The purpose of this study is to compare the financial performanc e of PT Bank Danamon, Tbk pre and post the merger based on Current Ratio (CR), Debt to Equity Ratio (DER), Capital Adequacy Ratio (CAR), net Profit Margin (NPM), Return On A sset (ROA), Return On Equity (ROE), and Earning Per Share (EPS). The population in this study were all Capital Mixed Banks. The sampling technique was using purposive sampling method. The sample in this study was PT Bank Woori Saudara Indonesia 1906, Tbk The data used in this study are secondary data obtained from published annual financial reports. The analysis techniques used statistical descriptive analysis, normality test, and Paired Sample t Test. Descripti ve Results Statistical analysis show that t he Current Ratio, Debt to Equity Ratio (DER), Net Profit Margin (NPM), Return On Asset ROA, Return On Equity (ROE) Capital Adequacy Ratio (CAR) and Earning Per Share (EPS) increased after the merger. Based on the results of the Paired Sample t Test, it sh o ws that there is no significant difference in Current Ratio, Capital Adequacy Ratio (CAR), Net Profit Margin (NPM), Return On Asset (ROA) Debt to Equity Ratio (DER), Return On Equity ( ROE), and Earning Per Share (EPS) pre and post merger.