Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. In the credit union compensation for use of the loan (interest) is a source of compensation for savings. Contributions from of shareholders in credit unions in no way can be considered as borrowed funds, they come from the shareholders and for the shareholders and can not be used to provide services to third parties. The right to use the services of the credit union have only its members. Credit union as a consumer cooperative operates on the principles of equality of all its members. Corporate alliances are intermediaries between credit unions and financial markets.