This study aims at examining: (1) the effect of profitability on capital structure, (2) the effect of funds flow deficit on capital structure, (3) the effect of tangibility on capital structure, (4) the effect of company size on capital structure, (5) the effect of non -debt tax shield on capital structure, and (6) the effect of growth opportunities on capital structure. The dependent variable in this study is the capital structure, while the independent variables are profitability, funds flow deficit, tangibility, company size, non-debt tax shield, and growth opportunities. The population in this study are non-financial companies that went public on the Indonesia Stock Exchange in 2015-2017. The sampling technique used is purposive sampling method. Based on existing criteria, there are 359 samples of non-financial companies obtained. This study uses panel data. This study uses multiple linear regression analysis techniques. The results of this study indicate that: (1) profitability has a negative and significant effect on capital structure, (2) funds flow deficit has a positive and not significant effect on capital structure, (3) tangibility has a negative and significant effect on capital structure, (4) company size has a positive and significant effect on capital structure, (5) non-debt tax shield has a positive and not significant effect on capital structure, (6) growth opportunities has a positive and significant effect on capital structure.