Fund of Mutual Financial Aid of the credit union can be extended by sponsorship contributions from businesses, organizations, including on a returnable basis. The relationship of shareholders with credit union are not client-based, they are co-operative, based on different principles and standards, in particular, on the principles of the law of obligations. Initially, the target groups of credit unions were farmers (Raiffeisen), and now they include both individuals (credit unions), and organizations. 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. In some cases, the initiators of credit unions can be trade unions, associations such as social support centers and others. Standards by which credit unions build their work do not coincide with the standards and regulations of consumer cooperation of the usual type. Credit Union - a non-profit financial institution specialized in mutual financial assistance by providing savings and credit services to their members. A potential new member of a credit union must submit a recommendation of shareholders in which the referee becomes a warrant of a future member of the credit union.