Tax Reform and the Laffer Curve

Ana Gamarra Rondinel, James Hines and José F. Sanz-Sanz

No 34059, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: This paper evaluates Laffer curves produced by reforms to nonlinear income taxes, focusing on individual taxpayers. A reform puts a taxpayer on the “wrong” side of the Laffer curve if it increases their tax burden while reducing tax payments. There always exist potential reforms with this property – and in particular, tax increases restricted to high-income taxpayers are guaranteed to consign some to the wrong side of the Laffer curve. The original design of the 2024 Australian tax reform would have put 15% of the taxpaying population on the wrong side of the Laffer curve, though subsequent modifications reduced this to 5%. Standard tax progressivity measures that ignore the endogeneity of taxable income generally understate the redistributive impact of progressive tax reforms.

JEL-codes: H21 H24 (search for similar items in EconPapers)
Date: 2025-07
Note: PE
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