GerhardAce
The personal T&Cs don't contain a definition of what commercial purposes are and the definition in general law definitely will differ in different jurisdictions. For example in Austria having a single rental property for example in most cases doesn't fall under this. Just from the transactions they'll also not be able to tell the specifics to decide on the legal definition either.
Do we know how Bunq interprets this or do we need to wait until the account gets blocked to find out?