Classic Car Restorers — Hobby vs Business for Tax

The Accounted Business Team·6 March 2026·8 min read

Few hobbies are as absorbing — or as expensive — as classic car restoration. Stripping a neglected MG down to bare metal, rebuilding an engine in a garage, and eventually rolling out a beautifully restored car is deeply satisfying work. But when you sell that restored car for a tidy profit, a question arises: does HMRC want a share?

The answer depends on whether your restoration activity is a hobby or a business. And, as with many things in tax, the line between the two is not always obvious. This guide explains how HMRC views classic car restoration, when you need to pay tax, and what expenses you can claim if you are trading.

The Hobby vs Business Test

HMRC does not have a simple checklist that says "restore X number of cars and you are a business." Instead, they consider the overall picture. The key factors are known as the "badges of trade," and they include:

Frequency of Transactions

If you restore one car over three years for your own enjoyment and then sell it, that looks like a hobby. If you buy, restore, and sell several cars a year, that looks like trading.

Profit Motive

Are you restoring cars with the primary intention of making money? A hobbyist might restore a car they love and happen to sell it later. A trader buys with the deliberate intention of selling at a profit.

Method of Acquisition

Did you seek out the car specifically because it was a good restoration project with profit potential? Traders tend to look for undervalued cars with clear profit margins. Hobbyists tend to buy cars they personally want to own.

Period of Ownership

A trader typically turns cars around relatively quickly — buying, restoring, and selling within months or a year or two. A hobbyist might keep a car for years before deciding to sell.

Modifications and Improvements

A trader makes modifications specifically to increase resale value. A hobbyist makes modifications for personal satisfaction, which may or may not increase the car's value.

Number of Similar Transactions

One sale is rarely a trade. Multiple sales of restored cars over a period of years increasingly look like a business pattern.

Organisation and Business-Like Conduct

Do you have a workshop, a website, a business name, or advertising? Do you issue invoices? The more organised and commercial your activity looks, the more likely HMRC will consider it a trade.

No single factor is decisive — it is the overall picture that matters. Two restorers doing apparently similar work might be classified differently based on their circumstances and intent.

For a broader look at the hobby vs business question, see our guide on eBay selling: hobby vs business, which covers the same principles in a different context.

Capital Gains Tax — The Hobby Route

If HMRC accepts that your classic car restoration is a hobby, any profit from selling a restored car may be subject to Capital Gains Tax (CGT) rather than income tax. However, there is an important exemption:

Cars are classified as wasting assets (assets with a predictable useful life of 50 years or less), and wasting assets that are also tangible moveable property are exempt from CGT. This means that in most cases, a hobbyist selling a restored classic car pays no tax at all on the profit.

This exemption is one reason HMRC scrutinises classic car restorations carefully. The tax difference between a hobby and a business can be substantial — a hobbyist pays nothing, while a trader pays income tax and National Insurance on their profits.

Income Tax — The Business Route

If HMRC determines you are trading, your restoration profits are subject to income tax and National Insurance as self-employment income. You would need to:

Register as self-employed with HMRC.
File an annual Self Assessment tax return.
Pay income tax on your profits (income minus expenses) at the applicable rate — the personal allowance is £12,570, and the basic rate is 20%.
Pay Class 2 and Class 4 National Insurance on your profits.

The good news is that as a trader, you can deduct all your business expenses from your income, which can significantly reduce your tax bill.

Allowable Expenses for Classic Car Restorers

If you are trading, the following expenses are typically deductible:

Vehicle and Parts Costs

Purchase price of cars — The cost of buying the car is your primary cost of sale.
Parts and components — Engines, gearboxes, body panels, chrome trim, interior materials, tyres, brakes, electrical components, and every nut and bolt.
Specialist services — Chrome plating, powder coating, sandblasting, upholstery, paint spraying, and engine machining that you outsource.

Workshop Costs

Workshop rent — If you rent a unit, lock-up, or industrial space.
Use of home/garage — If you work from home, the business proportion of household costs (electricity, gas, council tax, insurance) is claimable. See our expenses guide for calculation methods.
Electricity and heating — Running power tools, welding equipment, and heating a workshop.
Workshop insurance — Contents, public liability, and business premises insurance.

Tools and Equipment

Hand tools — Spanners, sockets, screwdrivers, hammers, and specialist tools.
Power tools — Angle grinders, drills, welding equipment, compressors, and spray guns.
Workshop equipment — Car lifts, ramps, engine hoists, workbenches, and parts washers.
Capital items — Larger equipment purchases can be claimed through capital allowances.

Transport and Travel

Vehicle recovery and transport — Towing or trailering cars to and from your workshop.
Travel to suppliers — Trips to parts dealers, salvage yards, and auto jumbles. Claim at the HMRC approved mileage rate of 45p per mile. See our mileage guide.
Trailer or transporter costs — Purchase, hire, insurance, and maintenance.

Marketing and Sales

Photography — Professional photos for listings and social media.
Advertising — Online classifieds, specialist magazines, social media ads, and car show entries.
Website — Domain, hosting, and design costs.
Car show and event fees — Entry fees and display costs at classic car shows.

Other Business Costs

Insurance — Motor trade insurance, public liability, and stock insurance.
Training — Welding courses, automotive restoration courses, and specialist skills training.
MOT and testing — The cost of MOTs, emissions tests, and pre-sale inspections.
Accounting and bookkeeping — Accountancy fees and software like Accounted.
Phone and broadband — The business proportion.

Record Keeping — Especially Important Here

Because HMRC may challenge your classification as either a hobby or a business, meticulous record keeping is vital regardless of which side of the line you fall on.

If you are a hobbyist, keep records that support your position: evidence that you bought the car for personal enjoyment, records of the time and money you invested, and documentation showing you did not actively market the car or seek to flip it quickly.

If you are a trader, keep records of everything: purchase receipts, parts invoices, subcontractor bills, mileage logs, time spent on each project, and sale records. This is standard good practice and also protects you in the event of an HMRC enquiry.

With Accounted, you can photograph receipts as you go — even in the workshop with oily hands. Penny will categorise your expenses and keep your records organised, so you always have a clear picture of where each project stands financially. It is far better than stuffing receipts into a coffee tin on the workshop bench.

Multiple Cars and the £1,000 Trading Allowance

If you restore and sell just one or two cars and your total trading income is under £1,000, the trading allowance means you do not need to register or file. But for most restorers who are genuinely trading, a single sale will comfortably exceed this.

Remember, the £1,000 is based on your gross sales, not your profit. A car sold for £15,000 (even if you spent £14,000 on it) gives you gross income of £15,000 — well above the allowance.

VAT Considerations

The VAT registration threshold is £90,000. If your turnover from buying and selling restored cars exceeds this in any 12-month period, you must register for VAT.

There is a specific VAT scheme for second-hand goods — the VAT Margin Scheme — which can be very beneficial for classic car traders. Under this scheme, you only charge VAT on the profit margin (the difference between your purchase price and sale price), not on the full sale price. This can significantly reduce the VAT you owe.

For example, if you buy a car for £5,000 and sell the restored car for £20,000, under the margin scheme you would charge VAT only on the £15,000 margin (£2,500 at 20%), rather than on the full £20,000 (£3,333). To use the scheme, you need proper purchase records showing the price you paid.

Our VAT registration threshold guide covers the basics of registration.

What If HMRC Disagrees With Your Classification?

If you treat your restoration as a hobby but HMRC believes it is a trade, they can open an enquiry and reclassify your activity. This could result in:

Income tax and National Insurance on your profits for the years in question.
Interest on late-paid tax.
Penalties if HMRC considers the failure to register as careless or deliberate.

Conversely, if you register as a trader but HMRC considers your activity a hobby, they might deny your expense claims (though this scenario is less common — HMRC usually prefers to classify activities as trading, since that generates tax revenue).

The best protection is clear, honest record keeping and a reasonable, consistent position.

Practical Tips for Classic Car Restorers

Be honest about your intent — If you are buying cars to make money, accept that you are trading and set up properly.
Keep detailed project records — Hours worked, costs incurred, and the rationale for each purchase.
Separate business and personal finances — A dedicated bank account makes everything cleaner.
Set aside money for tax — If you sell a car for a good profit, remember that 20-30% of that profit may go to HMRC.
Get specialist advice — Classic car tax can be complex, particularly around the hobby/business boundary and VAT margin scheme. A good accountant who understands the sector is worth their fee.

For a broader look at sole trader tax, see our guide on how much tax you will pay as a sole trader.

Accounted helps UK sole traders stay on top of their bookkeeping and tax. Start your free 30-day trial at getaccounted.co.uk.

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