This paper aims to introduce a qualitative indicator to measure innovation performance of Turkish firms by using firm-level data collected by Turkish Statistical Institute (TURKSTAT) in 2008 and 2009. We propose a new indicator to measure the innovation performance which is simply based on the perception of firms regarding to the impacts of innovation. In order to create performance indicators, we conduct a factor analysis to group the firms' perceptions on the impacts of innovation. Factor analysis gives us product and process-oriented impacts of innovation. There are significant differences among product innovators, process innovators and firms engaged in both product and process innovations with respect to their perceptions on product and process-oriented impacts of innovation. Among these three groups, product-and process-oriented impacts provide a highest value for the firms that perform both product and process innovations. As far as the link between firm characteristics and the impact of innovation is considered, there is a significant difference between small and large firms with respect to their perceptions on product-oriented impact of innovation. While product-oriented impact is larger for small firms, large firms focus more on process-oriented impact. Anova results also indicate that perceptions on process-oriented impact significantly direr among exporter firms, domestic market-oriented firms and firms being active in internal and external markets. Process-oriented impact generates results in favor of exporting firms.