Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. Taking a decision to join a credit union, citizens create an organization through which they participate in the shared savings by mutual crediting and joint (collective) use of personal savings. Unlike banks, in order to use the services of a credit union, you have to become its member, having written an application and having paid thus shares and membership fee. Credit union as a consumer cooperative operates on the principles of equality of all its members. Today, the World Council of Credit Unions is represented as members four regional confederations and twelve national associations. Corporate alliances are intermediaries between credit unions and financial markets.