can cost as much per mile as diesel, or more. Charging mix is decisive. |
| Servicing & maintenance | Lower | No oil changes, clutch, exhaust or DPF; brakes wear more slowly. Tyres may wear faster. |
| Tax (BiK, NI, VED) | Lower | Especially for company cars; check current rates. |
| Insurance | Varies | Can be higher for some models due to repair costs. |
| Residual value | Uncertain | Used EV prices have been volatile. Leasing transfers this risk to the lessor. |
| Charging infrastructure | Additional cost | Spread over many vehicles and years; may be supported by grants or allowances. |
| Downtime | Depends on planning | Charging time only matters if it falls within working hours. |
Use the estimator to compare energy costs using your own mileage and prices.
Planning a fleet transition
- Gather telematics or mileage data for each vehicle: daily distances, where it parks, peak days.
- Rank vehicles by suitability: high mileage, predictable routes and depot parking first.
- Assess site capacity and design charging with growth in mind.
- Replace at renewal rather than early, unless the numbers clearly favour it.
- Train drivers on charging etiquette, efficient driving and range planning.
- Review after 6–12 months using real cost and reliability data.
The honest downsides
Electric vehicles are not the right answer for every duty cycle today. Very long-distance, unpredictable routes, heavy towing and remote rural work can be harder. Public charging reliability and pricing vary. Upfront costs can strain cash flow. And an electric vehicle's carbon benefit depends partly on the electricity that charges it, although on the UK grid that benefit has been substantial and grows as the grid decarbonises. Where a vehicle can't yet go electric, right-sizing, route optimisation and driver training still cut fuel and emissions.