Equipping immigrants: migration flows and capital movements in small open economies

This paper explores the extent to which migration-related capital flows can explain the variation in investment rates and current and capital account imbalances in OECD countries. We begin with a general equilibrium model of a small open economy in which migration is exogenous. Migrants must be equipped with capital, and the resulting demands for capital will generate cross-border flows of capital. Next, we move to an empirical exercise in which we allow both capital and labor flows to be endogenous. We test this model using data from a panel of OECD countries. We conclude that migration flows do in fact generate substantial matching capital flows. We calculate that increased migration may have accounted for as much as one-fifth of the increase in the US current account deficit since 1960. Copyright Kiel Institute 2013