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. 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. 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. In the credit union compensation for use of the loan (interest) is a source of compensation for savings. Credit unions appeared in England in the 19th century. In 1844 a group of workers from Rochdale established the first cooperative.