Extended External Reporting (EER) Assurance


The key objective of the project is to enable more consistent and appropriate application of ISAE 3000 (Revised) to emerging forms of external reporting (EER) and greater trust in the resulting assurance reports by users of EER. This will be achieved primarily through:

 (i) Developing non-authoritative guidance in applying ISAE 3000 (Revised) to EER;

 (ii) Continuing to provide thought leadership on assurance issues in relation to EER; and

 (iii) Coordinating the work of the project with related initiatives of other relevant international organizations.


Pauline Irwin

Task Force



Mario Abela (World Business Council for Sustainable Development)
Steve Gunders (Corporate Reporting Dialogue)
Thalia Vounaki (Principles for Responsible Investment)

Project Stages



The EER Assurance project is the IAASB’s response to the comments received on the discussion paper issued in 2016, Supporting Credibility and Trust in Emerging Forms of External Reporting.

EER encapsulates many different forms of reporting, including, but not limited to, integrated reporting, sustainability reporting and non-financial reporting about environmental, social and governance matters. Such reports may be prepared under legislative or regulatory requirements and established frameworks, standards and guidance issued by international or national standard setters.

The IAASB approved the project proposal in October 2017 and established the EER Task Force. The project is being run with the support of the World Business Council for Sustainable Development (WBCSD), which has provided grant funding through a collaboration established by the Gordon and Betty Moore Foundation.

The project is split into two phases. Phase 1 will run throughout 2018 and will cover approximately half of the issues relating to the Ten Key Challenges identified in the discussion paper. These include:

  • Making materiality judgements;
  • The maturity of governance and internal control over EER reporting processes;
  • Evaluating the suitability of criteria;
  • Building assertions; and
  • Working with narrative and future-oriented information.
For an over view of what Extended External Reporting is please watch this series of short video's



 The Board was updated on the work of the EER Task Force on the challenges allocated to Phase 2 of the project. These challenges include: determining the scope of an EER assurance engagement; obtaining evidence in respect of narrative and future-oriented information; exercising professional skepticism and professional judgment; obtaining the competence necessary to perform the engagement; and communicating effectively in the assurance report.

The Board discussed views on the EER Task Force’s initial proposals to address each of these challenges in the Phase 2 guidance. The EER Task Force will consider the inputs received from the Board, together with responses to the Phase 1 EER Consultation Paper in so far as they impact the Phase 2 guidance, in developing the draft Phase 2 guidance, which will be presented for discussion at the September 2019 IAASB meeting.


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