The number of shareholders of a credit union is limited and formalized by a list. Limit of the number is defined by the assembly and such assembly establishes the charter. Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. Income received by the credit union shall be distributed among the shareholders or spent for the depreciation of services, that is, are the most effective means of meeting the needs of shareholders. Typically new members of the credit union become citizens having suretyship or recommendations from their friends - members of the credit union. 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. Credit Union - a non-profit financial institution specialized in mutual financial assistance by providing savings and credit services to their members. Credit unions historically formed as a special form of social support, initially taken upon themselves the social mission of protecting the interests of citizens in the field of financial services. Credit Union - one of the most attractive financial institutions for the public being a non-profit alternative to banks.