This study has the objective to test empirically the influence of Capital Adequacy Ratio (CAR),Debt to Equity Ratio, Ratio of Operating Expenses to Operating Income (ROA), and Loan toDeposit Ratio (LDR) to the Financial Performance National Private Banks that Go Public inIndonesia stock exchange. Researchers used 13 samples of the banking industry listed inIndonesia Stock Exchange 2005-2009 period obtained by purposive sampling in order to obtain65 observations. The hypothesis was tested using regression analysis which can be used forpredicting the condition a few years after knowing the magnitude of the influence of theindependent variables. Analysis of data to test regreasi and influence of independent variableson the dependent variable using SPSS. The results obtained in this study that the CapitalAdequacy Ratio (CAR), Debt to Equity Ratio and Loan to Deposit Ratio (LDR) has no effect onthe financial performance. While BOPO significant impact on the bank financial performanceproxied Cash Flow Return on Assets (ROA). Expected results of this study can contribute in thedevelopment of Science in Accounting, in particular aspects of the factors that affect thefinancial performance of banks are proxied by Cash Flow Return on Assets.