Is ownership structure effective in the relationship between ESG and bank performance?

Purpose The purpose of this study is to examine the causality between the environmental, social and corporate governance (ESG) score, which is the component of banks’ performance obtained from ESG activities, and the capital costs, market values and bankruptcy risk of banks. For this purpose, 117 banks with fully accessible data from 29 developing countries were included. Design/methodology/approach In the methodology part of the study, the panel causality test developed by Emirmahmutoglu and Köse was used based on the periods 2015–2022. First, the cross-section test and delta tests were performed. Then, Levin, Lin and Chu, Breitung, Im, Pesaran, Shin, Fisher ADF and Fisher-PP panel unit root tests and Emirmahmutoglu and Köse panel causality test were performed. Findings As a result of the analyses, bidirectional causality was observed between ESG and weighted average cost of capital of private banks. Similarly, bidirectional causality from ESG to company market capitalization and from ESG to the risk indicator ZSCORE was determined in both private and state banks. The results reveal that ESG components should also be considered in relation to financial performance. In this respect, it is expected to guide regulatory and supervisory institutions in the establishment of regulations and guidelines regarding the determination and promotion of ESG practices that will increase capital efficiency and reduce corporate financing costs. Originality/value Focusing on ESG activities has ceased to be an arbitrary situation for banks. In today’s competitive conditions, financial institutions are turning to strategies that differentiate them from their competitors, such as ESG, as they have difficulty maintaining customer loyalty. Based on the lack of focus on structure differentiation before, the main research question of this study is whether the private and public structure will cause a difference in the effect of ESG activities on bank performance and cost.