MALIYE DERGISI, sa.166, ss.115-126, 2014 (ESCI)
The aim of this study is to determine the effects of public tax incentives on firms' R&D expenditures. In this context, the tax expenditures of the manufacturing firms which are registered in Borsa Istanbul (Istanbul Stock Exchange) were examined for the years when the tax incentives were established; 2001, 2004 and 2008. As a result of this descriptive research, we observed that the amount average R&D expenditures decreased in 2001 but on the other hand they increased in 2004 and 2008. We estimate that the other economic and political issues happened these years might be the reasons of the different effects of these incentives.