In this article the author analyses different possibilities of how, with the help of fiscal stimuli, to increase national economic competitiveness in comparison with other countries. The author has developed a methodological approach to analyse the efficiency of fiscal stimuli to increase national economic competitiveness. This article puts forward competitive tax policy, investment in business and knowledge infrastructure, fiscal support for knowledge based businesses (in the form of credits and guarantees), support of the ability to export, EU structural funds and public procurement as significant fiscal stimuli that foster innovation.