An audit committee is a committee of an organisation's board of directors which is responsible for oversight of the financial reporting process, selection of the independent auditor, and receipt of audit results both internal and external. In a U.S. publicly traded company, an audit committee is an operating committee of the board of directors charged with oversight of financial reporting and disclosure. Committee members are drawn from members of the company's board of directors, with a Chairperson selected from among the committee members. A qualifying (cf. paragraph "Composition" below) audit committee is required for a U.S. publicly traded company to be listed on a stock exchange. Audit committees are typically empowered to acquire the consulting resources and expertise deemed necessary to perform their responsibilities. The role of audit committees continues to evolve as a result of the passage of the Sarbanes-Oxley Act of 2002. Many audit committees also have oversight of regulatory compliance and risk management activities. Not for profit entities may also have an audit committee. Internationally, an audit committee assists a board of directors to fulfil its corporate governance and overseeing responsibilities in relation to an entity's financial reporting, internal control system, risk management system and internal and external audit functions. Its role is to provide advice and recommendations to the board within the scope of its terms of reference / charter. Terms of reference and requirements for an audit committee vary by country, but may be influenced by economic and political unions capable of passing legislation. The European Union directives are applied across Europe through legislation at the country level. Although specific legal requirements may vary by country in Europe, the source of legislation on corporate governance issues is often found at the European Union level and within the non-mandatory corporate governance codes that cross national boundaries. Definitions Institute of Internal Auditors definition: "The Audit committee refers to the governance body that is charged with oversight of the organization’s audit and control functions. Although these fiduciary duties are often delegated to an audit committee of the board of directors, the (...) Practice Advisory is also intended to apply to other oversight groups with equivalent authority and responsibility, such as trustees, legislative bodies, owners of an owner-managed entity, internal control committees, or full boards of directors" (IIA Practice Advisory 2060-2 of 2004). In Nigeria, the Audit Committee is defined as a “Committee of Directors and the enterprises shareholders