Fund of Mutual Financial Aid of the credit union can be extended by sponsorship contributions from businesses, organizations, including on a returnable basis. Like any financial institution, credit unions have the financial resources. 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. Credit union is created by a group of members who pursue a common interest. Agreeing to make regular contributions, they create a fund from which can borrow money for investments and replenishment of working capital at favorable interest rates. Credit union promotes the effective conservation of personal funds of its members, giving them the loans from the funds of the credit union, as well as the sharing of savings in education, housing, health care and other programs of social support and social development of its members. Among the U.S. credit unions, there are three groups that differ in terms of assets, shareholders, and business services. Credit unions of the open type are still controlled by their members, but at the same time provide services to people who are not its members (external customers). International cooperation has been particularly felt since the days when Alphonse Desjardins began the activity on development of credit union movement in North America. Worldwide credit union movement is represented by regional confederations and national organizations within the World Council of Credit Unions.