Uruguay official currency is the Uruguayan Peso. Currency can be exchanged at all banks and casas de cambio (foreign exchange houses), and at most hotels, restaurants and shops. US dollars are the easiest currency to exchange and many restaurants, hotels and shops in the main cities may accept US dollars for payment. It is recommended you avoid accepting torn money as it may not be accepted again when you go to spend it.
Major credit cards (Visa, Master Card, Diners and American Express) are accepted, however, Visa is the most widely recognised.