If it were really 'any' in the philosophical sense, cash would be outlawed. So no, it is not 'any', it is anywhere between more than a couple of hundred to a couple of thousands, depending on what the police or prosecutor feels is reasonable.
What is wrong with a (couple of) thousand euros?
> I know in Switzerland of money confiscated at border control
You are describing smuggling, I was talking about normal domestic use.
What is wrong with a (couple of) thousand euros?
> I know in Switzerland of money confiscated at border control
You are describing smuggling, I was talking about normal domestic use.