For many women running a UK business, a car is one of the largest single purchases the company will make. Yet a vehicle is rarely an investment that appreciates: depreciation starts the moment it leaves the forecourt. Before you commit, it is worth asking whether tying up capital in a car is the best use of money that could go on stock, marketing, equipment or staff. This guide to business car tax UK rules, finance options and record keeping will help you make a decision that protects your cash flow.

It is easy to let ego drive the decision. Professionals moving from a corporate salary to self-employment sometimes use a redundancy payment or savings to buy a prestige car to “prove” the business is a success. In a few client-facing roles, image genuinely matters. More often, the same professional impression can be made by a well-maintained, reliable car that leaves your working capital intact.

Choose a vehicle for total cost of ownership

When you compare cars, look beyond the list price. Fuel or charging costs, insurance, servicing, road tax and depreciation usually matter more over the life of the vehicle. Reliability surveys such as the annual Which? Car Survey and the JD Power UK Vehicle Dependability Study consistently place Japanese and Korean brands near the top, with Lexus, Toyota, Kia and Honda frequently scoring well. Skoda also remains a strong performer for value and dependability. A two- or three-year-old car from a reliable brand can be a far better business buy than a brand-new model from a less proven range.

Electric vehicles and business car tax UK

Electric vehicles (EVs) are now a practical option for many UK businesses. Modern EVs typically offer real-world ranges of 200 miles or more, and the public charging network has expanded significantly. For drivers who mainly cover local or regional journeys, an EV can cut fuel and maintenance costs sharply.

The tax advantages remain meaningful, though they are tightening. For the 2026-27 tax year, fully electric company cars attract a benefit-in-kind (BIK) rate of 3% of the list price, according to HMRC company car tax tables. This compares favourably with petrol and diesel equivalents, which attract higher BIK rates based on CO2 emissions. The electric BIK rate is set to rise to 4% in 2027-28 and 5% in 2028-29, so factor this into long-term budgets.

Sole traders and partnerships can use HMRC’s Advisory Fuel Rates, which from June 2025 include an electric vehicle rate of 8 pence per mile for business mileage in company-owned electric cars. Do check the details before you buy. The UK plug-in car grant for private buyers ended in June 2022, but the Workplace Charging Scheme still helps eligible businesses, charities and public-sector organisations with up to 75% of the cost of installing chargepoints, capped at £350 per socket. From April 2025, electric cars also became liable for Vehicle Excise Duty: the standard annual rate is £195 for 2025-26 and 2026-27, with a £10 first-year rate for zero-emission cars first registered from 1 April 2025, according to gov.uk guidance.

Business car finance options

If you cannot buy from savings, the main routes are:

• Personal or business loan – you own the car from the outset and can sell it later, but monthly payments may be higher than other methods.
• Hire purchase (HP) – you pay a deposit plus fixed monthly payments and own the car after the final instalment. HP can be competitive for new cars; compare the total cost carefully for used vehicles.
• Personal contract purchase (PCP) – lower monthly payments because you defer a large “balloon” payment. At the end of the term you can pay the balloon, hand the car back or part-exchange it. Be realistic about mileage limits and condition charges.
• Leasing (contract hire) – you rent the car for a fixed period and mileage. You never own it, but monthly costs are predictable and maintenance packages are often available.
• Salary sacrifice – employees lease an EV through the employer, with payments taken from gross salary. Because EVs attract low BIK, this can be cost-effective for both employee and employer.

MoneyHelper, the government-backed guidance service, suggests comparing the annual percentage rate (APR), deposit requirements, total amount payable, mileage limits and any early-repayment or excess-mileage charges. Never sign a finance agreement if the monthly payment would strain your cash flow.

Tax relief and record keeping

How you claim tax relief depends on your business structure and how the car is funded. If you are unsure whether to operate as a sole trader or limited company, see our guide to sole trader vs limited company UK.

If you use your own car for business travel, HMRC’s approved mileage rates are usually the simplest route. For the 2026-27 tax year, you can claim 45p per mile for the first 10,000 business miles in a tax year and 25p per mile thereafter. These rates cover fuel, servicing, insurance and depreciation. If you are an employee and your employer pays less than the approved rate, you can claim Mileage Allowance Relief on the difference. Alternatively, you can claim the business proportion of actual running costs, but you cannot claim both.

If the business owns or leases the car, you can claim the business proportion of fuel, servicing, insurance, road tax and finance interest. VAT recovery on cars is restricted unless the vehicle is used exclusively for business, so most small firms reclaim VAT only on fuel used for business journeys or account for private use through HMRC’s fuel scale charge. Leasing VAT is also restricted when there is any private use.

Company-car drivers face a BIK charge based on the car’s list price and CO2 emissions. Low-emission and electric cars currently carry much lower charges than petrol or diesel equivalents. Employers must also pay Class 1A National Insurance on the BIK value.

Capital allowances let businesses write off the cost of a car against taxable profits. The rate depends on CO2 emissions and whether the car is new or second-hand. For the 2026-27 tax year, cars with CO2 emissions of 50g/km or less are written down at 18% a year in the main rate pool, while cars with CO2 emissions above 50g/km are written down at 6% a year in the special rate pool, according to HMRC. The 100% first-year allowance for new and unused zero-emission cars ended in April 2025, so new electric cars now join the 18% main rate pool. For more on what you can claim, see our allowable expenses self employed UK guide.

Practical action steps

• Keep a mileage log separating business and private journeys.
• Compare whole-life costs, not just monthly finance payments.
• Check your expected annual mileage against finance limits and battery range if choosing an EV.
• Speak to an accountant before buying through the business; the wrong structure can be expensive.
• Review insurance: business use or commercial cover may be needed.
• Check whether your car’s list price exceeds £40,000, as the expensive car supplement adds £425 a year to VED for years two to six, according to gov.uk.

A business vehicle is a significant commitment. Take the emotion out of the decision, run the numbers for your own mileage and business car tax UK position, and get independent advice. The right car, funded and taxed in the right way, can be a genuine asset to your business without draining the capital you need to grow. For broader context on women running businesses in the UK, see Women in Business: Key UK Facts.