International Research Journal of Management, IT & Social Sciences Available online at https://sloap.org/journals/index.php/irjmis/ Vol. 8 No. 3, May 2021, pages: 219-227 ISSN: 2395-7492 https://doi.org/10.21744/irjmis.v8n3.1469 219 Effect of CAR, NPL, and BOPO on NIM with ROE as a Moderating Variable I Wayan Dedik Widana a Gerianta Wirawan Yasa b I Gusti Ngurah Agung Suaryana c Article history: Abstract Submitted: 9 January 2021 Revised: 18 February 2021 Accepted: 27 March 2021 This study aims to obtain empirical evidence about the effect of CAR, NPL and BOPO on NIM and examine the role of ROE in moderating the effect of CAR, NPL, and BOPO on NIM. This study uses purposive sampling method. The data used is secondary data obtained from the financial statements of banking companies listed on the Indonesia Stock Exchange in the 2015-2019 period. Data analysis techniques using moderated regression analysis (MRA) test. The result of the analysis shows that CAR has a positive effect on NIM. NPL and BOPO has a negative effect on NIM. The moderating variable ROE strengthens the effect of CAR on NIM but weakens the effect of NPL and BOPO on NIM. Keywords: capital adequacy ratio; net interest margin; non performing loan; operating expenses operating income; return equity; International research journal of management, IT and social sciences © 2021. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/). Corresponding author: Widana, I.W.D. Economics and Business Faculty, Udyana University, Denpasar, Indonesia Email address: dedikwidana@student.unud.ac.id a Economics and Business Faculty, Udyana University, Denpasar, Indonesia b Economics and Business Faculty, Udyana University, Denpasar, Indonesia c Economics and Business Faculty, Udyana University, Denpasar, Indonesia