Some credit unions are closed, serving only their members. However, the more and more popularitywin cooperatives of open type. Is necessary that all shareholders of the credit union were members of a single community, would know each other well enough to enjoy mutual trust. 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. 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). Unlike banks credit unions limit their activities to a closed circle of people.