The Costa Rican currency (dinero or plata) is called colones. It is a simple metric system so it is easy to use the bills and coins you will receive. Since finding colones outside Costa Rica can be difficult it is wiser to exchange your currency once you arrive in the country.
US dollars are also acceptable in most places, however, in San Gerardo, you will need colones to buy smaller items or use services in many establishments.
NOTE: due to the introduction of many fraudulent US$100 bills these are generally not accepted in Costa Rica.
Travellers cheques or other currencies can be exchanged in the banks in San Isidro (nearest town). Have your passport with you to verify your identity. ATM machines are also easily accessible in San Isidro – not all machines accept all bank cards, so be prepared to try more than one.
At time of posting there are no ATM machines in San Gerardo. You can exchange some US dollars at the pulperia (general store) in the plaza.
Approximate exchange rate:
Canadian dollar = 500 colones
US dollar = 510 colones
Euro = 710 colones
UK pound = 800 colones
Australian dollar = 500 colones
Check the latest exchange rates with XE Currency Converter.