“…Notable financial ratios employ in the literature include returns on asset (ROA), returns on equity (ROE), net interest margin, and earnings per share (Akinlo, 2012b; Al‐Harbi, 2019; Gupta & Mahakud, 2020; Inyiama & Victoria, 2014; Olawale et al, 2017; Sanusi & Zulaikha, 2019). The frontier approach, on the other hand, uses the efficiency score to assess a financial institution's performance (Leykun, 2018; Mutarindwa et al, 2021; Ojeyinka & Akinlo, 2021). To determine a bank's performance, the frontier technique compares its cost‐efficiency score to that of the best bank on the efficiency frontier.…”