Intellectual capital is a new managerial notion that is adaptive to changing environmental conditions and provides advantages in highly competitive marketplace. It is contextualized in the literature with the sub-elements: structural capital, human capital and relation capital. Even though this notion found wide interest in academia, the impacts of its sub-elements on business performance haven’t been studied enough. In this study we aim to fill this gap. For this reason, the relationships between structural capital and qualitative and quantitative performance have been investigated. For analysis we preferred Structural Equation Model (SEM) using Lisrel 8.51. According to the findings, structural capital affects the qualitative performance positively and explains 82% of the change in qualitative performances of companies; while explaining 28 % of the positive change.