23/08/2026
HMRC already has your eBay and Vinted figures.
Since January 2024, online platforms have been legally required to report sellers to HMRC. The trigger is 30 sales or roughly £1,700 in a calendar year. Once you cross it, your data goes across automatically.
This catches people out because most of them are not doing anything wrong.
Selling your own used possessions is not trading, and is not taxable. Clearing out a wardrobe does not create a tax bill, however much it adds up to.
Buying things to sell on is different. That is trading, and it is taxable once you pass the £1,000 trading allowance.
The problem is that HMRC's data does not distinguish between the two. It shows volume, not intent. Which is why nudge letters go out to plenty of people who owe nothing at all.
If one arrives, the worst response is silence. A letter answered properly usually closes quietly. Ignored, it tends to escalate into a formal enquiry, and the penalty position gets considerably worse.
If you have been selling online and are not sure which side of the line you sit on, it is worth working out before a letter arrives rather than after.
Full guide: https://yourtaxhelp.co.uk/blog/hmrc-vinted-ebay-platform-reporting-uk-2026.html