Abstract
Along with the development of sharia banking institutions in Indonesia, the more types of services provided by these Islamic banking institutions. This study focuses on internal factors, such as Financing to Deposit Ratio (FDR) and Non-Performing Financing (NPF), because of the presumption that these factors have the most significant influence on profit-sharing that exist in the Islamic banking system. This study aims to determine the effects of Financing to Deposit Ratio (FDR) and Non-Performing Financing (NPF) variables on Mudharabah Deposits of PT Bank Syariah Mandiri, both partially and simultaneously for the 2011-2017 period. The sample used in this study is PT Bank Syariah Mandiri in Indonesia by using multiple linear regression analysis which is processed using SPSS (Statistical Product Services and Solutions) software version 24. The results of this study state that FDR has a negative effect on profit sharing of Mudharabah Deposits, while NPF has a positive influence on the profit sharing of Mudharabah Deposits. These results also indicate that simultaneously the Financing to Deposit Ratio (FDR) and Non-Performing Financing (NPF) variables have a significant influence on the profit sharing of PT Bank Syariah Mandiri Mudharabah Deposits for the period 2011-2017. This is supported by the results of the coefficient of determination. The coefficient is 0.673 or 67.3% of profit sharing of the Mudharabah Deposits are influenced by the FDR and NPF variables, and the remaining 32.7% is influenced by other variables not used in this research model.