The purpose of this research is to understand the effect of inflation and financing to deposit ratio on Mudhrabah Savings in Islamic commercial banks in Indonesia in the period 2015-2019. Financial statements for the period 2015-2019 with the number of 6 Islamic banking companies were sampled in this research. Data processing results are obtained using multiple regression analysis. The results of the T test showed that inflation and FDR had a significant positive influence on mudharabah savings, while the results of the F test showed that inflation, and financing to deposit ratio had a significant effect on mudharabah savings.