Any question touching on investing or taxes need to reflect a country to properly answer. Is it possible to require a country at the time users first sign up? Else, we are waiting for this info and can't answer until the OP comes back.
Note - I am not asking for a mandatory question-tagging. This request is that when a new user signs up, they should include their country. I am noticing that the new users don't include this, and we are often waiting for their update before we can address their question.