Are electric company cars tax-efficient? The director's guide

Benefit in Kind (BIK) advantages

One of the most compelling reasons for a limited company to provide an electric car is the favourable Benefit in Kind (BIK) tax treatment. BIK is a tax on benefits employees receive from their employer in addition to their salary. For company cars, the BIK charge is based on the car's P11D value (list price including factory-fitted options and delivery, excluding first registration fee and VED) and its CO2 emissions.

For fully electric (zero-emission) vehicles, the BIK rates are substantially lower than for petrol or diesel cars. For the 2026/27 tax year, the BIK rate for fully electric company cars is just 4%. While these rates are set to gradually increase in future tax years, they remain significantly lower than those for conventional vehicles.

Here's how the BIK rates for fully electric cars are scheduled to increase:

• 2026/27: 4%
• 2027/28: 5%
• 2028/29: 7%
• 2029/30: 9%

Even at 9% in 2029/30, electric cars will still be far more tax-efficient than petrol or diesel equivalents, which can be taxed at rates between 25% and 37%.

Calculating your personal BIK tax

Your annual BIK tax is calculated using this formula: Annual BIK tax = P11D value × BIK percentage × your income tax rate

For example, if your company provides you with an electric car with a P11D value of £40,000 in the 2026/27 tax year:

• Taxable benefit = £40,000 × 4% = £1,600
• If you are a basic rate (20%) taxpayer, your personal tax would be £1,600 × 20% = £320 per year.
• If you are a higher rate (40%) taxpayer, your personal tax would be £1,600 × 40% = £640 per year.

This is a very low personal tax cost for having a company car available for private use.

Corporation Tax relief and capital allowances

When your limited company purchases an electric car, it can benefit from significant Corporation Tax relief through capital allowances.

100% First-Year Allowance (FYA)

For new, unused, fully electric cars, your company can claim a 100% First-Year Allowance (FYA). This means the full cost of the vehicle can be deducted from your company's profits in the year of purchase, significantly reducing your Corporation Tax bill. This allowance has been extended and is available for qualifying expenditure incurred until 31 March 2027 for Corporation Tax purposes and 5 April 2027 for Income Tax purposes.

This is a powerful incentive, as it provides immediate tax relief, unlike traditional cars which typically only qualify for Writing Down Allowances (WDAs) over several years.

Leasing an electric car

If your company leases an electric car, the monthly lease payments are generally deductible against Corporation Tax, provided there is some business use. This also reduces your company's taxable profits.

VAT considerations

The VAT treatment for company cars can be a bit more complex:

• Purchasing: If your company buys a new electric car, you generally cannot reclaim the VAT unless the car is used exclusively for business purposes (e.g., a taxi or driving instructor car) and not available for private use.
• Leasing: If your company leases an electric car that is also used personally, you can typically only reclaim 50% of the VAT on the lease payments. The remaining 50% becomes an additional cost to the company.

While this means you can't reclaim all the VAT, the other tax benefits often outweigh this limitation.

Charging costs and Advisory Fuel Rates (AFRs)

Your company can also cover the cost of charging an electric company car tax-efficiently.

• No fuel benefit charge: Unlike petrol or diesel company cars, there is no fuel benefit charge if your company pays for the electricity used for private journeys in a fully electric company car. This is a significant advantage.
• Advisory Electricity Rate (AER): HMRC publishes Advisory Electricity Rates (AERs) for reimbursing employees for business mileage in fully electric company cars. From 1 June 2026, the AERs are:
• 7 pence per mile for home charging.
• 15 pence per mile for public charging.

If your company reimburses employees at or below these rates, there is generally no taxable benefit or Class 1A National Insurance liability.

Common mistakes

• Not understanding BIK: Assuming electric cars are completely tax-free. While BIK is low, it's not zero, and personal tax is still due.
• Ignoring P11D value: The BIK calculation is based on the P11D value, not the discounted purchase price. A higher P11D value means a higher taxable benefit.
• Incorrect VAT reclaim: Attempting to reclaim 100% of VAT on a leased car that has private use. Only 50% is generally reclaimable.
• Forgetting Class 1A NIC: Employers still pay Class 1A National Insurance Contributions on the BIK value of the car.
• Not reviewing rates: Tax rules and rates can change. Always check the latest HMRC guidance for the current tax year.