Principles of cooperative democracy and interaction were adequate to the purposes for which people joined credit unions. 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. Members of credit unions place in credit unions usually free fund balances, ie those that remain after expenses devoted to education of children, the acquisition of new properties, additional pension benefits, etc. To reduce the risk of default on loans members of the credit union shall the joint guarantee. 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. Until the mid-XX century, credit unions in the United States had little assets that did not exceed, as a rule, 100 thousand dollars Initially, the target groups of credit unions were farmers (Raiffeisen), and now they include both individuals (credit unions), and organizations. In the case of default the shareholder - individual will respond with its property and, in addition, is jointly and severally liable with the credit union's commitments. Shareholders in corporate organizations are basic credit unions, besides the same union can be a shareholder of several corporate organizations. Corporate alliances are intermediaries between credit unions and financial markets.