Optimal fiscal policy in incomplete market business cycle economies

Luis G. Bettoni and Marcelo Santos

The Quarterly Review of Economics and Finance, 2023, vol. 89, issue C, 218-226

Abstract: In this paper, we study how a government should set its fiscal instruments in order to provide insurance to individuals and deal with inequality. We quantitatively evaluate the role of public debt and its interaction with progressive income taxation. To guide our assessment, we develop a DSGE model with incomplete markets that embeds two empirical relevant features that have not been considered by the literature: cyclical idiosyncratic risk and the extensive margin of labor supply. We calibrate the model to be consistent with the micro and macro evidence for the US economy. We study the importance of time-varying idiosyncratic risk and labor supply elasticity in determining optimal policies by considering two nested versions of the model that shut down one feature at a time. We find that considering both ingredients together significantly increases the optimal debt to output ratio. In addition, we show that the model generates a positive relationship between public debt and income tax progressivity, consistent to what is observed in the data.

Keywords: Public debt; Cyclical idiosyncratic risk; Precautionary savings; Indivisible labor; Progressive taxation (search for similar items in EconPapers)
Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:eee:quaeco:v:89:y:2023:i:c:p:218-226

DOI: 10.1016/j.qref.2023.03.011

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