Abstract
The purposes of this study were to analyze and prove the effect of capital on profitability of LQ 45 group manufacturing companies in Indonesia Stock Exchange period 2012-2016. The variables of capital structure used were debt ratio and debt equity ratio, while profitability variable
used were return on assets and return on equity. The data used was secondary data taken by purposive sampling at 9 (nine) manufacturing companies and analyzed by multiple linear regression method. The results showed debt ratio and debt to equity ratio simultaneously significant to return on
asset and return on equity. Debt ratio and debt to equity ratio were only significant to return on equity but not to return on assets.