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Navigating by Falling Stars: Monetary Policy with Fiscally Driven Natural Rates

Author

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  • Rodolfo G. Campos
  • Jesús Fernández-Villaverde
  • Galo Nuño
  • Peter Paz

Abstract

We study a new type of monetary-fiscal interaction in a heterogeneous-agent New Keynesian model with a fiscal block. Due to household heterogeneity, the stock of public debt affects the natural interest rate, forcing the central bank to adapt its monetary policy rule to the fiscal stance to guarantee that inflation remains at its target. There is, however, a minimum level of debt below which the steady-state inflation deviates from its target due to the zero lower bound on nominal rates. We analyze the response to a debt-financed fiscal expansion and quantify the impact of different timings in the adaptation of the monetary policy rule, as well as the performance of alternative monetary policy rules that do not require an assessment of the natural rates. We validate our findings with a series of empirical estimates.

Suggested Citation

  • Rodolfo G. Campos & Jesús Fernández-Villaverde & Galo Nuño & Peter Paz, 2024. "Navigating by Falling Stars: Monetary Policy with Fiscally Driven Natural Rates," NBER Working Papers 32219, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:32219
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    Cited by:

    1. Jonathon Hazell & Stephan Hobler, 2024. "Do Deficits Cause Inflation? A High Frequency Narrative Approach," Discussion Papers 2439, Centre for Macroeconomics (CFM).
    2. Grancini, Stefano, 2025. "Public debt, iMPCs & fiscal policy transmission," Working Paper Series 3106, European Central Bank.
    3. Challe, Edouard & Matvieiev, Mykhailo, 2024. "On natural interest rate volatility," European Economic Review, Elsevier, vol. 167(C).
    4. Nickel, Christiane & Kilponen, Juha & Moral-Benito, Enrique & Koester, Gerrit & Ciccarelli, Matteo & Enders, Almira & Holton, Sarah & Landau, Bettina & Venditti, Fabrizio & Bobeica, Elena & Brand, Cla, 2025. "A strategic view on the economic and inflation environment in the euro area," Occasional Paper Series 371, European Central Bank.

    More about this item

    JEL classification:

    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
    • 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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