Do I need to register as self-employed to resell clothes in the UK?

If you have started selling clothes on Vinted, eBay or TikTok, you have probably wondered whether HMRC needs to know. The honest answer is: it depends on what you are selling and why. This guide explains the difference between clearing out your wardrobe and trading, when you need to register, and how to keep things simple from the start.

This is not tax advice. It is a plain-English overview of how the rules generally work at the time of writing. Everyone's situation is different, and rules change. For decisions about your own tax, check GOV.UK or speak to a qualified accountant.

Selling your own old clothes vs trading

The key question is whether you are getting rid of personal belongings or running a trade.

Selling your own unwanted items is generally not trading. If you clear out your wardrobe and sell clothes you bought to wear, you are usually not making a profit (most second-hand clothing sells for less than you paid), and there is normally nothing to declare.

Trading is different. If you buy items with the intention of selling them on for a profit, that is usually treated as trading, even if it is only a side hustle. HMRC looks at things like:

• Whether you buy items specifically to resell them
• How often you sell and whether there is a pattern
• Whether you improve, clean or repair items before selling
• Whether you are doing it to make a profit

Buying branded jumpers from charity shops every weekend to list on Vinted is a clear example of trading. Selling a few coats you no longer wear is not.

The £1,000 trading allowance

The trading allowance lets you earn up to £1,000 of gross trading income in a tax year without needing to tell HMRC or pay tax on it. The UK tax year runs from 6 April to 5 April the following year.

Two points catch people out:

1. It is based on income, not profit. The £1,000 is your total sales from trading before costs. If you sell £1,200 of stock that cost you £700, your income is £1,200, which is over the allowance, even though your profit is £500.
2. It covers all your trading income combined. If you resell clothes and also do another small side hustle, the income from both counts towards the same £1,000.

If your trading income goes over £1,000, you have two options on your tax return. You can deduct your actual expenses (stock, postage, packaging and so on) from your income, or you can deduct the £1,000 allowance instead. You choose whichever gives the better result, but not both. For most resellers buying stock, actual expenses will usually be higher than £1,000 once sales pick up.

Registering for Self Assessment

If your trading income is over £1,000 in a tax year, you will usually need to register for Self Assessment as a sole trader. You do this online through GOV.UK.

The deadline to register is 5 October after the end of the tax year in which you started trading. For example, if you started reselling in the 2026 to 2027 tax year (which ends on 5 April 2027), you would need to register by 5 October 2027.

Once registered, you file a tax return each year. For online returns, the filing deadline and the deadline to pay any tax owed are both normally 31 January after the end of the tax year. Registering late or filing late can lead to penalties, so it is worth sorting early rather than leaving it until the last minute.

Being registered as self-employed does not mean you will automatically owe a lot of tax. You pay tax on your profit, after allowable expenses, and only once your total income from all sources goes over your personal allowance. If you also have a job, your reselling profit is added to your employment income.

Platform reporting to HMRC

Since 2024, online platforms including Vinted, eBay and TikTok Shop have been required to collect seller information and share it with HMRC under reporting rules that apply across the UK and EU.

At the time of writing, platforms share your details with HMRC if, in a calendar year, you make 30 or more sales or earn about £1,700 (€2,000) or more. Platforms report on a calendar year basis, while UK tax works on the April to April tax year, so the figures will not always line up neatly.

This reporting does not mean you automatically owe tax. Someone selling 40 old items from their own wardrobe might be reported but still have nothing to declare, because they are not trading. Equally, being under the reporting threshold does not mean you are exempt. If you are trading and your income is over £1,000, you need to register whether a platform reports you or not.

What it does mean is that HMRC can see your sales activity. If you are trading, the sensible approach is to keep good records and declare your income properly.

Keeping records

Good records make tax simple, and they make you a better reseller because you can see what actually makes money.

For every item, keep a note of:

• Date bought, where from and what you paid
• Date sold, which platform and the sale price
• Platform fees and postage costs
• Packaging and other direct costs

Keep receipts where you can get them. Charity shops and car boots do not always give receipts, so a simple log with dates, places and amounts is your best evidence. A spreadsheet is enough for most beginners. You can also download sales reports from most platforms to check your figures.

Other costs you may be able to include as expenses include packaging, postage, a share of your phone bill, mileage for sourcing trips and subscriptions you use for the business. Check the GOV.UK guidance on allowable expenses before claiming anything you are unsure about.

You should normally keep your records for at least five years after the 31 January filing deadline for the relevant tax year.

Opening a separate business bank account

As a sole trader you are not legally required to have a business bank account, but having a separate account for reselling makes life much easier.

When all your sales come in and all your stock purchases go out through one account, your records are almost done for you. You can see exactly what you have made, you are less likely to miss expenses, and you avoid mixing personal spending with business costs. Several UK banks and app-based providers offer free or low-cost accounts for sole traders.

If you are learning reselling through The Flip Method, the final part of the course covers setting up and running reselling as a business, including record keeping and staying organised as you grow.

Putting it together

If you are only selling your own old clothes, you probably have nothing to worry about. If you are buying to resell, keep records from day one, watch your total sales against the £1,000 trading allowance, and register for Self Assessment by 5 October after the end of the tax year you start trading if you go over it. Platform reporting means HMRC can see your activity, so getting this right early is far easier than fixing it later.

To see how reselling fits alongside everything else, read our guides on how to start reselling clothing in the UK and Vinted vs eBay vs TikTok Live. And once more: this guide is general information, not tax advice. If your situation is anything other than straightforward, a qualified accountant is worth the cost.