Home country trade effects of outward FDI : an analysis of the Portuguese case, 1996-2007

Given the increased internationalisation of the Portuguese economy through outward Foreign Direct Investment (FDI), particularly on the Portuguese-speaking countries, our main objective is to discuss the empirical relationship between this outward FDI and trade. We use panel data analysis within a framework of gravity equations for exports and imports, with a sample composed by EU-15, U.S.A., Brazil, Angola, Japan and China, for the period 1996-2007. Our main conclusion is that the empirical evidence for Portugal is consistent with a substitution hypothesis between direct investment abroad and trade, and consequently we detect a negative trade balance effect with the majority of countries in our sample, excepting Angola and, in a lesser extension, Spain.