IDEAS home Printed from https://ideas.repec.org/a/eee/dyncon/v184y2026ics0165188926000205.html

Liquidity trap and optimal monetary policy: Evaluations for U.S. monetary policy from 2020 to 2023

Author

Listed:
  • Hasui, Kohei
  • Sugo, Tomohiro
  • Teranishi, Yuki

Abstract

This paper shows that the recent Fed’s exit strategy reflects the conduct of optimal monetary policy in a liquidity trap. We use the conventional new Keynesian model for the U.S economy, incorporating recent inflation persistence. As observed in the Fed’s liftoff policy, optimal monetary policy shows inflation overshooting and prolonged zero interest rate policy under high inflation beyond the 2 percent target. With greater persistence of inflation, inflation overshooting becomes larger, yielding better consistency with the data. Our analysis also indicates the presence of a forward guidance puzzle in the Fed’s exit policy. Under optimal monetary policy, the discounted Euler equation successfully dampens forward guidance effects and better describes the output gap.

Suggested Citation

  • Hasui, Kohei & Sugo, Tomohiro & Teranishi, Yuki, 2026. "Liquidity trap and optimal monetary policy: Evaluations for U.S. monetary policy from 2020 to 2023," Journal of Economic Dynamics and Control, Elsevier, vol. 184(C).
    • Handle: RePEc:eee:dyncon:v:184:y:2026:i:c:s0165188926000205
    DOI: 10.1016/j.jedc.2026.105274
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0165188926000205
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.jedc.2026.105274?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to

    for a different version of it.

    More about this item

    Keywords

    ;
    ;
    ;
    ;

    JEL classification:

    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • 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
    • E61 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Policy Objectives; Policy Designs and Consistency; Policy Coordination

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:dyncon:v:184:y:2026:i:c:s0165188926000205. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.elsevier.com/locate/jedc .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.