Activity of the credit union consists of organizing mutual financial assistance by meeting the needs of its members in the services of saving and obtaining loans. Credit unions attract people in the first place by the opportunity to get cash loan (credit) - quickly and relatively inexpensively. Among the U.S. credit unions, there are three groups that differ in terms of assets, shareholders, and business services. To reduce the risk of default on loans members of the credit union shall the joint guarantee. 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. Important specifics of creating a credit union - an initiative order of organization: people do not receive any instructions, orders or regulations, the unification into a credit union occurs by their will and decision. 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. The specifics of credit unions and, in some sense, their uniqueness lies in the fact that they work not for profit and do not appropriate profit. Unlike banks credit unions limit their activities to a closed circle of people.