Fund of Mutual Financial Aid of the credit union can be extended by sponsorship contributions from businesses, organizations, including on a returnable basis. Like the credit cooperatives, credit unions form associations of a higher level, which are called corporate credit unions. The number of shareholders of a credit union is limited and formalized by a list. Limit of the number is defined by the assembly and such assembly establishes the charter. At the organization of the credit union it is important that people know each other and know the extent to which each of them is trustworthy. The relationship between credit unions and shareholders arise from the membership and are not customer relationship. Credit cooperatives and credit unions exist in many different forms. The main differences relate to the nature of the membership and the opening of a credit institution. Credit unions historically formed as a special form of social support, initially taken upon themselves the social mission of protecting the interests of citizens in the field of financial services. Unlike banks credit unions limit their activities to a closed circle of people. Credit Union - one of the most attractive financial institutions for the public being a non-profit alternative to banks.