Exactly, 'do business'.in UAE you pay CIT even as physical person if you do business as physical person
Trading your own money is very far from 'doing business', thats my point.
I understand what you're asking for but I'd be surprised if any of these jurisdictions have a simple one-pager saying "If you trade like X, Y, and Z conditions, you're a corporation." It's different rules coming together. The jurisdictions I have written down here are the usual tax hells: Spain, Canada, Australia, Germany.
I lived in ES for years and you never, by any chance, can get taxed as a corp for trading crypto. As a matter of fact its never considered PIT neither it holds as CGT there regardless of frequency. Dunno about the rest.
Essentially, it's like any activity. If you do enough of it personally, there's a risk it becomes a business activity. They look at things like whether it's a full-time activity, your sole/primary source of income, and so on. If your activities mimic those of a company, there is a non-zero risk you're taxed as a company. Buy and sell a couple of things on Ebay and no one bats an eye. Make it a multi-million dollar activity and the tax man cometh.
Sure, they can say whatever they want however I (using myself as an example) am not a separated entity from myself, and got no clients so this ruling wouldn't hold in court imo.
Didn't have a reason to look into this in much detail before, but it seems enforcement is mostly to extract social security contributions that wouldn't be due if you're paying just PIT/CGT.
This I can imagine for Spain tho, they make you pay 'autonomos' so you pay SS but this is not the same as CIT.