Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). In 1908. the spread of credit unions has reached the United States. In 1935 President Roosevelt signed the state Charter on credit unions, which became a law. Principles of cooperative democracy and interaction were adequate to the purposes for which people joined credit unions. In the U.S. credit unions timely and full repayment of loans is a common phenomenon. Unpaid and delinquent loans are not more than 3% of their amount. 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. Credit unions base their activities on savings of shareholders, their shares and savings contributions, which make up the fund of mutual financial assistance - a source of cash loans to shareholders. Today, the World Council of Credit Unions is represented as members four regional confederations and twelve national associations.