a. Where to acquire Argentine pesos?
Exchange houses or banks are the best place to make a reliable, transparent and safe transaction, and the only place to change money legally. To change money it is obligatory not to forget to take the passport. In the airports there are exchange houses where it is possible to exchange money.
The government of the City of Buenos Aires warns that in certain areas of the center of the city, mainly in its pedestrian streets, it is common to find the so-called "arbolitos", people who offer the sale of foreign currency illegally. The risk that runs when wanting to change money in this way is very high, since the origin of such currencies is unknown.
Currency can be exchanged at Banco Nación (National Bank) - the other banks only let their clients exchange money.
Airport: It is possible to exchange money at the National Bank that is located inside the airport and has longer hours than regular banks (regular banks open only Monday-Friday from 10 am to 15 pm.) We suggest that when you land change at the airport.
It is important to keep in mind that to take taxis or to pay small things in Argentina you need to have cash, although you can pay with a card at restaurants and social events, usually it is not possible in small businesses.
Where to get information about the exchange rate?
To find out the value of Argentine currency each day ( this is important as it has fluctuated highly in the past year), you can visit exchange houses and banks or consult online through sites such as:
National bank´s official website Banco de la Nación Argentina. Banco de la Nación Argentina
b. Withdrawal of cash from ATMs:
VISA and MASTERCARD cards are usually accepted at almost all ATM terminals, but we recommend that you check with your bank before opting for the withdrawal route since it is common for banks to charge high fees each time cash is withdrawn. In Argentina banks charge a commission of approximately 10% of the transaction, there is usually an upper limit of extraction per day (3000- 5000 AR $ maximum) and in general the number of extractions is also limited.
Other cards are usually accepted but not in all ATMs, so looking for cash may take a while. It is recommended that you try to exchange euros or dollars at the airport or withdraw the least amount of money possible from an ATM.
c. Card payment
Large establishments, restaurants and commercial stores usually accept MASTER and VISA, although VISA is the most accepted. Payment with other cards may be more complicated. In addition, not all establishments accept payment by card and small premises such as kiosks, small shops or cafes, or for example taxis or remises, unless paid by internet with a card, are paid only in cash. That's why it's important to remember to change money at the airport or have cash when you leave.
Card payment can be advantageous when it is possible since it does not usually have a surcharge, although it is advisable to check with the bank in question before traveling.
For more information here is the official page of the Government of the City of Buenos Aires: Government of the City of Buenos Aires