The article analyzes the impact of knowledge generating investments on the economic growth. It was found that the main investment cash flows are intangible, education, research and development costs. Since in Lithuania the core capital is mainly formed from tangible assets and intangible assets constitute only a small part of an emerging capital, the largest part of investment goes to education, research and development, while the smallest one – to intangible assets. The research is intended to support the impact of knowledge generating investments impact on GDP growth, interconnection and level of significance.