An Internal Control System provides greater control and security to the optimal utilization of the resources of the company and in this way, it looks for the greater effectiveness and efficiency in the operations which it is performed. If an organization of medium size does not adopt a sound Internal Control System, exclusively in the area of Cash and Bank, the Treasury department would suffer very soon and remarkably negative effects that this absence produces. The reasons why they are not carried out in many organizations can be many; among them: the fear of change, insecurity, bad experiences, among others. The feasibility to implement a system of Internal Control is possible; always and when taken into account the aspects necessary in an organization. The retailer MVG Combustibles SAC, will be studied for the present work, where we will determine if the proposal for implementation of...