Hi Clare,
I found this info on the net, I hope it may help. Also, in order to save you some research time I pasted a link to a business directory for expatriates where you can find BA banks with headquaters abroad.
http://www.indextar.com/ba/buenos-aires-finance-banks-c253
How to open a bank account in Argentina
There are no general guidelines for opening a bank account in
Argentina. Every bank appears to have its own requirements for
opening an account.
Opening a savings account (cuenta de ahorros) or current (US:
checking) account (cuenta corriente) also tends to make a difference
as to what is required. The best advice is contact several different
banks and ask them.
We spoke to several banks in Buenos Aires, and besides the necessity
to show a valid passport and proof of domicile, requirements varied
from minimum deposits of AR$ 1,000 to employment contracts ranging
from 6 months to 1 year.
As an example, Banco La Nación has the following requirements for
foreigners to open an account:
Bring your original Identification Document and a copy
Proof of domicile (gas bill, telephone bill, etc.)
Your CUIL (Código Único de Identificación Laboral)/ CUIT (Código
Único de Identificación Tributaria) / CDI (Carnet de Identidad)\
CUIL is a number given to every employee upon starting to work for
an employer. CUIT is a personal number you need to pay taxes. CDI is
your Identification Card number.
Initial deposit. To open an account in pesos, this should be at
least AR$10. For a dollar account, the initial deposit is US$ 500.
Annual maintenance costs of the account are AR$ 6 for a peso
account, and US$ 2 for a dollar account. The costs include a Maestro
debit card.
AccountsIn Argentina bank accounts can be opened in Argentina pesos
(AR$) and in US Dollars (US$). The costs of these accounts usually
vary. Another distinction is opening a savings account and current
(US: checking) account. A current account is used for daily
payments, whereas a savings account is used to save money.