International Standards on Auditing

International Standards on Auditing
Name	International Standards on Auditing
Abbreviation	ISA
Issued by	International Auditing and Assurance Standards Board
First issued	2001
Latest revision	ongoing
Jurisdiction	International

International Standards on Auditing are a set of professional auditing standards for the conduct of financial statement audits promulgated to enhance consistency and quality in audit practice internationally. They are developed by the International Auditing and Assurance Standards Board (IAASB) under the auspices of the International Federation of Accountants, and are used by national accounting bodies, regulatory agencies such as the Financial Conduct Authority, and transnational organizations including the European Commission and the International Organization of Securities Commissions. The standards interact with major frameworks and instruments like the International Financial Reporting Standards, the Sarbanes–Oxley Act, and guidance from the Public Company Accounting Oversight Board.

History and development

The roots trace to cooperative efforts among bodies such as the International Federation of Accountants, the International Organization of Supreme Audit Institutions, and national institutes like the Institute of Chartered Accountants in England and Wales and the American Institute of Certified Public Accountants that responded to landmark events including corporate failures exemplified by Enron Corporation, WorldCom, and the legislative responses typified by the Sarbanes–Oxley Act. The IAASB, succeeding earlier committees, consolidated extant pronouncements into a coherent suite in 2001 and has revised the corpus following major reports from panels such as the Turner Review and inquiries by regulators like the Securities and Exchange Commission (United States). Influential contributors and commentators include members drawn from the International Federation of Accountants’s board, academics from institutions like London School of Economics, and technical advisors associated with Organisation for Economic Co-operation and Development working groups.

Structure and content of the standards

The ISAs are organized into a framework of general principles, risk assessment, responses to assessed risks, and reporting standards. Key pronouncements align with authoritative instruments such as International Standard on Quality Control 1, and reference methodological approaches used by bodies like the Committee of Sponsoring Organizations of the Treadway Commission and standards-setting work by the International Accounting Standards Board. Specific ISAs address topics ranging from auditor responsibilities related to fraud and going concern to procedures for audit evidence, sample selection, and audit documentation, reflecting methods employed by firms including the Big Four and national firms regulated by entities like the Financial Reporting Council (United Kingdom). Cross-references are common with standards issued by the International Ethics Standards Board for Accountants.

Adoption and implementation worldwide

Adoption pathways vary across jurisdictions: some states adopt ISAs verbatim via regulators such as the Australian Securities and Investments Commission, while others adapt them into national standards promulgated by organizations like the Institute of Chartered Accountants of India or the Chinese Institute of Certified Public Accountants. Regional blocs including the European Union influence transposition through directives enforced by agencies such as the European Securities and Markets Authority. Implementation has been supported by capacity-building programs from the World Bank, technical cooperation from the International Monetary Fund, and training curricula provided by universities such as Harvard University and University of Oxford. Audit oversight regimes led by bodies like the Public Company Accounting Oversight Board and national audit regulators monitor conformity and enforcement.

Relationship with other auditing and assurance standards

ISAs interact with national standards such as those of the American Institute of Certified Public Accountants and supranational frameworks including the International Public Sector Accounting Standards Board and standards from the Institute of Internal Auditors. They are coordinated with ethical standards from the International Ethics Standards Board for Accountants and financial reporting frameworks like the International Financial Reporting Standards to ensure coherent assurance opinions used by stakeholders including credit rating agencies and institutional investors such as BlackRock. Overlaps and divergences have been addressed through memoranda with regulators like the Securities and Exchange Commission (United States) and convergence initiatives with bodies such as the Financial Accounting Standards Board.

Impact on audit quality and professional practice

Empirical studies and regulatory reviews have linked adoption of ISAs to changes in audit methodology, documentation practices, and emphasis on professional skepticism promoted by practitioners from firms like Deloitte, PricewaterhouseCoopers, Ernst & Young, and KPMG. Improved comparability of audit reports aids market participants including International Monetary Fund staff and analysts from institutions like Moody's Investors Service in assessing financial information. Capacity-building by professional bodies such as the Institute of Chartered Accountants of Scotland and oversight from regulators like the Financial Reporting Council (United Kingdom) affect the degree to which ISAs translate into higher audit quality and investor protection.

Criticisms and controversies

Critiques target perceived complexity, implementation costs for small and medium practices represented by organizations such as the International Federation of Accountants, and tensions between prescriptive requirements and professional judgment advocated by academics from London Business School and Columbia Business School. High-profile audit failures involving firms linked to Arthur Andersen and cases reviewed by tribunals such as the United States Court of Appeals have spurred debate over enforcement and standard-setting legitimacy, with commentators from bodies like the Organisation for Economic Co-operation and Development and regulators including the Securities and Exchange Commission (United States) calling for reforms in oversight, standard clarity, and resources for developing economies assisted by the World Bank.

Category:Auditing standards