Membership in the credit union is voluntary and is open to all citizens bound by with joint work or residence, who wished to create a credit union to use its services and are willing to take on relevant commitments and responsibilities. Some credit unions are closed, serving only their members. However, the more and more popularitywin cooperatives of open type. Among the U.S. credit unions, there are three groups that differ in terms of assets, shareholders, and business services. Since the early 80's started the process of consolidation of credit unions, leading to a decrease in their number with a simultaneous increase in the total number of members. Until the mid-XX century, credit unions in the United States had little assets that did not exceed, as a rule, 100 thousand dollars 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. In some cases, the initiators of credit unions can be trade unions, associations such as social support centers and others. The supreme body of the World Council of Credit Unions is the Assembly, which elects the president and the board of directors of WOCCU. Corporate alliances are intermediaries between credit unions and financial markets.