The Banco de la Nación is the official Peruvian government bank realizing financial transactions in the public and private sectors, as well as at both domestic and international levels. It is an entity belonging to the Peruvian Ministry of Economy and Finance.
At the agencies of this Peruvian bank you have to pay all official charges and fees.
You will find Banco de la Nacion agencies in all public buildings (where you usually have to pay fees for the requested services) and in all districts of Lima and Callao. A list of all their agencies can be found on their website under "Agencias Lima Metropolitana".