Poterba is known for his research on how
taxation affects the economic decisions of households and firms. His research has emphasized the effect of taxation on the financial behavior of households, particularly their saving and portfolio decisions. He is also interested in the analysis of tax-deferred retirement saving programs such as 401(k) plans and in the role of annuities in financing retirement consumption. He has also been Director of the NBER Public Economics Research Program since 1991. He has served as a member of the President's Advisory Panel on Federal Tax Reform and edited the
Journal of Public Economics, the leading international journal for research on taxation and government spending, between 1997 and 2006. He has edited several economics journals. ==Honors==