Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). Is necessary that all shareholders of the credit union were members of a single community, would know each other well enough to enjoy mutual trust. National Credit Union Insurance Fund was created by Congress in 1970 to insure deposits of credit union members in the amount of 100 thousand dollars. Income derived from the provision of services to its members, does not become the profit of credit union and is distributed among its members in proportion to their savings. International cooperation has been particularly felt since the days when Alphonse Desjardins began the activity on development of credit union movement in North America. Credit unions appeared in England in the 19th century. In 1844 a group of workers from Rochdale established the first cooperative. The value of credit unions is not limited to the role of the economic agent - they are an important element of the social structure and a factor of social stability and progress. Historically, credit unions have grown from the experience of credit cooperatives, but they took the experience of organizations of mutual aid of citizens by moving methods of social self-protection from labor and toward consumption. Unlike banks, in order to use the services of a credit union, you have to become its member, having written an application and having paid thus shares and membership fee.