Historically, credit unions were preceded by widespread development of credit cooperation in many countries of Europe and America. Credit unions perform the function of social protection in a vital for people sphere of financial services. They care about improving the financial literacy of the population, are working on the formation of their members and their employees. Cooperation between credit unions, how they would not have been named, took place always, from the moment when the movement moved outside one credit union. To reduce the risk of default on loans members of the credit union shall the joint guarantee. Income derived from the provision of services to its members, does not become the profit of credit union and is distributed among its members in proportion to their savings. The relationship of shareholders with credit union are not client-based, they are co-operative, based on different principles and standards, in particular, on the principles of the law of obligations. Credit unions are competitors of savings institutions, adding interest on deposits of members. This applies to the shares, as well as to additional funds transferred to the account in the credit union. The value of credit unions is not limited to the role of the economic agent - they are an important element of the social structure and a factor of social stability and progress. The right to use the services of the credit union have only its members.