12-09-2025 6:56 PM
12-09-2025 7:34 PM
If its stuff you have bought to sell then yes you need to declare, you should also have 1 eBay account for your personal items and 2 for the business you are running as if HMRC do look into it they may want you paying for all the items you have sold. The chances of them looking into it are slim but not 0, nobody knows what they will look into but the general consensus is the more you sell the higher the chances you will be looked into. HMRC are obviously the last people you want looking through your finances for obvious reasons especially if you are not playing by the book.
12-09-2025 8:06 PM
Adding to @pegr-834437 the HMRC website has a link to a helpful tool:
Check if you need to tell HMRC about your income from online platforms - GOV.UK
12-09-2025 11:37 PM
You really need a business account for your ‘flips’ as that is trading. Once you have hit £1000 turnover (incl postage charge), you need to declare your trading to HMRC. If you keep your personal items on a private ID then those sales do not need to be declared as its your stuff (the exception being one item or a collection of items selling for £6000+ as you may need to pay capital gains tax on these items).