Corporate governance and internal audit: an institutional theory perspective

Purpose This paper aims to explore internal audit effectiveness through its contribution to corporate governance. Namely, the authors attempt to investigate the impact of internal audit professionalization on internal audit’s contribution to corporate governance. Design/methodology/approach Using a research framework informed by institutional theory, the authors predict that internal audit’s contribution to corporate governance is associated with factors related to internal audit professionalization. To investigate the arguments, the authors combine data from a survey of 49 listed companies in the Athens Stock Exchange with publicly available information from annual reports. Findings Empirical results indicate that internal audit professionalization affects internal audit effectiveness, as internal audit’s contribution to corporate governance is improved for organizations where internal audit function complies with internal auditing standards and internal auditors hold professional certifications. The findings also suggest that internal audit’s contribution to corporate governance is shaped by some company-specific characteristics, namely, CEO duality and audit committee quality. Practical implications The results have implications for internal auditors who wish to increase the efficiency of their work, corporate governance mechanisms such as the board of directors and the audit committee, which can use the findings of this study to better respond to their responsibilities concerning internal audit and regulators who can also benefit to strengthen areas with substantial impact on internal audit’s contribution to corporate governance. Originality/value This paper contributes to the academic discussion on the role of internal audit in corporate governance and complements the work of other researchers in the field of internal audit professionalization. This study tries to fill a gap in the literature on the effect of internal audit professionalization elements on internal audit’s contribution to corporate governance.