Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). Share contributions are transferred to the credit union on the basis of membership for the whole stay of a shareholder as member of the credit union and are the basis of membership. The main activities of credit unions, aimed at the organization of mutual aid and social support of citizens is not intended to profit. Credit Union - a non-profit financial institution specialized in mutual financial assistance by providing savings and credit services to their members. Worldwide credit union movement is represented by regional confederations and national organizations within the World Council of Credit Unions.