HMRC and Online Selling: What UK Sellers Actually Need to Know

Every January, the same panic sweeps through UK selling groups: “Vinted is reporting me to HMRC!” “eBay wants my National Insurance number!” Most of that panic is misplaced - but the rules are real, and it’s worth understanding exactly what changed and what it means for you.

A quick note before we start: this is general information, not tax advice. For your specific situation, check GOV.UK (opens in a new tab) or speak to an accountant.

What actually changed

Since January 2024, digital platforms - eBay, Vinted, Depop, Etsy, Airbnb and the rest - have been required to collect information about their sellers and report it to HMRC once a year. It’s a UK implementation of OECD-wide rules, and the first reports reached HMRC in early 2025.

A platform reports you if, in a calendar year, you have:

30 or more sales, or
roughly £1,700 (€2,000) or more in total sales

Below both thresholds, the platform generally doesn’t report you at all. Above either one, it passes your details and your sales totals to HMRC, and you’ll usually get a copy of what was shared.

The most important sentence in this article

The reporting rules did not change what is taxable. They only changed what HMRC can see.

Being reported by a platform does not mean you owe tax. Plenty of people sail past 30 sales a year clearing out a loft and owe HMRC nothing. What matters is why you’re selling.

Clearing out vs trading

Selling your own possessions - things you bought for yourself and no longer want - is generally not taxable. Your old clothes, your kids’ outgrown toys, the exercise bike that became a clothes rail: selling these almost always means selling at a loss against what you paid, and it isn’t income. This covers the vast majority of people on Vinted and eBay.

Trading is different. You’re likely trading if you:

Buy things in order to resell them (car boots, clearance, wholesale)
Make things to sell (crafts, prints, upcycled furniture)
Sell in a regular, organised, business-like way with a profit motive

Trading income is taxable - but even then, the £1,000 trading allowance means your first £1,000 of gross trading income in a tax year is tax-free and doesn’t need reporting. Earn more than that and you’ll likely need to register for Self Assessment and declare it.

One more edge case: valuable single items

Selling a personal possession for more than £6,000 (jewellery, art, an instrument) can trigger Capital Gains Tax on the profit. Everyday clearing out never gets near this, but if you’re selling granny’s painting, look up the chattels rules first.

What sensible sellers do

Know which side of the line you’re on. Be honest with yourself: are you decluttering, or running a small business? The answer usually isn’t ambiguous.
Keep light records. A simple spreadsheet - date, item, sold price, what you originally paid if you know it - takes seconds per sale and makes any future HMRC letter a non-event.
If you’re trading past £1,000, register. Self Assessment is tedious but straightforward, and declaring beats explaining.
Don’t split sales across platforms to duck reporting. The thresholds apply per platform, but HMRC receives reports from all of them and can join the dots. If you’re not trading you have nothing to hide anyway.

The takeaway

The reporting rules are about visibility, not new taxes. If you’re clearing out your own things, sell freely - the thresholds are reporting triggers, not tax bills. If you’re genuinely trading, the rules were always there; the £1,000 allowance is your buffer, and past it, Self Assessment is the price of doing business.

Either way, the worst response is selling less out of fear. The second-worst is keeping no records.

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