This final thesis examines the Croatian system of economic relations with foreign countries with a focus on the foreign exchange system, customs procedures, trade policy and credit relations. The objectives of the research include the analysis of the Croatian foreign exchange system and its impact on the economy, the study of legislative regulations related to foreign exchange transactions, the analysis of the trade balance and foreign exchange flows and their connection with the economic performance of the country, the discussion of customs procedures and trade policy of Croatia in the international context, and the analysis of credit relations. with foreign countries and their impact on the economy. All research aims to better understand the complex economic ties between Croatia and the international community and to provide new insights and perspectives for the development of Croatia's economic policy. All these research components together aim to provide a deeper insight into the complex economic ties between Croatia and the world. Through the analysis of these aspects, the work tries to offer new insights and perspectives that can serve as a basis for the further development of Croatia's economic policy in a global context.