Most modern credit unions represent specialized consumer cooperatives of citizens associated by the principle of social community: place of work, place of residence, profession, or any other shared interest. Representative organization, leading the coordination work in the field of development of both global and national credit union movement is the World Council of Credit Unions (WOCCU) established in 1971 (headquartered in Madison, USA). Credit unions encourage savings of citizens, setting compensation payments (interest) on savings and provide from these savings loans to their members. Until the 70's there was a proliferation of the U.S. credit unions due to the increase of their number and the number of shareholders, although it must be acknowledged that there was also and a qualitative growth. Over 30% of the assets of credit unions are investments in government securities, certificates of deposit of banks and savings loan associations, as well as in the parent credit unions, and other risk-free investments. 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. Until the mid-XX century, credit unions in the United States had little assets that did not exceed, as a rule, 100 thousand dollars The relationship between credit unions and shareholders arise from the membership and are not customer relationship. Credit unions encourage the proper use of shareholders savings, developing social programs (education, health, recreation, housing, etc.). Corporate alliances are intermediaries between credit unions and financial markets.