Principles of cooperative democracy and interaction were adequate to the purposes for which people joined credit unions. Credit unions also differ from the traditional consumer cooperatives. Credit union services are available only to its shareholders. 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. Shareholders in corporate organizations are basic credit unions, besides the same union can be a shareholder of several corporate organizations. 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. Credit unions encourage the proper use of shareholders savings, developing social programs (education, health, recreation, housing, etc.). Credit union as a consumer cooperative operates on the principles of equality of all its members. A potential new member of a credit union must submit a recommendation of shareholders in which the referee becomes a warrant of a future member of the credit union.