The purpose of this research is to examine the influence of corporate income taxes on the competitiveness of nations. Ample research on the competitiveness of nations exists, but the impact of corporate income taxes has never been investigated. A global trend of corporate income tax reform to ameliorate the competitiveness of nations arises at the moment, but it remained unclear and debated whether this motive could be justified or should be marked as vacuous. A quantitative dynamic panel data approach is employed in this research to test the hypothesis and a comparison is made between developed and emerging economies. The results indicate that corporate income taxation can form a motive to increase competitiveness for developed economies, but the influence remains insignificant for emerging economies.