Changes to company car tax

The rules governing company car tax have seen some significant changes in recent times, and with further measures announced in the Autumn Budget on 22nd November 2017, we therefore consider the latest situation.

The current rules

Employees and directors pay tax on the provision of a company car, as well as on the provision of fuel for private mileage. Employers pay Class 1A national insurance contributions (NICs) at 13.8% on the same amount. 

Company cars are taxed as a benefit-in-kind (BiK) by multiplying the list price of the car, including most accessories, by the ‘appropriate percentage’. This percentage is set by reference to the car’s fuel type and level of carbon dioxide (CO2) emissions.

The taxable car fuel benefit is calculated by applying the appropriate percentage to the car fuel benefit charge multiplier, which is £22,600 for 2017/18. Reductions may apply where the employee makes a contribution towards the cost of the car, and where an employee reimburses the employer for all private fuel.  

Rising rates

As the table below shows, a reduced rate of 9% currently applies for vehicles emitting no more than 50 g/km of CO2, although from April 2018 the BiK rates will begin to increase significantly. 

Further changes from April 2020 

For 2020/21 further changes are set to come into effect, with the introduction of a new range of BiK bands with appropriate percentages ranging from 2%-14% for ultra-low emission vehicles (ULEVs) emitting less than 50 g/km of CO2. 

Cars with emissions over this amount would see the appropriate percentage set at the lesser of:

15%, plus 1% for each 5 g/km by which emissions exceed 50 g/km, and


Those looking to purchase a new vehicle should take these changes into account.

Re-evaluating the company car

The company car continues to be a worthwhile benefit for many, despite the rising tax obligations. When considering your company car options, there are a number of factors to take into account, including the new Optional Remuneration Arrangements (the replacement for salary sacrifice schemes), your average business mileage, and the forthcoming increases in BiK rates. It may even be worth considering a company van or ULEV.

We can advise on your business motoring needs. Please contact us for further assistance.

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