Nearly 4 million UK sellers were reported to HMRC last year alone.
But here's what most headlines don't tell you: being reported is not the same as owing tax.
This guide gets you a clear, honest answer in the first five minutes - not after 40 pages of general tax theory.
Why this and not a forum thread or a 15-minute YouTube video?
Because those give you fragments. This gives you the whole path from "am I affected?" to "here's exactly what to do next" with every figure checked against official HMRC guidance, in one place, that you can come back to at 11pm when you're panicking about it.
One sentence to hold onto while you read the whole book:
Being reported to HMRC by a platform is not the same thing as owing tax.
Most of the fear around this topic comes from those two things getting blurred together. They're separate. This book untangles them.