SUMMARY
The purpose of this research is to find out the determinants of capital structure on manufacturing companies in Indonesia. The initial samples used in this research are 48 firm listed in Bursa Efek Indonesia (BEI) during the period 2004-2008. There are 5 variables, choosed as the measurements of capital structure, those are: Tangibility of Assets, Profitability, Firm Size, Growth Sales, and Growth Firm. This research uses multiple linear regressions as the analysis method. The statistic test find out that the independent variables, which are Profitability, Firm Size, and Growth Sales have an influence on capital structure. However, Tangibility of Assets and Growth Firm has no influence on capital structure. Another result from this research is Tangibility of Assets, Profitability, Firm Size, Growth Sales, and Growth Firm have an influence on capital structure simultaneously.