Optimal Marginal and Average Income Taxation under Maxi-min

Robin Boadway and Laurence Jacquet

No 2006020, Discussion Papers (ECON - Département des Sciences Economiques) from Université catholique de Louvain, Département des Sciences Economiques

Abstract: Using the Mirrlees optimal income tax model with a maxi-min social welfare function, we derive conditions for a decreasing marginal tax rate throughout the skill distribution, a strictly concave tax function in income and a single-peaked average tax schedule. With additive preferences and a constant labor supply elasticity, marginal tax rates are decreasing below the modal skill level, and will also decrease above the mode if aggregate skills are non-decreasing with the skill level. In this case and with a bounded skill distribution or with a constant hazard rate, the tax function is strictly concave in income and the average tax rate single-peaked. When quasilinear utility functions apply in either consumption or leisure, under fairly mild restrictions on the truncated or untruncated distribution function, marginal tax rates are decreasing in skill and the average tax profile is sinlgle-peaked. The distribution of skills has the same qualitative influence for either case of quasilinearity. These results continue to hold when there is bunching at the bottom due to a binding non-negativity constraint. We also illustrate how relaxing the assumption of constant elasticity of labor supply, generally used in the literature, modifies the results.

Keywords: maxi-min; optimal income taxation (search for similar items in EconPapers)
JEL-codes: H21 (search for similar items in EconPapers)
Pages: 39
Date: 2006-05-01
New Economics Papers: this item is included in nep-pbe and nep-upt
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Related works:
Journal Article: Optimal marginal and average income taxation under maximin (2008)
Working Paper: Optimal Marginal And Average Income Taxation Under Maxi-min (2006)
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Persistent link: https://EconPapers.repec.org/RePEc:ctl:louvec:2006020

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