The IAS was created as a part of Administrative Reform in the Commission in the late nineties.
It became an independent Service on the 4th of July 2001.
The Internal Audit Capabilities (IACs) and the Audit Progress Committee of the European Commission (APC) were created at the same time.
In 2003, the IAS was mandated to audit the EU agencies – today it has over 40 agencies and bodies in its portfolio.
The IAS was declared compliant with the Institute of Internal Auditors Standards and Code of Ethics on the 4th of July 2008, following an external quality review.
July 2001 - The IAS becomes an independent service, with Jules Muis as Director General.The new Service is part of the changed audit architecture in the Commission, reporting to the Audit Progress Committee (APC) of the European Commission, and co-ordinates with the Internal Audit Capabilities (IACs) embedded in each Directorate-General.
2002 – The IAS continues to implement Action 87 of the Reform White Paper: “the Internal Audit Service will carry out a complete cycle of indepth audits of management and control systems in all DGs”.
2003 – The revised Financial Regulation (Article 185) makes the IAS auditor of the EU agencies.
2004 – Jules Muis steps down as DG, to be replaced by Walter Deffaa.
2005 – Risk management becomes embedded in the Commission’s SPP/ABM planning cycle.The IAS sets up a dedicated quality cell.
2006 – The IAS carries out a quality review of the Internal Audit Capabilities (IACs).
2007 – The Mission charter of the IAS is updated, and a model charter for IACs introduced.
2008 – Certification – the IAS undergoes a quality review which led to certification that its audit activity within the Commission generally complies with the Institute of Internal Auditors’ (IIA) Standards and Code of Ethics.
2009 – Walter Deffaa leaves the IAS; Brian Gray becomes the third Director General of the Service.
2010 – Landmark 75th meeting of Auditnet, the forum for exchange of best practice and co-ordination between the IAS and the IACs.
2011 – The IAS completes its first Overall Opinion into the state of internal control in the Commission.The IAS becomes the Internal Auditor of the European External Action Service.
2012 - Philippe Taverne takes over from Brian Gray as a Director General of the Service
1 March 2015 – centralisation of the Commission's internal audit. On 5 November 2014, the Commission decided to centralise its internal audit function. As a consequence the Internal Audit Capabilities were dismantled and the IAS remained the sole internal audit function for the Commission and its Executive Agencies. The IAS Charter has consequently been updated.
1 September 2016 - Jeffrey Mason becomes acting Director-General of the IAS