Membership in the credit union is voluntary and is open to all citizens bound by with joint work or residence, who wished to create a credit union to use its services and are willing to take on relevant commitments and responsibilities. Some credit unions are closed, serving only their members. However, the more and more popularitywin cooperatives of open type. The difference between credit unions and banks is clearly is apparent when comparing the structure of assets and liabilities of credit unions and banks. 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. Membership in the credit union forms responsible citizens and conscientious attitude to their obligations as a norm of behavior, identify the value of a decent man's reputation in the business turnover. 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. In some cases, the initiators of credit unions can be trade unions, associations such as social support centers and others.