Historically, credit unions were preceded by widespread development of credit cooperation in many countries of Europe and America. Activity of the credit union consists of organizing mutual financial assistance by meeting the needs of its members in the services of saving and obtaining loans. Among the U.S. credit unions, there are three groups that differ in terms of assets, shareholders, and business services. Until the 70's there was a proliferation of the U.S. credit unions due to the increase of their number and the number of shareholders, although it must be acknowledged that there was also and a qualitative growth. Contributions from of shareholders in credit unions in no way can be considered as borrowed funds, they come from the shareholders and for the shareholders and can not be used to provide services to third parties. The supreme body of the World Council of Credit Unions is the Assembly, which elects the president and the board of directors of WOCCU. The right to use the services of the credit union have only its members. The specifics of credit unions and, in some sense, their uniqueness lies in the fact that they work not for profit and do not appropriate profit.