This Working Paper presents the methodological progress made in projecting international migration. The new methodology is notably based on an analysis of migration flows per nationality and on statistics on reasons for migrating, in order to assess whether economic variables constitute relevant determinants of migration. If they do, the impact of economic determinants on immigration is estimated using econometric methods. The methodology also takes into account the increasing globalization and mobility as well as the expected growth of the global population which boost international migration flows (immigration and emigration). Finally, it grants more stability to the long-term migration projections and, therefore, to the population projections; the annual revisions of long-term migration will be less dependent on the short-term evolution of migration flows.