The capital structure balances the use of own capital with the use of debt,which means how much own capital and how much debt will be used, So as to produce an optimal capital structure.The purpose of study is to determine the effect of bussines risk, sales stability and liquidity on the capital structure. The method used is quantitative research. A sample of 23 companies in the consumer goods industry sector listed on the IDX with 4 research periods totaling 92 observations.The model of analysis in this study is multiple linear regression using the SPSS program. Data testing is done by using the classical assumption test, the coefficient of determination test,the F test and the T test. The results of the analysis through hypothesis testing, simultaneously business risk, sales stability and liquidity have a significant effect on capital structure. Partially,business risk and sales stability have a positive and significant effect on capital structure, while lliquidity has a negative and significant effect on capital structure. The results of the Determination tets obtained R Square of 84% of variations in capital structure variables can be explained by variations in other variables that effect the capital structure.