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递归偏好下的最优财政政策

Optimal Fiscal Policy with Recursive Preferences
Review of Economic Studies · 2018 · Anastasios G. Karantounias

中文摘要

我研究了递归效用(宏观金融中一种流行的偏好设定)对最优财政政策设计的影响。标准的拉姆齐税收平滑处方被大幅改变。计划者通过在糟糕时期减少征税、在良好时期增加征税来过度保险,从而缓解冲击的影响。在跨期边际上,存在引入扭曲的新激励,可能导致事前的资本补贴。总体而言,最优政策要求将债务收益作为财政吸收器加以更大力度的运用,从而得出结论:实际的财政政策比我们此前认为的还要糟糕。

Abstract

I study the implications of recursive utility, a popular preference specification in macro-finance, for the design of optimal fiscal policy. Standard Ramsey tax-smoothing prescriptions are substantially altered. The planner over-insures by taxing less in bad times and more in good times, mitigating the effects of shocks. At the intertemporal margin, there is a novel incentive for introducing distortions that can lead to an ex-ante capital subsidy. Overall, optimal policy calls for a much stronger use of debt returns as a fiscal absorber, leading to the conclusion that actual fiscal policy is even worse than we thought.
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