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arXiv · 2511.01823

The Inequity of Consumption-Based Tax Systems

Thiago Dias·José Roberto Iglesias·Sebastián Gonçalves
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Abstract

This study examines the lack of redistributive effectiveness of consumption-based tax systems with respect to social fairness. Through numerical simulations, we explore the wealth exchanges among economic agents subject to flat consumption taxes, comparing universal redistribution with optimal targeted approaches. The results demonstrate that consumption taxes exhibit inherent regressivity, disproportionately burdening the poorest 40% of households who contribute over half of total tax revenue for most tax rates. The findings challenge the equity of consumption taxes and provide quantitative insights for designing more fair fiscal policies.

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Thiago Dias, José Roberto Iglesias, Sebastián Gonçalves. 2025-11-03. The Inequity of Consumption-Based Tax Systems. https://arxiv.org/abs/2511.01823

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