I think yes, might be wrong but it's logical (logic and taxes don't always mix, so I may be wrong).
You bought Bitcoin at $1 and sell at $8000 to pay for a house, you need to declare income of $7999 for each Bitcoin at the end of the year or else...
You bought Bitcoin at $1 and sell at $8000 to pay for a house, you need to declare income of $7999 for each Bitcoin at the end of the year or else...
If there is, it sucks because you're getting hit doubly for taxes on the item you're paying and the capital gains you'd be taking.
I'm almost certain that all countries have a catch all phrase to include any gains /income.