AAT Level 4 External Auditing (ETAU) Practice Test 2026 – The All-in-One Resource to Master Your Exam!

ISAs are set by the International Audit and Assurance Standards Board, the international standard setter under the International Federation of Accountants. This board develops and issues auditing standards that are intended for use worldwide, providing consistent expectations for auditors across different countries. The other bodies listed operate mainly at national or professional levels: the Auditing Practices Board focuses on UK and Ireland auditing standards, the Financial Reporting Council acts as a UK regulator overseeing corporate reporting and audit, and the Institute of Chartered Accountants is a professional body that offers guidance and education but does not author international auditing standards. ISAs are designed to be adopted or adapted by jurisdictions globally, ensuring a common framework for audit quality.