Corporate credit unions are united on a cooperative basis in the Central Credit Union (US Central Credit Union). Borrowing rate for the credit union is a source of income to cover the administrative costs. All excess funds are returned to members in the form of dividends on savings. In recent decades, many credit unions began to resort to such form of service as Like the credit cooperatives, credit unions form associations of a higher level, which are called corporate credit unions. To reduce the risk of default on loans members of the credit union shall the joint guarantee. The main advantage of credit unions consists in transparency, controllability, governance for shareholders. Credit unions are financial institutions, financial cooperatives of citizens, and in this capacity they are above all associations of people, not unification of capitals, which is typical, for example, for public companies. Today, the World Council of Credit Unions is represented as members four regional confederations and twelve national associations.