Re: Arlean:
When you opened your bank account, BROU likely asked you for a "certificacion de ingresos" (document proving the funds you'll receive are legit, etc.).
When I opened mine, it was OK to provide only Purchase orders from my clients, but otherwise, it's needed to ask an Escribano publico to write such a document.
E.g. if you certificacion de ingresos mentions a monthly income of 3000 USD, it's better not to receive more than that on your account (otherwise the bank might have problems with the money laundering policies, etc.).
I'm just wondering what would happen if I don't give this document this year... (it has to be submitted annually)