When organizing the credit union it is important that people know each other and know the extent to which each of them is trustworthy. 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. Credit unions appeared in England in the 19th century. In 1844 a group of workers from Rochdale established the first cooperative. U.S. credit unions have another significant difference from the credit cooperatives of farmers: the first have major proportion of short-term loans, the second - long and mostly in real estate.