Knowing the tax impact of using a company car

Anna Stubbs • September 11, 2023

Having the use of a company car is a great perk. But are you aware of the tax impact of a company car and how having this vehicle may affect your company benefits?

Two of the key tax considerations related to company cars are the benefits in kind (BIK) tax charges incurred by the driver, and the tax deductions which benefit the company. At present, it’s also worth understanding the benefits of running an electric or low-emission vehicle.

Understanding the BIK charges on your company car

The BIK amount you’re taxed on as the driver of a company car is calculated as a percentage of the list price of the vehicle when new. The list price includes delivery charges, optional extras and VAT but not the registration fee or the first year’s vehicle excise duty.


Because it’s based on the original ‘list price when new’ value, any discounts are ignored, and even for used cars, the original value is retained.



The percentage applied depends on CO2 emissions, and for hybrid vehicles the on-electric range, as you can see in the table below:

It’s worth noting that:

  • Diesel vehicles registered before January 2021 that aren't RDE2-compliant attract a 4% surcharge on their published BIK rate, up to a maximum total of 37%
  • Where fuel is provided by the company for private mileage, the same percentage is applied to a value of £27,800.


Claiming company benefits against the cost of a company car

Although the driver is taxed on the perk of driving a company car, the company can benefit by claiming deductions for the costs involved in running this vehicle.


All expenses in connection with the operation and maintenance of the car are deductible as trading expenses, including things such as insurance, fuel and maintenance.

Capital allowances are also available in respect of the purchase price of the vehicle.


Depending on the vehicle, the capital allowances available are:

  • 100% First Year Allowance – this is only for new zero-emission cars.
  • 18% annual allowance on written-down value – this is for second-hand electric vehicles and all vehicles with emissions between 1 and 50 g/km
  • 6% annual allowance on written-down value for all other new and used vehicles.


Talk to us about the tax implications of company cars

If you’re thinking about investing in a company car, it’s worth considering that there are tax advantages for both the company and the driver in selecting an all-electric vehicle. There are also advantages, to a lesser extent, in opting for a low-emission vehicle.


We can calculate the likely personal BIK tax charge on any vehicle you’re considering buying through your business, as well as advising on the tax and other implications for the company.


Talk to us before purchasing a company car for personal use. The tax charges can be higher than you may expect, so it’s worth considering the BIK impact before you buy.

Get in touch for a chat about your company car plans.

By Anna Stubbs June 2, 2026
“Q: Why do I need an evolving strategy for my small business?” You’re a business owner or CEO. And that means it’s your responsibility to take care of the business, invest in the right places and make the company a success story. However, to do this, you need an agreed business strategy that lays out your goals, your mission and your plan for taking the company to the next level. So, why does this need to be an evolving strategy? “A: Your business strategy is not a static document – it’s a plan and mission that should be fluid, agile and able to react to change.” We’re trading in uncertain times at present. Each day presents a new challenge for small businesses, and having a plan that can react to change is a major competitive advantage.
By Anna Stubbs June 2, 2026
More than ever, cashflow is a vital part of staying afloat, whether your business is in recovery or growth mode. Revenue, profit and your bottom line all deserve your attention. But keeping everything running is the baseline. Regular cashflow forecasts help you keep that in focus. Here’s why: Cost control - If you can't reach your targets for income, reining in your costs may give you a little extra head room to manage cashflow while you plan your next move. Visibility on outgoings - Cost control can be a challenge when it’s hard to pinpoint hidden costs or where established ways of doing things cost more money than they should. You may also have been coping with unexpected expenses, as you’ve adapted your business for unplanned circumstances or increased costs. Improving business practice - It's more than only keeping an eye on outgoings (though that's important). It's about looking at each aspect of your business and business systems (or the gaps where there should be business systems) to see if poor practice is driving costs up unnecessarily. It can be useful to break it down - You can look at cost centres such as office supplies or freight. Or you can look at what those costs do for your business. It can help to analyse costs in terms of cost of sale and overheads.
By Anna Stubbs June 2, 2026
“Q: How does an accountant support my financial performance?” We’re all used to the idea of a business needing an accountant. But have you ever stopped to think what a good accountant and business adviser can actually bring to your company? Advances in technology, software and AI are changing our expectations of what a basic accountant/business owner relationship can offer. So, it’s important to reassess your expectations and to find out where we can add real, additional value. “A: Your accountant is now a full-fledged business adviser, ready to help you review, manage and transform your finances and strategy.”  In previous decades, your accountant dealt primarily with historical data – the transactions and cash inflows/outflows that had happened in the past. Today, with access to so much smart forecasting, data analysis and forward-looking scenario-planning, we can tell you far more about the future of your business.