Like any financial institution, credit unions have the financial resources. Activity of the credit union consists of organizing mutual financial assistance by meeting the needs of its members in the services of saving and obtaining loans. Credit union is created by a group of members who pursue a common interest. Agreeing to make regular contributions, they create a fund from which can borrow money for investments and replenishment of working capital at favorable interest rates. The main advantage of credit unions consists in transparency, controllability, governance for shareholders. 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. The relationship between credit unions and shareholders arise from the membership and are not customer relationship. Corporate alliances are intermediaries between credit unions and financial markets.