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. Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. 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. 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. U.S. credit unions have another significant difference from the credit cooperatives of farmers: the first have major proportion of short-term loans, the second - long and mostly in real estate. Credit Union - one of the most attractive financial institutions for the public being a non-profit alternative to banks.