The aim of this article is to give a comprehensive review of the border effect literature. The author demonstrates through a number of empirical results that state borders still obstruct commodity trade flows between countries significantly, even in the twenty first century’s globalized world market. Countries’ trade patterns show a massive bias toward domestic markets, which can be only partially justified by formal factors such as income differences, distances, tariffs, cultural or linguistic dissimilarities and different currencies. Controlling for all these factors does not abolish the hindering role of borders, which suggests that the preference for domestic partners is excessive. The paper analyses major gravity model specifications and estimation methods in order to shed light on solving the border puzzle.

Journal of Economic Literature (JEL) kódok: F14, F15