Capital is very important for the firm to operate the activities and also expanding the
operation, so the firm must pay more attention for the capital structure. Capital structure is the
proportion between uses debt or equity. In specifying optimal capital structure, we must
consider many things influencing it. The purpose of this research is to prove the effect of
profitability, firm size, non debt tax shield, dividen payout ratio, and liquidity of manufacture
firms listed on BEI with periods 2007-2010 using some indicator to each research variable …