Company Car BIK Explained: A Guide to Benefit-in-Kind Tax

1. What is Benefit-in-Kind (BIK)?

Benefit-in-Kind (BIK) is a tax payable on certain benefits or perks that employees receive from their employer in addition to their salary.

A company car made available for private use is one of the most common examples.

If your employer provides you with a company car that you can use outside of business journeys, HMRC generally treats this as a taxable benefit. The amount of tax you pay is known as company car tax or BIK tax.

The amount payable depends on several factors:

• The vehicle's P11D value: Its list price, including VAT and any factory-fitted options.

• CO2 emissions: The amount of carbon dioxide the vehicle produces per kilometre.

• Electric range: For plug-in hybrid vehicles emitting between 1g and 50g of CO2 per kilometre.

• Your personal income tax rate: which may be 20%, 40% or 45% in England, Wales and Northern Ireland, with different income tax bands applying in Scotland.

One of the biggest advantages of choosing an electric company car is the significantly lower BIK percentage compared with most petrol and diesel vehicles.

2. How is company car BIK calculated?

Company car tax is calculated using the vehicle's P11D value and its applicable BIK percentage.

The calculation is:

P11D value × BIK percentage × your income tax rate = annual BIK tax

You can then divide the annual figure by 12 to work out your approximate monthly tax cost.

Example: Electric company car

Let's assume you choose a fully electric company car with:

• P11D value: £40,000

• BIK percentage (2026/27): 4%

• Income tax band: 20%

The calculation would be:

£40,000 × 4% = £1,600 taxable benefit
£1,600 × 20% = £320 annual tax

Your estimated BIK cost would be £26.67 per month.

If you pay income tax at 40%, the same vehicle would cost approximately £53.33 per month in BIK tax.
This illustrates why electric company cars can offer significant tax savings, particularly for higher-rate taxpayers.

3. What is the P11D value?

The P11D value is the figure used to calculate the taxable benefit of a company car.
It is generally based on the vehicle's original list price, including:

• VAT

• Factory-fitted optional extras

• Any relevant accessories

It excludes the first-year registration fee and vehicle tax.

Importantly, the P11D value is not necessarily the same as the discounted purchase price or the monthly lease rental.
Even if your employer obtains a substantial discount on a vehicle, its BIK calculation will generally be based on its original P11D value.

6. Is BIK payable on company vans and pick-up trucks?

Company vans are subject to different BIK rules from passenger cars.

Generally, employees do not have to pay company van tax if the vehicle is used mainly for business journeys and any private use is limited to commuting and other insignificant private journeys. However, if a company van is available for more substantial private use, a BIK charge may apply.

What counts as insignificant private use?

HMRC provides examples of the types of private use that may be considered insignificant.

Examples of insignificant private use include:

• Occasionally taking household rubbish or an old mattress to the local tip.

• Making a slight detour to drop children off at school on the way to work.

• Stopping at a shop or attending a dentist appointment during a work journey.

Examples of significant private use include:

• Regularly using the van for supermarket shopping.

• Taking the van away on holiday.

• Using the van for social activities or general personal journeys.

The distinction is important. If private use goes beyond what HMRC considers insignificant, a taxable benefit may arise.

Company van BIK charges for 2026/27

For the 2026/27 tax year, the standard annual company van benefit charge is £4,170.

If private fuel is also provided, a further annual fuel benefit charge of £798 may apply. 

The actual tax payable depends on the employee's income tax band.

What about electric company vans?

Fully electric vans that produce no CO2 emissions currently benefit from a zero van benefit charge. This means employees can have an electric company van available for private use without incurring the standard company van BIK charge.

There is also no van fuel benefit charge for zero-emission vans, even where electricity is provided for private journeys.

This can make electric vans an attractive option for businesses looking to reduce fleet emissions while offering employees a tax-efficient company vehicle.

Based on the standard company van benefit charge, the tax payable by the employee is as follows:

If the van fuel benefit also applies, the additional tax payable by the employee is:

These figures show the estimated tax payable by the employee, assuming the full standard benefit charges apply. Certain circumstances can reduce or remove the taxable benefit.

What about double cab pick-up trucks?

The tax treatment of double cab pick-up trucks changed from 6 April 2025.

HMRC now assesses these vehicles based on their overall construction and suitability for carrying goods or passengers. Most double cab pick-ups are expected to be treated as cars for BIK purposes.

This means that where a vehicle is classified as a car, the company car tax rules apply, with the charge calculated using its P11D value and CO2 emissions.

Transitional arrangements apply to employers who purchased, leased or ordered qualifying double cab pick-ups before 6 April 2025. The previous treatment can continue until the earliest of disposal, lease expiry or 5 April 2029.

Employers should check the classification of individual vehicles before determining the applicable tax treatment.

7. How can I work out my company car tax?

The easiest way to compare the BIK costs of different vehicles is to use a company car tax calculator.

You will generally need:

• The vehicle's P11D value.

• Its CO2 emissions.

• Its electric-only range, if applicable.

• Your personal income tax rate.

You can use the HMRC Company Car Tax Calculator to work out the taxable value of a company car and compare the potential tax implications of different vehicles.

Remember that the lowest monthly lease rental does not necessarily mean the lowest overall cost. BIK tax should also be considered when comparing company car options.

8. How can Yorkshire Fleet help?

At Yorkshire Fleet, we help businesses find the right vehicle leasing and fleet management solutions for their requirements.

Whether you're an employer reviewing your company car policy or an employee considering your next company vehicle, understanding the financial implications of BIK is an important part of the decision.

We can help you explore:

• Business car leasing and vehicle options.

• Electric and plug-in hybrid company cars.

• Employee Salary Sacrifice schemes.

• Fleet management and ongoing vehicle support.

• Vehicle choices that align with your business and employee requirements.

Disclaimer: This guide is intended for general information purposes only and does not constitute tax, legal or financial advice. BIK rates, tax rules and individual circumstances can change. Always check the latest HMRC guidance or speak to a qualified tax adviser before making a decision.