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Audit



 
 
The most general definition of an audit is an evaluation of a person, organization, system, process, project or product. Audits are performed to ascertain the validity
Validity

The term Validity in logic applies to Argument or statements....
 and reliability
Reliability

In general, reliability is the ability of a person or system to perform and maintain its functions in routine circumstances, as well as hostile or unexpected circumstances....
 of information, and also provide an assessment of a system's internal control
Internal control

In accounting and organizational theory, Internal control is defined as a process effected by an organization's structure, work and authority flows, people and management information systems, designed to help the organization accomplish specific goals or objectives....
. The goal of an audit is to express an opinion on the person/organization/system etc. under evaluation based on work done on a test basis. Due to practical constraints, an audit seeks to provide only reasonable assurance that the statements are free from material error.






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The most general definition of an audit is an evaluation of a person, organization, system, process, project or product. Audits are performed to ascertain the validity
Validity

The term Validity in logic applies to Argument or statements....
 and reliability
Reliability

In general, reliability is the ability of a person or system to perform and maintain its functions in routine circumstances, as well as hostile or unexpected circumstances....
 of information, and also provide an assessment of a system's internal control
Internal control

In accounting and organizational theory, Internal control is defined as a process effected by an organization's structure, work and authority flows, people and management information systems, designed to help the organization accomplish specific goals or objectives....
. The goal of an audit is to express an opinion on the person/organization/system etc. under evaluation based on work done on a test basis. Due to practical constraints, an audit seeks to provide only reasonable assurance that the statements are free from material error. Hence, statistical sampling is often adopted in audits. In the case of financial audit
Financial audit

A financial audit, or more accurately, an audit of financial statements, is the review of the financial statements of a company or any other Juristic person , resulting in the publication of an independent opinion on whether or not those financial statements are relevant, accurate, complete, and fairly presented....
s, a set of financial statements are said to be true and fair when they are free of material misstatements - a concept influenced by both quantitative and qualitative factors.

Traditionally audits were mainly associated with gaining information about financial systems and the financial records of a company or a business (see financial audit
Financial audit

A financial audit, or more accurately, an audit of financial statements, is the review of the financial statements of a company or any other Juristic person , resulting in the publication of an independent opinion on whether or not those financial statements are relevant, accurate, complete, and fairly presented....
). However recently auditing has begun to include other information about the system, such as information about environmental performance. As a result there are now professions that conduct environmental audits
Environmental audits

Environmental audits are intended to quantify environmental performance and environmental position. In this way they perform an analogous function to financial audits....
.

In financial accounting, an audit is an independent assessment of the fairness by which a company's financial statements are presented by its management. It is performed by competent, independent and objective person or persons, known as auditors or accountant
Accountant

An accountant is a practitioner of accountancy, which is the measurement, disclosure or provision of assurance about financial information that helps managers, investors, tax authorities and other decision makers make resource allocation decisions....
s, who then issue an auditor's report
Auditor's report

The Auditor's report is a formal opinion, or disclaimer thereof, issued by either an internal auditor or an independent external auditor as a result of an internal or external audit or evaluation performed on a Juristic person or subdivision thereof ....
 on the results of the audit.

Such systems must adhere to generally accepted standards set by governing bodies that regulate businesses. It simply provides assurance for third parties or external users that such statements present 'fairly' a company's financial condition and results of operations.

Quality audits


Quality audits are performed to verify the effectiveness of a quality management system
Quality management system

Quality Management System can be defined as a set of policies, Business processes and How-to required for planning and Execution in the core business area of an organization....
. This is part of certifications such as ISO 9001. They are essential to verify existence of objective evidence of processes, to assess how successfully processes have been implemented, for judging the effectiveness of achieving any defined target levels, provide evidence concerning reduction and elimination of problem areas, and are a hands-on management tool for achieving continual improvement in an organisation.

For the benefit of the organization, quality auditing should not only report non-conformances and corrective actions, but also highlight areas of good practice. In this way other departments may share information and amend their working practices as a result, also enhancing continual improvement.

Integrated audits

In the US, audits of publicly-listed companies are governed by rules laid down by the Public Company Accounting Oversight Board (PCAOB). Such an audit is called an Integrated Audit, and auditors have the additional responsibilities of expressing opinions on management's assessment of the firm's internal control, and on the effectiveness of internal control over financial reporting based on their (the auditors') own assessment.

Types of auditors

There are two types of auditors:

  • Internal auditors are employees of a company hired to assess and evaluate its system of internal control. To maintain independence, they present their reports directly to the board of directors or to top management. They provide functional operation to the concern. Internal auditors are employees of the company so that they can easily find out the frauds and any mishappening.


  • External auditors are independent staff assigned by an auditing firm to assess and evaluate financial statements of their clients or to perform other agreed upon evaluations. Most external auditors are employed by accounting firms for annual engagements. They are called upon from the out side of the company.


Major auditing firms

The four largest accounting firms in the world are collectively referred to as the Big Four
Big Four auditors

The Big Four are the four largest international accountancy and professional services firms, which handle the vast majority of Financial audit for Public company as well as many Private company....
. They are as follows:

  • PricewaterhouseCoopers
    PricewaterhouseCoopers

    PricewaterhouseCoopers is the world's largest professional services firm. It was formed in 1998 from a merger between Price Waterhouse and Coopers & Lybrand, both formed in London....
    , also known as PwC
  • Ernst & Young
    Ernst & Young

    Ernst & Young is one of the largest professional services firms in the world and one of the Big Four auditors, along with PricewaterhouseCoopers, Deloitte Touche Tohmatsu and KPMG....
    , also known as EY
  • KPMG
    KPMG

    KPMG is one of the largest professional services firms in the world. KPMG employs over 136,500 people in a global network of professional services firms spanning over 140 countries....
  • Deloitte Touche Tohmatsu
    Deloitte Touche Tohmatsu

    Deloitte Touche Tohmatsu is one of the largest professional services firms in the world and one of the Big Four auditors, along with PricewaterhouseCoopers, Ernst & Young, and KPMG....
    , also known as Deloitte
There are many other audit firms competing with the big four for major audit engagements. Competition has intensified in response to independence issues and other legislative requirements introduced as a consequence of the Arthur Andersen
Arthur Andersen

Arthur Andersen LLP, based in Chicago, was once one of the Big Four auditors among PricewaterhouseCoopers, Deloitte Touche Tohmatsu, Ernst & Young and KPMG, providing auditing, tax, and consulting services to large corporations....
 Scandal. In the US and Australia, these firms are referred to as "mid-tier". Some of these include: BDO International
BDO International

BDO International is a worldwide network of public accounting firms, called BDO Member Firms, serving international clients. Each BDO Member Firm is an independent legal entity in its own country....
, Moore Stephens LLP, Grant Thornton International
Grant Thornton International

Grant Thornton International is a global organisation of accounting and consulting member firms which provide assurance, tax and specialist advisory services to privately held businesses, public interest entities, and public sector entities....
, McGladrey & Pullen, Hall Chadwick, Dauby O'Connor & Zaleski, LLC, PKF
PKF

PKF is a global network of accountancy firms. Member firms operate under the PKF brand in over 119 countries worldwide. Total revenues for 2005 were $1.2 billion USD, placing PKF in the top 10 global accountancy firms....
, Pitcher Partners, Johnson Lambert & Co. LLP, Beard Miller Company
Beard Miller Company

Beard Miller Company, LLP is an accounting and auditing firm serving clients mainly in the mid-Atlantic region of the United States. The firm was created through a series of mergers, the largest occurring in January 2001 between Beard & Company and Miller & Company....
, DFK International, Horwath International
Horwath International

Horwath International is the eighth-largest association of professional services firms in the world. It employs about 19,000 people in about 460 offices around the world....
, and UHY firm.

In the UK the medium sized firms are also referred to as mid-tier. Many of these firms are international and increasingly are competing for work against the Big Four, especially following the recent large auditing scandals
Enron scandal

The Enron scandal was a financial scandal involving Enron Corporation and its accounting firm Arthur Andersen, that was revealed in late 2001....
.

Auditing firms around the world


While the four major audit firms listed above provide audit services to the largest corporations in the United States of America, audit firms around the world are also in partnership with the Big Four. Since corporations held offices in other parts of the world, they tend to be audited by affiliates of the Big Four to maintain consistency and uniformity in their application of auditing standards.Pakistani firms have major contributions in audit field.

See also

  • Audit risk
    Audit risk

    Audit risk is a term that is commonly used in relation to the audit of the financial statements of an entity. . The primary objective of such an audit is to provide an opinion as to whether or not the financial statements under audit present fairly the financial position, profit/loss and cash flows of the entity....
  • Financial audit
    Financial audit

    A financial audit, or more accurately, an audit of financial statements, is the review of the financial statements of a company or any other Juristic person , resulting in the publication of an independent opinion on whether or not those financial statements are relevant, accurate, complete, and fairly presented....
  • Internal audit
    Internal audit

    Internal auditing is a profession and activity involved in helping organisations achieve their stated objectives. It does this by utilizing a systematic methodology for analyzing business processes, procedures and activities with the goal of highlighting organizational problems and recommending solutions....


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