Historically, credit unions were preceded by widespread development of credit cooperation in many countries of Europe and America. Like any financial institution, credit unions have the financial resources. Some credit unions are closed, serving only their members. However, the more and more popularitywin cooperatives of open type. Credit union services are available only to its shareholders. Among the U.S. credit unions, there are three groups that differ in terms of assets, shareholders, and business services. 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. 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. A credit union on its own initiative order is created by citizens (individuals) to solve their financial problems that they could not solve in other financial institutions.