Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. When organizing the credit union it is important that people know each other and know the extent to which each of them is trustworthy. 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. To reduce the risk of default on loans members of the credit union shall the joint guarantee. The main advantage of credit unions consists in transparency, controllability, governance for shareholders. Membership in the credit union forms responsible citizens and conscientious attitude to their obligations as a norm of behavior, identify the value of a decent man's reputation in the business turnover.