Accountancy Amendment Act: mandatory internal supervisory body from 2027

In April 2026 the AFM published the Accountancy Amendment Act, aimed at further strengthening quality and governance in the audit sector. The Act introduces significant new obligations for audit firms.

Mandatory internal supervisory body

From 1 July 2027, the largest audit organisations with a regular licence must have a mandatory internal supervisory body, along with a suitability test for policy makers. Not only the external auditor, but also the audit firm through its quality control system, is explicitly held responsible for audit quality.

Audit Quality Indicators (AQIs)

The Act introduces AQIs for OOB audit organisations. These organisations are required to measure and report AQIs to the NBA, after which the NBA makes the information public. This increases transparency on audit quality and enables users of audit opinions to better compare firms.