This study draws insights from practice-based view theory (PBV) to investigate the impact of fintech adoption (FA) on the non-financial performance (NFP) of banking institutions in developing countries, considering the mediating role of circular economy practices (CEPs). A structured questionnaire was distributed to collect primary data from banks’ staff in Iraq, Egypt, Oman, and Jordan using a convenience sampling method with a sample size of 397. Subsequently, the structural equation model was utilized to test the research hypotheses of the proposed conceptual model. The study’s findings revealed that FA positively and significantly impacts CEPs and banks’ NFP (customer satisfaction, internal processes, and learning and growth perspectives). Moreover, CEPs mediate the relationship between FA and banks’ NFP in a positive and significant way. Given the dearth of the literature, this is the first study to fill the research gaps by investigating the impact of FA on the NFP of banking institutions in developing countries, considering CEPs as a mediator, and yielding critical theoretical and practical implications. The study’s findings provide banks’ managers with valuable insights about how to enhance their NFP through FA and CEPs during and after crises and support policymakers and regulators in developing a legislative framework that guides banks to invest in CE models and provides reward systems to encourage them.

From reviewing the literature, there was still a scarcity of research about direct and indirect relationships between fintech adoption (FA) and banks’ environmental performance (BEP), particularly in developing countries. Therefore, this is a pioneering study that empirically explored the impacts of FA on BEP in the Middle East (ME) region, considering the mediating role of green accounting practices (GAPs)—such as green banking practices (GBPs), green finance (GF), and circular economy practices (CEPs)—based on legitimacy and ecological modernization (EM) theories to address these research gaps. Based on a structured survey and convenience sampling technique, the primary data were obtained from a sample of 500 members of staff from banks in Saudi Arabia, Bahrain, Egypt, Oman, Iraq, and Jordan. The structural equation model (SEM) was utilized to investigate the relationships among this study’s variables. The findings indicated that FA positively and significantly impacts GBPs, GF, CEPs, and BEP, which answered the first research question. Furthermore, the linkage between FA and BEP is positively and significantly mediated by GBPs, GF, and CEPs; thus, the second research question was answered. The findings provide bank executives and policy makers with valuable understanding and suggestions to deploy more investments in eco-friendly practices to enhance the environmental performance (EP), societal legitimacy, and achieve competitive advantage. Additionally, collaboration among the banking institutions, governments, and international firms is essential to promote FA and GAPs and enhance the EP.