Fund of Mutual Financial Aid of the credit union can be extended by sponsorship contributions from businesses, organizations, including on a returnable basis. Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). Credit unions encourage savings of citizens, setting compensation payments (interest) on savings and provide from these savings loans to their members. In the U.S. credit unions timely and full repayment of loans is a common phenomenon. Unpaid and delinquent loans are not more than 3% of their amount. 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. 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. The main activities of credit unions, aimed at the organization of mutual aid and social support of citizens is not intended to profit. 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. Credit union as a consumer cooperative operates on the principles of equality of all its members.