In today's age of financial globalization, cohesion and openness of economies, the increasing demand for foreign investment is not surprising. Over the last twenty years, foreign direct investment has played an important role, becoming an important source of external financing for developing countries, especially transition countries. The main feature of foreign direct investment is their long-term character, and we mainly divide them into two types: so-called “greenfield investments” that create new assets and production, and “brownfield investments” that arise from the acquisition and purchase of existing manufacturing companies. Foreign direct investments have an impact on certain macroeconomic indicators such as GDP, employment, investment and foreign trade, and the impact will depend on the capacity and characteristics of the recipient countries. Croatia has attracted considerable levels of foreign capital, however, most of the capital is invested in existing capacities, while investments in new plants (greenfield investments) are almost absent. As a result, Croatia has not yet reached the level of Central European countries. The paper discusses the effects of foreign direct investment on the Croatian economy, analyzes the takeover of INA by MOL, and posits secondary objectives of the paper, which is to discover the effects of the takeover of INA on the company itself and on the Croatian economy.