If you have access to a company car through your employer, understanding company car tax is essential for managing your personal finances effectively. Company car tax, officially known as Benefit in Kind (BIK) tax, applies to any car provided by an employer for personal use. This comprehensive guide covers everything you need to know about UK company car tax rates for 2026-27, how to calculate your liability, and strategies to minimise your tax burden.
The good news for electric vehicle enthusiasts is that zero-emission cars continue to enjoy significant tax advantages, with pure electric vehicles qualifying for 0% BIK rates. This makes company car tax planning particularly attractive for those considering an electric vehicle through their employer's scheme.
What is Company Car Tax (BIK)?
Company car tax, or Benefit in Kind, is a form of taxation applied to non-cash benefits employees receive from their employer. When your company provides you with a car for personal use, HM Revenue & Customs (HMRC) treats this as a taxable benefit. The taxable value is calculated based on the car's P11D value multiplied by the appropriate BIK percentage rate.
For the 2026-27 tax year (6 April 2026 to 5 April 2027), company car tax rates have been designed to encourage the adoption of low-emission vehicles while maintaining a graduated approach for higher-emission cars. Understanding these rates helps you negotiate better arrangements with your employer and make informed decisions about your vehicle choices.
Understanding P11D Values
The P11D value represents the list price of your company car including VAT and delivery charges, but excluding registration fees and road tax. This value is crucial because it forms the basis for calculating your Benefit in Kind tax liability. Your employer reports this figure to HMRC annually using the P11D form.
For example, if your company car has a P11D value of GBP 35,000 and your BIK rate is 16%, the taxable benefit would be GBP 5,600 per year. Your personal tax liability then depends on your income tax band, with basic rate taxpayers paying 20%, higher rate taxpayers 40%, and additional rate taxpayers 45% on this amount.
BIK Rates by Vehicle Type 2026-27
HMRC sets different BIK rates based on vehicle emissions. The lower the CO2 emissions, the lower the BIK percentage, resulting in less tax for the employee. Here are the current company car tax bands:
| Vehicle Type | CO2 Emissions (g/km) | BIK Rate 2026-27 |
|---|---|---|
| Pure Electric (zero emission) | 0 | 0% |
| Plug-in Hybrid (range 130+ km) | 1-50 | 5% |
| Plug-in Hybrid (range 70-129 km) | 1-50 | 8% |
| Plug-in Hybrid (range 30-69 km) | 1-50 | 12% |
| Hybrid (range under 30 km) | 1-50 | 12% |
| Low Emission (1-60) | 1-60 | 15% |
| Medium Emission (61-120) | 61-120 | 16% |
| Standard Petrol (121-150) | 121-150 | 19% |
| Higher Emission (151-170) | 151-170 | 22% |
| High Emission (171-190) | 171-190 | 25% |
| Very High Emission (191-225) | 191-225 | 28% |
| Highest Emission (226+) | 226+ | 37% |
The government has confirmed that pure electric company cars will remain at 0% BIK rate through to April 2028, making electric vehicles the most tax-efficient choice for company car drivers. This represents significant savings compared to petrol or diesel alternatives.
P11D Calculation Example
Let's walk through a practical example to illustrate how company car tax is calculated. Suppose your employer provides you with a BMW 330e plug-in hybrid with a P11D value of GBP 45,000. This vehicle emits 42g/km of CO2 and has an electric-only range of approximately 55 kilometres.
| Calculation Component | Value |
|---|---|
| P11D Value | GBP 45,000 |
| BIK Rate (Plug-in Hybrid) | 12% |
| Taxable Benefit | GBP 45,000 x 12% = GBP 5,400 |
| Basic Rate Tax (20%) | GBP 1,080 per year |
| Higher Rate Tax (40%) | GBP 2,160 per year |
| Additional Rate Tax (45%) | GBP 2,430 per year |
For comparison, the same GBP 45,000 petrol BMW 330i with emissions of 162g/km would attract a 22% BIK rate, resulting in an annual taxable benefit of GBP 9,900 and annual tax costs of GBP 1,980 (basic), GBP 3,960 (higher), or GBP 4,455 (additional rate) respectively.
Electric vs Petrol Company Car Tax Comparison
Choosing between an electric company car and a traditional petrol or diesel vehicle can result in dramatically different tax outcomes. Here's a detailed comparison for vehicles with similar list prices:
| Vehicle | P11D Value | CO2 | BIK Rate | Taxable Benefit | Higher Rate Tax (GBP) |
|---|---|---|---|---|---|
| Tesla Model 3 (Electric) | GBP 45,000 | 0 | 0% | GBP 0 | GBP 0 |
| BMW i4 eDrive35 (Electric) | GBP 48,000 | 0 | 0% | GBP 0 | GBP 0 |
| BMW 330e (Plug-in Hybrid) | GBP 45,000 | 42 | 12% | GBP 5,400 | GBP 2,160 |
| Audi A4 40 TFSI (Petrol) | GBP 42,000 | 145 | 19% | GBP 7,980 | GBP 3,192 |
| Mercedes C220d (Diesel) | GBP 47,000 | 165 | 22% | GBP 10,340 | GBP 4,136 |
| Range Rover Sport (Large SUV) | GBP 85,000 | 218 | 28% | GBP 23,800 | GBP 9,520 |
As the comparison clearly demonstrates, switching from a conventional petrol or diesel company car to a pure electric vehicle can save higher-rate taxpayers thousands of pounds annually in company car tax. Over a typical three-year company car cycle, this could represent savings of GBP 10,000 or more compared to a comparable petrol vehicle.
How to Calculate Your Company Car Tax
Calculating your personal company car tax liability involves a straightforward three-step process:
- Find your car's P11D value: This should be provided by your employer or can be found on the vehicle invoice
- Determine the correct BIK rate: Based on the vehicle's CO2 emissions and fuel type from the HMRC table
- Apply your income tax rate: Multiply the taxable benefit by your marginal income tax rate
For those who prefer a simpler approach, you can use our UK company car tax calculator which handles all these calculations automatically. Simply enter the vehicle's P11D value and CO2 emissions, and the calculator will show your annual and monthly tax liability across different income tax bands.
Factors Affecting Your BIK Rate
Several factors influence the BIK rate applied to your company car:
CO2 Emissions
The primary factor determining your BIK rate is the vehicle's official CO2 emissions figure measured in grams per kilometre (g/km). Lower emissions result in lower BIK rates, which is why electric and hybrid vehicles attract favourable treatment.
Fuel Type
Different fuel types are treated differently for company car tax purposes. Pure electric vehicles receive 0% BIK, while petrol, diesel, hybrid, and plug-in hybrid vehicles are assessed according to their specific emission levels and electric range capabilities.
Electric Range for Plug-in Hybrids
For plug-in hybrid vehicles, the official electric-only range significantly impacts the BIK rate. Vehicles capable of travelling more than 130 kilometres on electric power alone qualify for the lowest 5% rate, while those with shorter ranges fall into higher bands.
Employer Responsibilities for Company Car Tax
Employers have specific obligations regarding company car tax. They must report the taxable benefit to HMRC using form P11D for each employee provided with a company car. Class 1A National Insurance Contributions are also payable by employers at 13.8% on the value of the benefit.
Many employers offer salary sacrifice arrangements where employees can exchange part of their salary for a company car. These arrangements can be particularly tax-efficient, though the tax treatment depends on whether the vehicle qualifies as a low-emission option. For the most accurate guidance, consult the official HMRC company car tax guidance.
Strategies to Reduce Your Company Car Tax
There are several legitimate strategies to minimise your company car tax liability:
- Choose zero-emission vehicles: Pure electric cars attract 0% BIK, eliminating company car tax entirely
- Consider plug-in hybrids with long electric range: Qualify for 5-12% BIK rates
- Opt for lower P11D value vehicles: Smaller, more efficient cars have lower list prices
- Negotiate salary sacrifice carefully: Ensure the arrangement remains tax-efficient
- Track personal vs business mileage: Understand how usage affects your tax position
Company Car Tax and National Insurance
Beyond income tax, company car benefits also affect your National Insurance contributions. Employees do not pay National Insurance on company car benefits directly, but employers must pay Class 1A NICs at 13.8% on the taxable value of all company cars provided to employees.
This employer NIC cost often influences company car policies and may affect the range of vehicles your employer is willing to offer through their fleet scheme. Some employers may pass on these costs through higher salary sacrifice contributions or restrict the available vehicle options to control their tax liability.
Frequently Asked Questions
What is BIK tax on a company car?
BIK (Benefit in Kind) tax on a company car is the tax you pay on the value of a car provided by your employer for personal use. The taxable amount is calculated by multiplying the car's P11D value by the appropriate BIK percentage rate based on CO2 emissions. You then pay income tax on this amount at your marginal rate.
How is P11D value calculated?
The P11D value is the manufacturer's list price including VAT and delivery charges, but excluding the first registration fee and annual vehicle excise duty (road tax). Optional extras are included in the P11D value if they were fitted before delivery. Your employer obtains this figure from the supplying dealer and reports it to HMRC.
How much tax will I pay on a company car in 2026?
The tax you pay depends on the car's P11D value, its CO2 emissions, and your income tax band. For example, a company car with a GBP 40,000 P11D value and 19% BIK rate would create a taxable benefit of GBP 7,600, resulting in annual tax of GBP 1,520 (basic rate), GBP 3,040 (higher rate), or GBP 3,420 (additional rate).
Are electric company cars tax-free?
Yes, pure electric vehicles with zero CO2 emissions qualify for 0% BIK rate, meaning you pay no company car tax on the benefit. This applies for the 2026-27 tax year and has been confirmed to continue through April 2028. However, you will still need to report the car on your Self Assessment tax return.
Can I avoid company car tax by not using the car personally?
The benefit is calculated based on the availability of the car, not how much you actually use it personally. HMRC considers the car as available to you if you have it for any period for personal use, even if you primarily use it for business purposes. The only way to avoid BIK entirely is to not have the car made available for private use.
What happens if my employer provides a fuel card?
If your employer provides a fuel card for your company car, this is treated as a separate benefit in kind. The taxable value of a company car fuel benefit for 2026-27 is GBP 27,800, multiplied by your BIK rate. For a higher-rate taxpayer with a 19% BIK rate, this could add over GBP 2,100 to their annual tax liability.
How do I calculate company car tax savings vs personal purchase?
When comparing company car schemes to personal vehicle purchase, consider that company car tax is based on the car's P11D value regardless of how much you use it. Personal car costs include purchase financing, depreciation, insurance, maintenance, and fuel. For high-value vehicles, company car tax can be substantial, but employer contributions and the convenience factor may offset these costs.
Do company car tax rates change every year?
BIK rates are reviewed annually as part of the Budget. While zero-emission electric vehicles are protected at 0% through April 2028, other rates may increase slightly each year to reflect changing government policy towards road transport emissions. Check the HMRC company car tax tables for the latest rates.
Conclusion
Understanding company car tax is crucial for anyone provided with a company vehicle or considering entering a salary sacrifice arrangement. The 2026-27 tax year continues to offer substantial advantages for electric vehicle users with 0% BIK rates, while higher-emission vehicles attract significantly greater tax costs.
Whether you're choosing between different company car options or negotiating your employment package, use our UK company car tax calculator to compare total costs across different vehicles and tax scenarios. For the most current official guidance, always refer to the HMRC company car tax information.
Disclaimer: This article provides general information about UK company car tax for educational purposes. Tax rules and rates may change, and individual circumstances vary. Always consult a qualified tax advisor or refer to official HMRC guidance for advice specific to your situation. The calculations shown are illustrative and actual tax liabilities may differ based on individual circumstances.