I've found information on this to be largely inconclusive and thus move my query here.
So: I am an artist who has a customer to have mural painting done for their premises (a business), and it would probably do me well to have an ABN for this gig. I intend to expand this as a business as far as I can, but naturally I have no way of actually knowing how much work I will get after this first client. Would I be out of line or perhaps even fined somehow if I did not manage to get more work?With the intention and first step being there, but absolutely no guarantee, is that enough?