EER Assurance Guidance

Sets out Non-Authoritative Guidance on Applying ISAE 3000 (Revised) to Sustainability and other Extended External Reporting (EER) Assurance Engagements issued by the IAASB.

The guidance responds to ten key stakeholder-identified challenges commonly encountered in applying the current assurance standard ISAE (NZ) 3000 (Revised) to EER assurance engagements.

It promotes the consistent high-quality application of the assurance standards to EER assurance engagements to:

  • strengthen the influence of such engagements on the quality of extended external reporting;
  • enhance trust in the resulting assurance reports; and
  • increase the credibility of extended external reports so that they can be trusted and relied upon by their intended users

Please note, this Guide has been published for explanatory purposes only and has no legal status.

Document Download
IAASB Guidance Extended External Reporting (issued April 2021)
Non-authoritative Support Material: Credibility and Trust Model Relating to EER
Non-Authoritative Support Material: Illustrative Examples of Selected Aspects of EER Assurance Engagements
EG Au11 NZ context to EER assurance guidance

Navigation tools

To assist you in navigate the IAASB Guidance and Illustrative Examples documents above, we've created the following tool to help you find relevant chapters.

Chapter Challenge addressed Supplement example number
1

Competence and Capability:

  • Assignment of an engagement team with appropriate competence and capabilities
  • The required competence of the engagement partner

 

1. Competence of engagement team

11. Service performance information
2

Professional Scepticism and Professional Judgement

  • What might impede and what might support the exercise of professional scepticism and professional judgement in the context of EER engagements
 15. SASB Standards as criteria
Structure Chapter Challenge addressed Supplement example number
Acceptance 3

Preconditions and Scope Whether the preconditions are present

  • Scoping the engagement

2. Rationale Purpose

3. Rolling assurance

10. Integrated Reporting

11. Service performance information

 
Planning 4

Process to identify reporting topics

  • The process the preparer might follow where there is no reporting framework or where the framework is not sufficiently detailed

 

5. Using GRI Standards

10. Integrated Reporting Framework
5

Criteria


The suitability and availability of criteria especially where the reporting framework sets out high-level principles but are not sufficiently detailed

 4. Determining suitability

9. Management commentary

10. Integrated Reporting Framework

12. Suitability of criteria

14. “Other information”

 
6

Internal Control

Understanding internal control, especially if the entity’s processes are still developing or involves obtaining information from external sources

11. Service performance information

16. TCFD reporting

 
Procedures 7

Assertions

What assertions are and how they may be used

 

 6. Consider misstatements
8 Evidence
  • What evidence may be needed and available
Evaluating the sufficiency and appropriateness of evidence

7. Public sector

9. Management commentary

10. Integrated Reporting

11. Service performance information

13. From external/ multi-site sources

15. SASB Standards as criteria

16. TCFD reporting

 
Forming a conclusion 9 Materiality
  • Qualitative and quantitative considerations in identifying misstatements

Accumulating and evaluating misstatements where there is inherent uncertainty

 

11. Service performance information

17. Quantitative/ qualitative
Reporting 12

Assurance report

Effective communication in the assurance report so that users understand the conclusion, what has been assured and how the engagement was performed		  
Chapter Challenge addressed Supplement example number
10

Qualitative information

Evaluating qualitative information which may be more variable with the views of those reporting

8. “Other information”

9. Management commentary

10. Integrated Reporting Framework

12. Suitability of criteria

14. “Other information”

15. SASB Standards as criteria

16. TCFD reporting

 
11

Future oriented information

Future-oriented subject matter information that is subject to estimation or occurrence uncertainty

 10. Integrated Reporting

12. Suitability of criteria

15. SASB Standards as criteria

16. TCFD reporting

 
Chapter Challenge Supplement example number
1 Competence and Capability

1. Competence of engagement team

11. Service performance information

 
2 Professional Scepticism and Professional Judgement

15. SASB Standards as criteria

 
3 Preconditions and Scope

2. Rationale Purpose

3. Rolling assurance

10. Integrated Reporting Framework

11. Service performance information

 
4 Process to identify reporting topics

5. Using GRI Standards

10. Integrated Reporting Framework

 
5 Criteria

4. Determining suitability

9. Management commentary

10. Integrated Reporting Framework

12. Suitability of criteria

14. “Other information”

 
6 Internal Control

11. Service performance information

16. TCFD reporting

 
7 Assertions

6. Consider misstatements

 
8 Evidence

7. Public sector

9. Management commentary

10. Integrated Reporting Framework

11. Service performance information

13. From external/ multi-site sources

15. SASB Standards as criteria

16. TCFD reporting

 
9 Materiality

11. Service performance information

17. Quantitative and qualitative

 
10 Qualitative information

8. “Other information”

9. Management commentary

10. Integrated Reporting Framework

12. Suitability of criteria

14. “Other information”

15. SASB Standards as criteria

16. TCFD reporting

 
11 Future oriented information

10. Integrated Reporting Framework

12. Suitability of criteria

15. SASB Standards as criteria

16. TCFD reporting

 
Standards