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Shocks, Frictions, and Inequality in US Business Cycles

Christian Bayer, Benjamin Born, Ralph Luetticke

American Economic Review · 2024 · Volume 114 · Issue 5

DOI: 10.1257/aer.20201875

Abstract

We show how a heterogeneous agent New Keynesian (HANK) model with incomplete markets and portfolio choice can be estimated in state space using a Bayesian approach. To render estimation feasible, the structure of the economy can be exploited and the dimensionality of the model automatically reduced based on the Bayesian priors. We apply this approach to analyze how much inequality matters for the business cycle and vice versa. Even when the model is estimated on aggregate data alone and with a set of shocks and frictions designed to match aggregate data, it broadly reproduces observed US inequality dynamics.

Keywords

Personal Income, Wealth, and Their Distributions, Incomplete Markets, General Aggregative Models: Keynes, Keynesian, Post-Keynesian, Modern Monetary Theory, Business Fluctuations, Cycles, Monetary Policy, Fiscal Policy

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