This research intend to understand how much efficiency influence to intellectual capital to return on investment. By using data from 23 manufacturer companies listed in Indonesian Stock Exchange (ISX) in 2005 – 2007 period and determined by efficiency to third of components; capital employee efficiency (VACA), human capital efficiency (VAHU) and structural capital efficiency (STVA). Statistic method in this paper by double linear regression to understand how much influences intellectual capital to return on investment.

Based on calculation conducted by double linear regression we will find regression equation that is  Y = 0,812 + 14,227x₁ + 0,651x₂ – 0,041x₃ showing that there is influence intellectual capital determined by efficiency to third of component : capital employee efficiency (VACA), human capital efficiency (VAHU) and structural capital efficiency (STVA) with return on investment. How ever determinant coefficient is 84,9% and the remain 15,1% influenced by other factors. Whereas from hypothesis test can be found that capital employee efficiency (VACA) has significant impact to return on investment, human capital efficiency (VAHU) not have significant to return on investment, and structural capital efficiency (STVA) not have significant to return on investment to 23 manufacture companies which be include category calculated indeks kompas 100 listed in Indonesian Stock Exchange.