In the U.S., credit unions have a clear organizational structure. All credit unions belong to one or the other parent credit union (there are 35 of them in the U.S.). Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). In recent decades, many credit unions began to resort to such form of service as 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. The difference between credit unions and banks is clearly is apparent when comparing the structure of assets and liabilities of credit unions and banks. First central bank of credit unions appeared in 1876. Credit unions began to appear rapidly in many European countries. The main advantage of credit unions consists in transparency, controllability, governance for shareholders. The right to use the services of the credit union have only its members. To increase the number of credit unions in 1979 was adopted the corresponding law that serves as the legal basis of their activity.