The topic of this thesis is the internal market and the fundamental freedoms of movement, on which the internal market is based. The fundamental freedoms are the free movement of people, goods, services and capital in the internal market. The establishment of the internal market is one of the main tasks of the European Union, and its development was a long and complex process. The importance of the internal market stems from the benefits provided to the citizens of the European Union, as well as to the economic operators. The issues that arise are the harmonisation of national legislations, cultural differences between the Member States and similar, and it is precisely those problems that prevent the exploitation of the full potential of the internal market. The need for an internal market on the European territory was present in the distant past when crossing of borders was a long and exhausting process, and international business relations were restricted by various customs controls, quotas, et cetera. Today, due to the internal market, travel to the other Member States is extremely simple and fast, and few can imagine life without international exchange. There are several benefits based on the internal market, and its further growth is essential for the contemporary era and business. It is evident that the development of the internal market depends on the freedoms of movement. Therefore, the main objective is to establish four freedoms of movement that will function smoothly and thus provide complete freedom of movement in the entire European Union.