The purpose of this research is to find the influence of firm size, growth opportunity, profitability, business risk, effective tax rate, asset tangibility, firm age and liquidity on companies capital structure either simultaneously and partially. The research objects used is property and real estate company which listed in Indonesian Stock Exchange in 2009-2014. This research used a purposive sampling technique in determining the research sample. The number of companies chosen as the sample in 31 company of 55 companies registered in property and real estate sector. This research was included in the explanatory research using quantitative approach. Data analysis method used in this research is multiple linear regression analysis. The result showed that in simultaneously firm size, growth opportunity, profitability, business risk, effective tax rate, asset tangibility, firm age and liquidity has a significant effect. Firm size, profitability, effective tax rate and firm age partially has a positive and significant effect on the capital structure, growth opportunity, business risk and asset tangibility partially has a negative and significant effect on the capital structure, otherwise liquidity partially hasn't significant effect on the capital structure.