Does bank governance affect risk and efficiency? Evidence from Islamic banks in GCC countries

Purpose - The motivation of the study is to shed further light on the question of whether the governance structure of Islamic banks (IBs) has an impact on the efficiency and risk of Islamic banks operating in the Gulf Cooperation Council (GCC) after the global financial crisis and during the period 2010–2018. This study aims to examine the extent of governance structure on the efficiency and risk of IBs as the effect of the financial crisis has been less on IBs. In addition, the authors are interested in the GCC region as it represents the hub of Islamic finance. Design/methodology/approach - In this study, the authors examine how the banking governance structure affects the risk-taking and performance of IBs in the GCC countries between 2010 and 2018. The authors construct a banking governance index (CGI) composed of sub-indices for the board structure, risk management, transparency and disclosure, audit committee, Sharia supervisory board and investment account holders. Unlike the majority of previous studies, bank performance is measured with technical efficiency scores using a data envelopment analysis and the authors use a comprehensive CGI. Findings - The results show that IBs in GCC countries adhere to 54% of the attributes covered in the CGI. The authors also note a lack of disclosure regarding the investment account holders and the audit committee. As well, the results indicate that bank governance is positively associated with risk-taking and bank efficiency. Banking risk is influenced by the Sharia board and risk management while bank efficiency is affected by the characteristics of the board structure and investment account holders. Originality/value - To the best of the authors’ knowledge, this is the first study that has developed a comprehensive governance index for IBs in GCC countries that includes a wide range of governance dimensions. The study contributes to the literature on governance in the banking sector by simultaneously examining its impact on the risk-taking and efficiency of IBs and recognizes the dynamic relation between these three variables for IB.