Why an Electric Company Car Saves You Thousands in the UK

The UK government has made electric company cars so tax-efficient that they've become the single best financial perk available to most employees. At a BIK rate of just 2%, an electric company car costs a fraction of what the equivalent petrol or diesel would — and the gap is enormous.

A Tesla Model 3 as a company car costs a 20% taxpayer just £14/month in BIK tax. The equivalent petrol BMW 3 Series costs over £200/month. That's a saving of more than £2,200/year, and it gets even bigger for 40% taxpayers.

1. The 2% BIK Rate: What It Means in Practice

Every fully electric car with zero tailpipe CO2 emissions qualifies for the 2% BIK rate in 2026/27. This applies regardless of the car's price — a £27,000 MG4 and a £110,000 Mercedes EQS both get the same 2% rate.

For comparison, a typical petrol car pays 25–37% BIK. A diesel often hits 30–37%. The difference in real money is stark:

2. Worked Example: Tesla Model 3 vs Petrol Equivalent

Let's compare the full annual cost for a 40% taxpayer:

Over a typical 3-year company car agreement, that's a saving of over £14,000 in BIK tax alone. Add in lower fuel costs (electricity vs petrol) and zero road tax, and the total saving is even greater.

3. Salary Sacrifice + EV = Maximum Savings

The biggest savings come when you combine an electric company car with a salary sacrifice scheme. With salary sacrifice, you give up gross salary in exchange for the car, saving both income tax and National Insurance on the sacrificed amount.

The only tax you then pay is BIK at 2% on the P11D value — which is dramatically less than the income tax and NI you saved. For a 40% taxpayer, the effective discount can be 50–60% compared to leasing the same car privately.

4. Free Workplace Charging: No Extra BIK

If your employer provides free electric charging at work, there is no additional BIK charge. This is a specific HMRC exemption that makes workplace charging one of the cheapest ways to run your EV.

Many employers are installing workplace chargers specifically because of this tax benefit. It costs them relatively little (electricity is cheap compared to the BIK exemption value) and it's a significant perk for employees.

If your employer doesn't yet have workplace chargers, the Workplace Charging Scheme (WCS) offers vouchers of up to £350 per charging socket (up to 40 sockets per employer) to help with installation costs.

5. Home Charging Reimbursement

If you charge your electric company car at home for business journeys, your employer can reimburse you at HMRC's advisory electricity rate of 7p per mile (as of March 2026). This reimbursement is tax-free.

For private mileage, the reverse applies: if your employer pays for your electricity (e.g. through a home charging account), you should reimburse them at 7p/mile for personal use to avoid a fuel benefit charge.

At typical EV efficiency (around 3.5 miles per kWh) and average home electricity rates, 7p/mile more than covers the actual cost of charging at home, making this a small additional benefit.

6. Future BIK Rates: Still Worth It

The 2% rate won't last forever, but the trajectory is gradual and EVs will remain the cheapest company car option for the foreseeable future:

Even at 5% in 2030/31, a £42,000 EV would cost a 40% taxpayer just £70/month in BIK. The equivalent petrol car at 30% BIK would cost £420/month. The EV advantage remains massive.

7. Which EVs Qualify for 2% BIK?

All fully electric (zero tailpipe emission) cars qualify. This includes every battery electric vehicle (BEV) on sale in the UK. Popular qualifying models include:

• Tesla Model 3, Model Y, Model S, Model X
• BMW i4, iX1, iX3, iX
• Hyundai Ioniq 5, Ioniq 6
• Kia EV6, EV9
• MG4, MG ZS EV
• VW ID.3, ID.4, ID.5, ID.7
• Polestar 2, Polestar 3
• Mercedes EQA, EQB, EQC, EQE, EQS
• Audi Q4 e-tron, Q6 e-tron, Q8 e-tron
• BYD Atto 3, Seal, Dolphin
• Cupra Born

Plug-in hybrids (PHEVs) get BIK rates between 2% and 14% depending on their electric-only range. Only PHEVs with 130+ miles of electric range qualify for 2%.

8. How to Convince Your Employer to Offer an EV Scheme

If your employer doesn't yet offer an EV company car or salary sacrifice scheme, here are the key arguments:

• Employer NI savings: They pay 15.05% Class 1A NI on the BIK value. On a 2% BIK car, that's almost nothing compared to a petrol car at 30% BIK
• With salary sacrifice, they save even more: Reduced employer NI on the sacrificed salary portion (15.05% saving)
• Zero setup cost: Providers like Octopus EV, Tusker, and LeasePlan handle everything
• Employee retention and recruitment: Salary sacrifice EV schemes are now a key benefit employees actively look for
• ESG and sustainability: Transitioning the fleet to electric supports corporate environmental commitments
• Workplace Charging Scheme: Government grants of up to £350/socket to install workplace chargers

Final Thoughts

An electric company car is the single most tax-efficient way to drive a new car in the UK. The 2% BIK rate means you can drive a £42,000 Tesla for £14/month in tax — a saving of thousands compared to any petrol or diesel alternative. Combined with salary sacrifice and free workplace charging, the total cost can be 50–60% less than buying or leasing privately.

The 2% rate is confirmed until 2028, with gradual increases to 5% by 2031. Even then, EVs will remain dramatically cheaper than combustion engine company cars. If you have access to a company car scheme, electric is the obvious choice.

Tax rates and BIK bands are subject to change. For specific tax advice, consult a qualified accountant or tax adviser.

Related reading: BIK Tax Explained | Best Company Cars 2026 | Salary Sacrifice Schemes