You can take both EUR and US dollars to Argentina. Euros and dollars in Argentina can be exchanged in specialized currency bureaus or in a bank. Both banks and exchange offices in Argentina work 5 days a week with weekends on Saturday and Sunday. Also, the currency can be exchanged in large shopping centers and hotels, although the course in them will not be as profitable. All major stores, hotels and restaurants in large cities accept payment for cards of popular payment systems (American Express, Visa, Master Card and Eurocard), especially if they are open in American currency. But in the provinces it's almost impossible to pay them off. If you have traveler's checks (recommended in US dollars), take care of their exchange in Buenos Aires, there can be difficulties in the outback with their cashing out. In addition, a rather high commission is taken for the cashing of traveler's checks in Argentina. Import and export of national and foreign currencies is not limited, only amounts over $ 10 000 must be declared.

It's better to take dollars with you.

However, EUR will be exchanged without any problems.