Sustaining Fiscal Policy Through Immigration

This paper explores the fiscal implications of immigration to the US and argues that immigration policy should be viewed as a vital part of fiscal policy. In particular a case is made that skills and age at the time of arrival are of great importance for the cost-benefit calculation of new immigrants. Using a calibrated general equilibrium overlapping generations model, which explicitly accounts for key differences between immigrants and natives, Social Security and the demographic transition, I investigate if an immigration policy reform alone could resolve the fiscal problems associated with the ageing of the baby boom generation I find that such policies exist and are characterized by increased inflows of working-age high and medium skilled immigrants. One particular feasible policy involves admitting 1.6 million 40-44 year-old high skilled immigrants annually compared to a total of 1.1 million today. In contrast an income tax hike of 4.4% points would be required if future fiscal problems were to be solved by a once and for all tax reform. To further illuminate the fiscal impact of immigration I compute the net government gain in present value terms of admitting one additional immigrant. This figure varies considerably with age and skills and reaches a maximum of seven times GNP per capita for high skilled 40-44 year-old immigrants. In contrast new immigrants represent on average a small net gain of $7,400 or 0.3 times GNP per capita.