Fund of Mutual Financial Aid of the credit union can be extended by sponsorship contributions from businesses, organizations, including on a returnable basis. Historically, credit unions were preceded by widespread development of credit cooperation in many countries of Europe and America. Credit unions also differ from the traditional consumer cooperatives. Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. Income derived from the provision of services to its members, does not become the profit of credit union and is distributed among its members in proportion to their savings. Contributions from of shareholders in credit unions in no way can be considered as borrowed funds, they come from the shareholders and for the shareholders and can not be used to provide services to third parties. Credit unions base their activities on savings of shareholders, their shares and savings contributions, which make up the fund of mutual financial assistance - a source of cash loans to shareholders. Unlike banks credit unions limit their activities to a closed circle of people.