The purpose of this research is to analyze and determine the financial performance of Islamic banking in Indonesia and Islamic banking in Malaysia using the Dupont System, represented by the ratio of NPM (Net Profit Margin), TATO (Total Asset Turnover), ROI (Return On Investment), MER (Multyplyer Equity). Ratio) and ROE (Return On Equity). This research uses quantitative data, using secondary data sources by using library studies and library research using different test T in each ratio. Based on the results of the study, it shows that there are significant differences in the ratio of NPM, TATO, ROI and ROE. In contrast, for the MER ratio, there is no significant difference between Islamic banking in Indonesia and Malaysia.