Fund of Mutual Financial Aid of the credit union can be extended by sponsorship contributions from businesses, organizations, including on a returnable basis. Typically, donor contributions to the credit unions are targeted and used in the same statutory requirements and restrictions as the Mutual Financial Aid fund as a whole. In recent decades, many credit unions began to resort to such form of service as Some credit unions are closed, serving only their members. However, the more and more popularitywin cooperatives of open type. First central bank of credit unions appeared in 1876. Credit unions began to appear rapidly in many European countries. 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). The value of credit unions is not limited to the role of the economic agent - they are an important element of the social structure and a factor of social stability and progress. Credit union as a consumer cooperative operates on the principles of equality of all its members.