The objective of this research is to deteminants of capital adequacy ratio based on risk based bank rating 19 commercial bank in Indonesia.The research involved the use ofMultiple Regression Linier based on Ordinary Least Square estimation technique to determine the affect of the independent variables - Good Corporate Governance measured by operating expense to operating income ratio and net interest margin, Risk Profile measured by non performing loan ratio and loan to deposit ratio, Earning measured by return on asset ratio and return on equity