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兼顾分配效应的成本收益分析

Distributionally sensitive cost-benefit analysis
Journal of Public Economics · 2025 · Robin Boadway、Michael Smart

中文摘要

我们提出一种公共政策成本收益分析方法,用于识别改革受损者通过所得税调整获得补偿时潜在的帕累托改进。当改革能够降低商品市场和劳动力市场的总超额负担时,改革是可取的。这一条件等价于个人补偿变差的加权总和,其中权重反映政策改革对个人劳动收入的影响,而非对向其进行转移支付的边际社会评价。我们识别出一些情形:尽管存在对不平等的担忧,分配权重仍随个人收入增加而上升。

Abstract

We propose a method for cost-benefit analysis of public policies that identifies potential Pareto improvements when losers from a reform are compensated through income tax changes. Reforms are desirable when they reduce aggregate excess burden in commodity and labor markets. This condition is equivalent to a weighted sum of individual compensating variations, where weights reflect the impacts of the policy reform on individuals’ labor incomes, rather than marginal social valuations of transfers to them. We identify cases in which distributional weights are increasing in individual incomes, despite inequality concerns.
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