
An audit is an "independent examination of financial information of any entity, whether profit oriented or not, irrespective of its size or legal form when such an examination is conducted with a view to express an opinion thereon.” Auditing also attempts to ensure that the books of accounts are properly maintained by the concern as required by law. Auditors consider the propositions before them, obtain evidence, and evaluate the propositions in their auditing report.

Assurance service is an independent professional service, typically provided by Chartered or Certified Public Accountants or Chartered Certified Accountants, with the goal of improving information or the context of information so that decision makers can make more informed, and presumably better, decisions. Assurance services provide independent and professional opinions that reduce information risk.

Auditor independence refers to the independence of the internal auditor or of the external auditor from parties that may have a financial interest in the business being audited. Independence requires integrity and an objective approach to the audit process. The concept requires the auditor to carry out his or her work freely and in an objective manner.

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, as an assurance service in order for the user to make decisions based on the results of the audit.

A bank examiner is a financial professional who has the task of making sure that banks and savings and loan associations are operating legally and safely, in accordance with the bank regulations imposed on these institutions by the chartering level of government. In the United States, they may conduct supervision on behalf of a U.S. government agency, the Federal Reserve System, a state banking authority, or for the financial institutions themselves as internal auditors. The main duties of a bank examiner are to ensure that a bank's operations are legal and can provide financial stability. A bank examiner will also review financial statements, evaluate the level of risk associated with loans, and assess the management of a bank.

Continuous auditing is an automatic method used to perform auditing activities, such as control and risk assessments, on a more frequent basis. Technology plays a key role in continuous audit activities by helping to automate the identification of exceptions or anomalies, analyze patterns within the digits of key numeric fields, review trends, and test controls, among other activities.

Control self-assessment is a technique developed in 1987 that is used by a range of organisations including corporations, charities and government departments, to assess the effectiveness of their risk management and control processes.

An external auditor performs an audit, in accordance with specific laws or rules, of the financial statements of a company, government entity, other legal entity, or organization, and is independent of the entity being audited. Users of these entities' financial information, such as investors, government agencies, and the general public, rely on the external auditor to present an unbiased and independent audit report.

A 'financial audit' is conducted to provide an opinion whether "financial statements" are stated in accordance with specified criteria. Normally, the criteria are international accounting standards, although auditors may conduct audits of financial statements prepared using the cash basis or some other basis of accounting appropriate for the organisation. In providing an opinion whether financial statements are fairly stated in accordance with accounting standards, the auditor gathers evidence to determine whether the statements contain material errors or other misstatements.

Forensic accounting, forensic accountancy or financial forensics is the specialty practice area of accounting that investigates whether firms engage in financial reporting misconduct. Forensic accountants apply a range of skills and methods to determine whether there has been financial reporting misconduct.

Generally Accepted Auditing Standards, or GAAS are sets of standards against which the quality of audits are performed and may be judged. Several organizations have developed such sets of principles, which vary by territory. In the United States, the standards are promulgated by the Auditing Standards Board, a division of the American Institute of Certified Public Accountants (AICPA).

The Global Reporting Initiative is an international independent standards organization that helps businesses, governments and other organizations understand and communicate their impacts on issues such as climate change, human rights and corruption.

Internal auditing is an independent, objective assurance and consulting activity designed to add value to and improve an organization's operations. It may help an organization accomplish its objectives by bringing a systematic, disciplined approach to evaluate and improve the effectiveness of risk management, control and governance processes. Internal auditing might achieve this goal by providing insight and recommendations based on analyses and assessments of data and business processes. With commitment to integrity and accountability, internal auditing provides value to governing bodies and senior management as an objective source of independent advice. Professionals called internal auditors are employed by organizations to perform the internal auditing activity.

The International Federation of Accountants (IFAC) is the global advocacy organization for the accountancy profession the accountancy profession; mainly for the financial accounting and auditing professions. Founded in 1977, IFAC has more than 175 members and associates in more than 130 countries and jurisdictions, representing more than 3 million accountants employed in public practice, industry and commerce, government, and academe. The organization supports the development, adoption, and implementation of international standards for accounting education, ethics, and the public sector as well as audit and assurance. It supports four independent standard-setting boards, which establish international standards on ethics, auditing and assurance, accounting education, and public sector accounting. It also issues guidance to encourage high-quality performance by professional accountants in small and medium business accounting practices.

Statutory auditor is a title used in various countries to refer to a person or entity with an auditing role, whose appointment is mandated by the terms of a statute.