A Sensitivity Analysis of the Elasticity of Taxable Income: Working Paper 2008-01

This paper applies the methods of Gruber and Saez (2002) to a panel of tax returns spanning years 1979 through 2001 in order to examine the sensitivity of the elasticities of taxable and broad income to an array of factors. The paper finds that Gruber and Saez’s approach yields an estimated elasticity of taxable income (ETI) for the 1990s that is about half the size of my corresponding estimate for the 1980s. The paper finds that weighting regression results by income not only has a substantial impact on the estimates, but also results in overall estimates that are influenced by a small