eBay Selling — When Does a Hobby Become a Business?

The Accounted Business Team·3 March 2026·8 min read

eBay has been a part of British life for over two decades. What started as a quirky place to auction off your old VHS tapes has become a genuine marketplace where people build businesses, clear out their homes, and everything in between. And that is exactly where the confusion starts.

If you are selling bits and bobs from around the house, you are probably fine. But at what point does your casual selling tip over into something HMRC considers a business? And what happens when it does?

Let us untangle the whole thing.

The Basic Rule: Personal Items vs Trading

The fundamental question HMRC asks is simple: are you trading, or are you just selling personal possessions?

Selling personal possessions means getting rid of things you originally bought for your own use. Your old phone, that coat you never wear, the exercise bike gathering dust in the spare room. When you sell these, you are not running a business — you are just decluttering. There is no tax to pay (with one narrow exception we will get to shortly), and you do not need to tell HMRC.

Trading means you are buying items with the intention of selling them at a profit, or you are making things to sell, or you are running what is essentially a commercial operation. This is business income, and it is taxable.

The tricky part is that there is no single, bright-line test. HMRC looks at the overall picture, and there are several factors they consider.

The "Badges of Trade" — How HMRC Decides

HMRC uses a set of indicators known as the "badges of trade" to work out whether someone is trading. You do not need to tick every box — it is about the overall pattern. Here are the main ones:

1. Profit motive

Are you buying things specifically to sell them at a profit? If you are scouring charity shops for vintage clothing to resell at a markup, that looks a lot like trading. If you are selling your old winter coat because it does not fit any more, it does not.

2. Number of transactions

Selling a handful of items over the course of a year is one thing. Selling hundreds of items is another. A high volume of sales suggests you are running a business, not just having a clear-out.

3. Nature of the items

Are you selling a wide variety of personal belongings (old books, kitchen gadgets, clothes)? That looks like a house clearance. Are you selling 50 identical phone cases? That looks like trading.

4. Frequency and regularity

A one-off sale is clearly personal. But if you are listing new items every week, processing orders regularly, and building up stock, that is starting to look like a business.

5. Modifications or improvements

If you are buying items and repairing, refurbishing, or modifying them before selling, that adds value and suggests trading.

6. How the items were acquired

Did you buy the items specifically to resell? Were they bought in bulk or at wholesale? That points towards trading. If they were gifts, inherited items, or things you bought for personal use, they are more likely personal possessions.

7. How you sell

Having a dedicated eBay shop, using professional product photography, writing optimised listings, and offering customer service all point towards a business operation.

No single badge is decisive on its own. Someone who sells 200 personal items during a major house move is not trading. Someone who sells 50 carefully sourced vintage items over the year probably is.

The £1,000 Trading Allowance

If you are trading — even casually — you get a tax-free trading allowance of £1,000 per tax year. This is your gross income from trading (total sales), not your profit.

Under £1,000: No need to register with HMRC or file a return.
Over £1,000: You need to register as self-employed and file a Self Assessment tax return.

When you file, you can either deduct the £1,000 trading allowance from your income or deduct your actual expenses — whichever gives you a lower taxable profit.

For a full breakdown of the thresholds, see our guide on how much you can earn before telling HMRC.

What About Capital Gains Tax?

Here is the exception we mentioned earlier. If you sell a personal possession for more than £6,000, you may owe Capital Gains Tax (CGT) on the gain — that is, the difference between what you paid for it and what you sold it for.

This can come up with things like:

Antiques and collectibles
Jewellery
Art
Classic cars (though cars used as personal transport are usually exempt)

The CGT annual exempt amount for 2025/26 is £3,000, so you would only pay tax on gains above that. It is a fairly niche situation for most eBay sellers, but worth knowing about if you deal in higher-value items.

The Platform Reporting Rules

Since January 2024, eBay and other online marketplaces are required to report seller data to HMRC under the OECD's platform reporting rules. A platform must report your details if you either:

Make 30 or more sales in a calendar year, or
Earn more than €2,000 (roughly £1,700) in a calendar year

If you hit either threshold, eBay will share your name, address, date of birth, and total sales with HMRC.

This does not automatically mean you owe tax. If you are selling personal items, those sales are not taxable regardless of the amount. But it does mean HMRC knows about your activity and may ask questions if the numbers look like trading.

The practical takeaway: if you are genuinely trading and earning over £1,000, make sure you are registered and declaring it. HMRC is now in a much better position to cross-reference platform data with tax returns.

Real-World Examples

Let us look at a few scenarios to make this clearer.

Sarah — The declutterer

Sarah is having a massive clear-out before moving house. Over three months, she sells 80 items on eBay — old clothes, books, kitchen gadgets, and some furniture. She makes £2,400 in total. None of these items were bought to resell; they are all personal possessions she no longer needs.

Tax position: Sarah is not trading. She is selling personal items. No tax is owed, and she does not need to register with HMRC. eBay may report her sales data (she has exceeded 30 transactions), but that does not change her tax position.

James — The sneaker reseller

James buys limited-edition trainers at retail price and resells them on eBay at a markup. He does this regularly, making around £6,000 in sales over the year with a profit of about £2,500. He actively seeks out releases and manages his inventory.

Tax position: James is trading. He is buying items with the intention of reselling at a profit. He needs to register as self-employed and file a Self Assessment return. He can deduct his costs (purchase price of trainers, eBay fees, postage) from his income.

Emma — The vintage furniture flipper

Emma buys second-hand furniture, restores it, and sells it on eBay and at local markets. She earns about £8,000 a year in sales, with costs of around £3,000 for materials, paint, and tools.

Tax position: Emma is clearly trading — she is buying, adding value through restoration, and selling for profit. She needs to register as self-employed and file a Self Assessment. Her taxable profit would be around £5,000 (£8,000 minus £3,000 in expenses).

How eBay Fees and Costs Work

If you are trading on eBay, the platform fees are a legitimate business expense. For 2025/26, eBay's standard final value fee is around 12.8% plus 30p per order for most categories, though this varies.

Other costs you can deduct include:

Postage and packaging — Royal Mail, Evri, or whatever you use
Stock purchases — what you paid for items you are reselling
Materials — bubble wrap, tape, boxes, labels
PayPal or payment processing fees — if applicable
Storage — if you rent space for stock
Mileage — trips to source stock, post office runs (45p per mile for the first 10,000 miles)
Software — listing tools, bookkeeping software

Keeping track of all these expenses is essential. Penny, the AI bookkeeping assistant in Accounted, can help by automatically categorising your transactions — so you do not have to manually sort through hundreds of postage receipts at year end.

VAT — When Does It Apply?

For most casual or part-time eBay sellers, VAT is not something you need to worry about. You only need to register for VAT if your taxable turnover exceeds £90,000 in a rolling 12-month period.

If you are hitting numbers like that, you are running a serious operation and should probably be thinking about whether a limited company structure makes more sense. But for the vast majority of side-hustle eBay sellers, VAT is not on the table.

Tips for Staying on the Right Side of HMRC

Keep records of everything. Even if you are below the £1,000 trading allowance, keep notes of what you sold and for how much. If HMRC ever asks, you want to be able to show that you were not trading or that you were within the allowance.
Separate personal sales from business sales. If you are both decluttering and trading, keep clear records of which items were personal and which were bought to resell.
Track your expenses from day one. If you are trading, your expenses reduce your tax bill. Do not wait until January to start digging through receipts.
Understand the deadlines. You need to register as self-employed by 5 October after the end of the tax year you started trading. Your Self Assessment is due by 31 January.
Do not panic about platform reporting. Just because eBay reports your data does not mean you owe tax. It simply means HMRC has visibility of your sales.

The Bottom Line

The line between hobby and business on eBay is not always crystal clear, but the badges of trade give you a good framework for working it out. If you are simply selling your own stuff, you are almost certainly fine. If you are sourcing products to sell at a profit — even occasionally — you are probably trading.

Once you know where you stand, the practical steps are straightforward: register if you need to, keep records, claim your expenses, and file on time. It is far less daunting than it sounds.

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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