Fund of Mutual Financial Aid of the credit union can be extended by sponsorship contributions from businesses, organizations, including on a returnable basis. Some credit unions are closed, serving only their members. However, the more and more popularitywin cooperatives of open type. Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. Credit union promotes the effective conservation of personal funds of its members, giving them the loans from the funds of the credit union, as well as the sharing of savings in education, housing, health care and other programs of social support and social development of its members. First central bank of credit unions appeared in 1876. Credit unions began to appear rapidly in many European countries. All the members of the credit union, regardless of gender, ethnicity, religious and political beliefs, as well as the size of the monetary share have equal rights. Credit unions of the open type are still controlled by their members, but at the same time provide services to people who are not its members (external customers). The main activities of credit unions, aimed at the organization of mutual aid and social support of citizens is not intended to profit. Taking a decision to join a credit union, citizens create an organization through which they participate in the shared savings by mutual crediting and joint (collective) use of personal savings. Standards by which credit unions build their work do not coincide with the standards and regulations of consumer cooperation of the usual type.