Does your business need a car? It is one of those questions that sounds simple until you look at the numbers. For women running small businesses in the UK, the choice between owning a vehicle, claiming mileage, hiring when needed, or joining a car club can affect your tax bill, your cash flow, and how much admin you take home each evening. This guide sets out the 2026 figures and a practical way to decide.

Has anything actually changed?

Start here. If you have managed without a business car so far, ask what has changed. A new contract that requires site visits, a pop-up shop that needs stock runs, a move into deliveries, or regular travel to clients who are not on public transport routes can all justify a vehicle. But occasional meetings, one-off events, or the vague feeling that a business owner should have a car rarely justify the full cost of ownership. Be honest about how many miles you really drive for work.

What does a business car really cost?

Owning a car in the UK is expensive before you add any business use. According to RAC motoring cost analysis from 2024, the annual cost of running a car can exceed £3,000 once you include insurance, vehicle excise duty, maintenance, fuel, and depreciation. For a small business, that is money that could go into marketing, stock, staff, or paying yourself.

The cost is not just financial. A company car creates extra admin: tracking business and personal mileage, servicing, MOTs, insurance renewals, breakdown cover, and tax reporting. If the vehicle is owned by your limited company, you must also account for benefit-in-kind tax on any private use. For many women founders, the time spent on that admin is time not spent on revenue-generating work.

How do HMRC mileage and company car rules compare?

How you treat a vehicle for tax depends on your business structure. If you are a sole trader, the simplest route is usually to use your own car and claim the approved mileage allowance payment. For the 2026/27 tax year, HMRC allows 45p per mile for the first 10,000 business miles in a car or van, and 25p per mile after that. Motorcycles are 24p per mile and bicycles are 20p per mile. These amounts are designed to cover fuel, wear and tear, and a portion of fixed costs.

If your limited company owns the car, the company can claim capital allowances and running costs, but you will usually pay benefit-in-kind tax on private use. For 2026/27, a fully electric company car with zero CO2 emissions attracts a benefit-in-kind rate of 3%, rising to 4% in 2027/28 and 5% in 2028/29. Higher-emission cars attract much higher rates. You can check the latest company car tax rates on GOV.UK.

For more on what you can claim, see our guides to allowable expenses for the self-employed and self-employed tax in 2026/27.

What are the alternatives to buying a business car?

If your car use is occasional, one of these options is usually cheaper and more flexible than ownership.

Car clubs

Car clubs let you book a vehicle by the hour or day, often through an app, with cars parked locally. CoMoUK, the national charity for shared transport, supports car club growth across the UK. Members typically pay a monthly or annual fee plus a per-hour or per-mile charge. This works well if you need a car a few times a month for client visits, stock collections, or equipment transport.

Car hire

Traditional hire is still useful for longer trips or when you need a specific type of vehicle. Compare daily rates against the annual cost of ownership. If you only hire for 20 days a year, you may spend far less than insuring, taxing, and maintaining a car you rarely use.

Lift-sharing and public transport

For some journeys, sharing a lift or using trains and coaches is cheaper and more productive. You can work while you travel, and you avoid parking costs and city congestion charges. Liftshare platforms match drivers with passengers going the same way, splitting fuel costs.

When does short-term car insurance make sense?

If you borrow a friend or family member’s car for a business trip, do not assume their policy covers you. Short-term or temporary car insurance can cover you for a single day up to 28 days without affecting the owner’s no-claims discount. It is worth considering if you:

• need to move stock or equipment for a short-term project or pop-up shop
• are attending meetings or conferences outside your usual area
• are moving between offices for a few days
• have just bought a vehicle for the business and need cover before an annual policy starts

Always check that the policy covers business use, not just social, domestic, and pleasure. If you are not named on the owner’s policy, driving without the right cover could invalidate their insurance.

Does your business need a car?

Use these questions to cut through the guesswork.

1. How many business miles do you drive each month? Under 500 miles usually points to car clubs, hire, or mileage claims.
2. Is the journey predictable? Regular long-distance travel can suit ownership or a company car lease.
3. Do you need to carry tools, stock, or equipment? A van may make more sense than a car.
4. What is your business structure? Sole traders often find mileage claims simpler; limited company directors may weigh up company car tax.
5. Can you afford the cash tied up in a vehicle? Depreciation is often the biggest hidden cost.

What action steps should you take next?

• Track your business mileage for one month to get a true picture of use.
• Compare the annual cost of ownership against car club, hire, and mileage claim options.
• Check the latest HMRC mileage and company car tax rates on GOV.UK.
• Speak to an accountant about whether a company car or mileage claim is more tax-efficient for your situation.
• If you borrow a car for business, buy temporary insurance that includes business use.
• For more ways to reduce overheads, see our guide to cutting costs for UK small businesses.

What is the right choice for 2026/27?

So, does your business need a car? For many UK small businesses, the answer is no. Most women founders and self-employed professionals are better off claiming mileage on a personal car, using a car club, or hiring occasionally. Before you commit, run the numbers for 2026/27 using HMRC’s current rates and be realistic about how often you will actually drive for work.