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About IAASA

The quality assurance review reports summarise IAASA’s findings from inspections of public-interest entity audit firms. These reports, organised by inspection year, detail the results of IAASA’s inspections of the firms’ overall systems of audit quality control and a sample of audits of PIEs. Starting in 2026, these reports will also include the results of the sustainability assurance inspections.

For a better understanding of the QAR reports, please refer to the published user guide, “Guide to IAASA’s reports on the quality assurance review of public-interest entity audit firms”. This guide explains what users can expect from the QAR reports and how the inspection process shapes the form and content of the reports.

2023 QAR Reports

BDODeloitteEYGrant Thornton
KPMG MazarsPricewaterhouseCoopers

2022 QAR Reports

BDO DeloitteEYGrant Thornton
KPMG MazarsPricewaterhouseCoopers

2021 QAR Reports

BDO    Deloitte EY                 Grant Thornton
KPMGMazarsPricewaterhouseCoopers

2020 QAR Report

BDO    DeloitteEYGrant Thornton
KPMGMazarsPricewaterhouseCoopers

2019 QAR Report

BDODeloitteEYGrant Thornton
KPMG MazarsPricewaterhouseCoopersEisnerAmper