Investigation of changes in the audit expectation‐performance gap in New Zealand (NZ) and the United Kingdom (UK) revealed that, between 1989 and 1999, in both countries the reasonableness gap widened as developments in auditing's external environment stimulated an increase in society's unreasonable expectations of auditors but the deficient performance gap narrowed as monitoring of auditors' performance resulted in societal perception of improved performance. Between 1999 and 2008, in the UK, widespread discussion of the environmental developments and related audit issues, along with more stringent monitoring of auditors' performance, resulted in a narrowing of the reasonableness and deficient performance gaps. In NZ, lacking these factors, these gaps widened. Additionally, changes to auditing standards resulted in some ‘reasonably expected’ responsibilities becoming actual responsibilities of auditors and, in both countries, the deficient standards gap narrowed. The research findings illuminate the means by which the audit expectation‐performance gap might be narrowed.