Abstract
Contributing to an important literature on the side effects of fiscal policy, this paper employs a treatment effect analysis to show that fiscal rules (FR) have significant side effects on income inequality (IQ). Economically meaningful, this favorable causal direct effect is robust to many alternative specifications. Nevertheless, not all FR are alike: balanced budget and debt rules decrease IQ, contrary to expenditure rules that increase it. Finally, the effect of FR on IQ is found to be subject to heterogeneity related to various factors. Given the current upward global IQ trends, our results provide insightful evidence for governments of countries aiming at reducing IQ.
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