Some credit unions are closed, serving only their members. However, the more and more popularitywin cooperatives of open type. 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. The main advantage of credit unions consists in transparency, controllability, governance for shareholders. 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.