In recent decades, many credit unions began to resort to such form of service as Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. 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. Credit cooperatives and credit unions exist in many different forms. The main differences relate to the nature of the membership and the opening of a credit institution. 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.