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Estimating taxable income responses with elasticity heterogeneity
Journal article   Peer reviewed

Estimating taxable income responses with elasticity heterogeneity

Anil Kumar and Che-Yuan Liang
Journal of public economics, Vol.188, p.104209
08/01/2020
DOI: 10.1016/j.jpubeco.2020.104209
url
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-320178View
Open Access

Abstract

We explore elasticity heterogeneity in the estimation of the elasticity of taxable income (ETI) and propose potentially valid instruments. We show that previously used instruments are not valid and yield weighted averages of ETIs of different taxpayers plus a bias. Using the NBER tax panel for 1979–1990, we find a weighted average ETI of 0.57 when using all available variation in budget set changes provided by the tax reforms in the data. Our results also demonstrate that elasticity heterogeneity is an important explanation for the remarkable divergence of estimates in the previous literature. •We propose valid instruments for estimating the ETI (elasticity of taxable income) when the ETI varies across taxpayers.•We show that previous instruments are not valid.•Using the NBER tax panel for 1979-1990, we estimate a weighted average ETI of 0.57.•We find that ETI heterogeneity explains much of the remarkable divergence of ETI estimates in the previous literature.
Elasticity heterogeneity Elasticity of taxable income Panel data Tax reforms

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