“…Taking the pieces of evidence from the previous literature related to determinants of FIs' efficiency, this study selected four inputs variables; Operating expenses (Masood & Ashraf, 2012;Moussa, 2015;Siraj & Pillai, 2012;Tarus et al, 2012), liabilities (Plantin, 2015;Valverde & Fernandez, 2007), fixed assets (Anbar & Alper, 2011;Berger et al, 2017;Ryan et al, 2014;Yudistira, 2004) and equity (Groff & Morec, 2020;Mondal & Ghosh, 2012;Samad, 2004), and two outputs variables; income (Brar & Singh, 2016;Siraj & Pillai, 2012) and investments (Ashraf et al, 2016;Zaher & Kabir, 2001) to analyses and compare the efficiency of mud .ā rabah and leasing firms.…”