Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). Some credit unions are closed, serving only their members. However, the more and more popularitywin cooperatives of open type. As of the January 1, 2012 the national associations and confederations unite more than 196 million members participating in the 51,013 credit unions in 100 countries. To increase the number of credit unions in 1979 was adopted the corresponding law that serves as the legal basis of their activity. Unlike banks credit unions limit their activities to a closed circle of people. Credit union as a consumer cooperative operates on the principles of equality of all its members. Corporate alliances are intermediaries between credit unions and financial markets.