The following auditing standard reflects references to standards before their reorganization. The reorganized auditing standard is available here.
AU Section 220
Source: SAS No. 1, section 220.
Issue date, unless otherwise indicated: November, 1972.
The second general standard is:
In all matters relating to the assignment, an independence in mental attitude is to be maintained by the auditor or auditors.
This standard requires that the auditor be independent; aside from being in public practice (as distinct from being in private practice), he must be without bias with respect to the client since otherwise he would lack that impartiality necessary for the dependability of his findings, however excellent his technical proficiency may be. However, independence does not imply the attitude of a prosecutor but rather a judicial impartiality that recognizes an obligation for fairness not only to management and owners of a business but also to creditors and those who may otherwise rely (in part, at least) upon the independent auditor's report, as in the case of prospective owners or creditors.
It is of utmost importance to the profession that the general public maintain confidence in the independence of independent auditors. Public confidence would be impaired by evidence that independence was actually lacking, and it might also be impaired by the existence of circumstances which reasonable people might believe likely to influence independence. To be independent, the auditor must be intellectually honest; to be recognized as independent, he must be free from any obligation to or interest in the client, its management, or its owners. For example, an independent auditor auditing a company of which he was also a director might be intellectually honest, but it is unlikely that the public would accept him as independent since he would be in effect auditing decisions which he had a part in making. Likewise, an auditor with a substantial financial interest in a company might be unbiased in expressing his opinion on the financial statements of the company, but the public would be reluctant to believe that he was unbiased. Independent auditors should not only be independent in fact; they should avoid situations that may lead outsiders to doubt their independence.
The profession has established, through the AICPA's Code of Professional Conduct, precepts to guard against the presumption of loss of independence. "Presumption" is stressed because the possession of intrinsic independence is a matter of personal quality rather than of rules that formulate certain objective tests. Insofar as these precepts have been incorporated in the profession's code, they have the force of professional law for the independent auditor.
The Securities and Exchange Commission (SEC) has also adopted requirements for independence of auditors who report on financial statements filed with it that differ from the AICPA requirements in certain respects. [fn 1]
The independent auditor should administer his practice within the spirit of these precepts and rules if he is to achieve a proper degree of independence in the conduct of his work.
To emphasize independence from management, many corporations follow the practice of having the independent auditor appointed by the board of directors or elected by the stockholders.