Principles of cooperative democracy and interaction were adequate to the purposes for which people joined credit unions. The difference between credit unions and banks is clearly is apparent when comparing the structure of assets and liabilities of credit unions and banks. First central bank of credit unions appeared in 1876. Credit unions began to appear rapidly in many European countries. Share contributions are transferred to the credit union on the basis of membership for the whole stay of a shareholder as member of the credit union and are the basis of membership. All the members of the credit union, regardless of gender, ethnicity, religious and political beliefs, as well as the size of the monetary share have equal rights. 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. 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. Credit union as a consumer cooperative operates on the principles of equality of all its members.