The information delivered by the companies stand for numerous political and economical decisions of great importance. Thus, the financial reports drawn up and published by the organizations concern a lot of internal and external users: investors, managers, employees, clients, bank creditors and not least, the state. Practice proved explicitly that there is a conflict of interests between those that gather, process and synthesize accounting information and the users of this information. The users often show a lack of trust regarding the information supplied by the accountantship because the producers of accounting information are not generally independents regarding the operations they make and the situations they supply. The important economical consequences that may result determined the creation and the development of audit and implicitly the profession of financial auditor. The clear and determinant purpose was the necessity of enlarging the credibility of financial reports published by the companies and of course, the compliance to the demands of the European Union. The work aims to follow the financial audit development from its first forms to present, taking into account the legal frame as well as the user’s informational necessities.