Horizontal Equity: New Measures, Unclear Principles

The Role of Inequality in Tax Policy, American Enterprise Institute, 2000

27 Pages Posted: 22 Jun 2000  

Louis Kaplow

Harvard Law School; National Bureau of Economic Research (NBER)

Multiple version iconThere are 2 versions of this paper

Date Written: March 2000

Abstract

Alan Auerbach and Kevin Hassett offer a new measure of horizontal equity (HE) that is designed to overcome deficiencies in prior indexes. There is, however, a fundamental problem that their effort shares with their predecessors' attempts: the underlying rationale for pursuing HE at the expense of individuals' well-being is never stated. Moreover, as discussed here, it appears that no plausible rationale can be given because the essence of HE involves giving weight to morally arbitrary factors. Indeed, pursuing HE may even conflict with the Pareto principle. On reflection, it seems that the appeal of HE is specious: HE does not possess intrinsic value, but rather is a rough proxy concept that may signal various ways in which unequal treatment of individuals can lead to a loss in social welfare. Unfortunately, HE indexes are not very useful even with regard to HE's proxy role.

JEL Classification: D63, H23, H24

Suggested Citation

Kaplow, Louis, Horizontal Equity: New Measures, Unclear Principles (March 2000). The Role of Inequality in Tax Policy, American Enterprise Institute, 2000. Available at SSRN: https://ssrn.com/abstract=224944 or http://dx.doi.org/10.2139/ssrn.224944

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