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Inequality and the zero lower bound

Author

Listed:
  • Fernández-Villaverde, Jesús
  • Marbet, Joël
  • Nuño, Galo
  • Rachedi, Omar

Abstract

This paper studies how household inequality shapes the effects of the zero lower bound (ZLB) on nominal interest rates on aggregate dynamics. To do so, we consider a heterogeneous agent New Keynesian (HANK) model with an occasionally binding ZLB and solve for its fully nonlinear stochastic equilibrium using a novel neural network algorithm. In this setting, changes in the monetary policy stance influence households’ precautionary savings by altering the frequency of ZLB events. As a result, the model features monetary policy non-neutrality in the long run. The degree of long-run non-neutrality, i.e., by how much monetary policy shifts real rates in the ergodic distribution of the model, can be substantial when we combine low inflation targets and high levels of wealth inequality.

Suggested Citation

  • Fernández-Villaverde, Jesús & Marbet, Joël & Nuño, Galo & Rachedi, Omar, 2025. "Inequality and the zero lower bound," Journal of Econometrics, Elsevier, vol. 249(PC).
    • Handle: RePEc:eee:econom:v:249:y:2025:i:pc:s0304407624001647
    DOI: 10.1016/j.jeconom.2024.105819
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    Keywords

    Heterogeneous agents; HANK models; Neural networks; Nonlinear dynamics;
    All these keywords.

    JEL classification:

    • D31 - Microeconomics - - Distribution - - - Personal Income and Wealth Distribution
    • E12 - Macroeconomics and Monetary Economics - - General Aggregative Models - - - Keynes; Keynesian; Post-Keynesian; Modern Monetary Theory
    • E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Interest Rates: Determination, Term Structure, and Effects
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies

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