Credit unions attract people in the first place by the opportunity to get cash loan (credit) - quickly and relatively inexpensively. Specialization of credit unions to provide financial services to its shareholders requires a particularly strict regulation of membership and acceptable activities. The difference between credit unions and banks is clearly is apparent when comparing the structure of assets and liabilities of credit unions and banks. When organizing the credit union it is important that people know each other and know the extent to which each of them is trustworthy. Members of credit unions place in credit unions usually free fund balances, ie those that remain after expenses devoted to education of children, the acquisition of new properties, additional pension benefits, etc. 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. The relationship between credit unions and shareholders arise from the membership and are not customer relationship. 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. Worldwide credit union movement is represented by regional confederations and national organizations within the World Council of Credit Unions.