Spain’s official currency is Euro since 2002.  The Euro is an official currency of other twelve European countries inclusive of neighboring countries of Portugal and France besides Spain. The major benefit of using universal currency is that there is no need of exchanging currency each time you travel to other European countries.

And the disadvantage of using it is that there are only limited places for exchanging the foreign currency in the country of Spain. If you are travelling to a country that makes use of different currency, it still becomes possible to exchange local currency in Spain.
 
Changing currency in Spain is a not a troubling task. Many resorts in Spain are aware of the fact that visitors come from other countries and so they make use of different currencies. So, there is always somebody available on the resort to exchange the currency into Euros. One of the chief advantages of exchanging currency is that it is relatively easier as compared to exchange offices. The currency exchange office asks for the identification proof & completion of forms, thus making the whole process easier. Another chief benefit of exchanging currency in Spain is that they open later in the evening. High exchange commissioning rate is another good reason for exchanging currencies in the offices in Spain.
 
But as far as banks are concerned, they are believed to be a good place to exchange currency if you are looking for good exchange rates. The other benefit is that banks are easily found in the country in Spain. On the contrary, the disadvantage of using it is that the travelers are required to show the proof of their identification and thus, fill the forms One may also not found the English speaking employee that may assist you.