EN
Trade on the EU single internal market is regulated by a customs union established on 1st July, 1968. It has an internal dimension, based on one of the freedoms of the common market, i.e. the free movement of goods, as well as an external one, connected with the common trade policy, which involves, among others, introduction of the common customs duty tariff in import. The aim of the article is to show the trade effects of Poland's inclusion into the EU single internal market for goods a decade after Poland became a member of the EU. The integration processes, particularly the creation of the common market without internal customs borders, are a major influence in Poland’s trade exchange, both within the union and outside it. Therefore, it is in this area that the impact of the accession was most readily noticeable.