The  Effect of Net Interest Margin (NIM) and Capital Adequacy Ratio (CAR) on the Loan to Deposit Ratio (LDR) of State-Owned Banks Listed on the Indonesia Stock Exchange (IDX)

Heni Susanti; Nafisah Nurulrahmatia; Alwi

doi:10.63922/ijebir.v5i04.4349

Heni Susanti Program Studi Manajemen, Sekolah Tinggi Ilmu Ekonomi (STIE) BIMA, Indonesia
Nafisah Nurulrahmatia Program Studi Manajemen, Sekolah Tinggi Ilmu Ekonomi (STIE) BIMA, Indonesia
Alwi Program Studi Manajemen, Sekolah Tinggi Ilmu Ekonomi (STIE) BIMA, Indonesia

DOI: https://doi.org/10.63922/ijebir.v5i04.4349

Keywords: Net Interest Margin (NIM), Capital Adequacy Ratio (CAR), Loan to Deposit Ratio (LDR), State-Owned Banks.

Abstract

This study aims to examine the effect of Net Interest Margin (NIM) and Capital Adequacy Ratio (CAR) on Loan to Deposit Ratio (LDR) in State-Owned Banks listed on the Indonesia Stock Exchange (IDX). LDR is one of the important indicators used to measure a bank's ability to perform its intermediation function through credit distribution. Factors that are presumed to influence LDR include the bank's ability to generate net interest income, as reflected by Net Interest Margin (NIM), and the adequacy of bank capital, as measured by Capital Adequacy Ratio (CAR).
This research employed a quantitative approach with an associative research design. The population consisted of all State-Owned Banks listed on the Indonesia Stock Exchange, namely PT Bank Mandiri Tbk (BMRI), PT Bank Rakyat Indonesia Tbk (BBRI), PT Bank Negara Indonesia Tbk (BBNI), PT Bank Tabungan Negara Tbk (BBTN), and PT Bank Syariah Indonesia Tbk (BRIS). The sampling technique used was saturated sampling, in which all members of the population were included as research samples. The study utilized secondary data obtained from the annual financial statements of the banks for the period 2021–2025, accessed through IDN Financial. Data analysis techniques included classical assumption tests, multiple linear regression analysis, correlation coefficient analysis, coefficient of determination, t-test, and F-test using IBM SPSS software.
The results indicate that Net Interest Margin (NIM) has a significant partial effect on Loan to Deposit Ratio (LDR), with a t-value of 3.702 and a significance value of 0.001. Capital Adequacy Ratio (CAR) also has a significant partial effect on Loan to Deposit Ratio (LDR), with a t-value of -2.147 and a significance value of 0.043. Simultaneously, Net Interest Margin (NIM) and Capital Adequacy Ratio (CAR) have a significant effect on Loan to Deposit Ratio (LDR), with an F-value of 6.906 and a significance value of 0.005. The coefficient of determination (R²) is 0.386, indicating that NIM and CAR explain 38.6% of the variation in LDR, while the remaining 61.4% is influenced by other factors not examined in this study.

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