Pricing & valuations for dealers

Is buying and selling cars profitable in the UK?

Updated 4 October 2026 · 3 min read · by DealerPricing

It can be, but the profit is made when you buy, not when you sell. Work back from what the car will retail for, take off preparation, fees and the margin you need, and never pay more than what is left. Once you buy cars to sell for profit you are a trader in law, with the same duties as any dealer.

Maximum buy price
£10,275
Gross profit at that price
£1,875

Max buy = retail − (retail × margin) − prep. The dashboard calculator does the same sum with the live retail figure for the exact car.

Step by step

  1. Know that you are a trader

    There is no number of cars that makes you a trader: if you buy cars mainly to sell them at a profit, you are one. That means selling roadworthy cars, describing them accurately (including mileage, write-off and finance history) and giving buyers their consumer rights, such as the short-term right to reject. Pretending to be a private seller is an offence.

    The Motor Ombudsman: when you count as a trader →

  2. List every cost before you buy

    Auction buyer’s fees, transport, servicing and MOT work, tyres, bodywork, valeting, advertising, warranty cover, motor trade insurance, the cost of the money tied up while the car sits in stock, and a reserve for the repair or comeback you did not expect. On a cheap car these can swallow most of the gap between trade and retail.

  3. Find out what the car will really sell for

    Look at what the same model, age and mileage is advertised for now and how long similar cars take to sell. A car that takes two months to sell needs a lower buy price than one that goes in two weeks.

    How to price a used car for retail →

  4. Work back to your maximum buy price

    Take the realistic retail price, subtract the profit you need and your preparation costs. That is the most you can pay. Use the calculator on this page, then stick to the number at the auction or on the driveway.

  5. Check the car’s history before you pay

    A car with outstanding finance can be taken back by the lender, and as a trader you do not get the protection a private buyer does. A write-off you missed costs you when you sell. A history check costs a few pounds and protects the whole margin.

    Vehicle history check →

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Frequently asked questions

How much profit can you make buying and selling cars?

There is no reliable average for small traders: it depends entirely on what you pay. The profit is the retail price minus the buy price, preparation, fees and running costs, so a car bought well can make a few hundred pounds or more, and a car bought badly can lose money once every cost is counted.

Do I need to register to sell cars from home?

There is no licence to sell cars, but you are running a business: register as self-employed or a company with HM Revenue and Customs, get motor trade insurance for the cars you drive, and if you move unregistered or untaxed vehicles on the road you will need trade plates. Check your local council’s rules if customers come to your home.

Can I sell cars privately to avoid the trader rules?

No. If you buy cars to sell them at a profit, advertising them as private sales is a misleading practice and a criminal offence under consumer protection law, and Trading Standards actively looks for it on online marketplaces.

Do I pay tax and VAT on cars I sell?

You pay Income Tax on your profit. As a sole trader you must register for Self Assessment once your trading income (sales, before costs) passes £1,000 in a tax year, which one car sale can do. VAT registration is compulsory once your taxable turnover passes £90,000 in a rolling 12 months; most used car traders then use the VAT margin scheme, where VAT is one sixth of the difference between the buy and sell price. Ask an accountant before you reach that point.

Where do car traders buy their stock?

Mostly from trade auctions (physical and online), dealer-to-dealer platforms, part-exchanges, and buying direct from private sellers. Each has fees and risks, so compare the all-in cost with what the car will retail for before you bid.

What do I need to know before buying my first car to sell?

What it will sell for, how long it will take to sell, what it needs doing, and its history. Get those four answers before you pay and most of the risk goes away.

Sources