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The rise of market power and Ramsey‐optimal policy implications

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  • Mehrab Kiarsi

Abstract

De Loecker, Eeckhout, and Unger document that since 1980 aggregate markups in the U.S. economy have significantly increased from 21% above cost to 61% now. In light of this evidence, this paper revisits optimal fiscal and monetary policy recommendations of standard New Keynesian models and shows that under empirically relevant calibrations of market power they radically change: the optimal inflation rate becomes significantly positive and its optimal volatility sharply rises. Moreover, inflation behaves like a random walk in response to unexpected fiscal shocks. Thus, price stability ceases to be the optimal policy outcome.

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  • Mehrab Kiarsi, 2021. "The rise of market power and Ramsey‐optimal policy implications," Economic Notes, Banca Monte dei Paschi di Siena SpA, vol. 50(1), February.
    • Handle: RePEc:bla:ecnote:v:50:y:2021:i:1:n:e12175
    DOI: 10.1111/ecno.12175
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    References listed on IDEAS

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    1. Gabriele Camera & Yili Chien, 2016. "Two Monetary Models with Alternating Markets," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 48(5), pages 1051-1064, August.
    2. Jan De Loecker & Jan Eeckhout & Gabriel Unger, 2020. "The Rise of Market Power and the Macroeconomic Implications [“Econometric Tools for Analyzing Market Outcomes”]," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 135(2), pages 561-644.
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    4. Schmitt-Grohe, Stephanie & Uribe, Martin, 2007. "Optimal simple and implementable monetary and fiscal rules," Journal of Monetary Economics, Elsevier, vol. 54(6), pages 1702-1725, September.
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    6. Ricardo Lagos & Randall Wright, 2005. "A Unified Framework for Monetary Theory and Policy Analysis," Journal of Political Economy, University of Chicago Press, vol. 113(3), pages 463-484, June.
    7. Schmitt-Grohe, Stephanie & Uribe, Martin, 2004. "Optimal fiscal and monetary policy under imperfect competition," Journal of Macroeconomics, Elsevier, vol. 26(2), pages 183-209, June.
    8. Schmitt-Grohé, Stephanie & Uribe, Martín, 2010. "The Optimal Rate of Inflation," Handbook of Monetary Economics, in: Benjamin M. Friedman & Michael Woodford (ed.), Handbook of Monetary Economics, edition 1, volume 3, chapter 13, pages 653-722, Elsevier.
    9. Siu, Henry E., 2004. "Optimal fiscal and monetary policy with sticky prices," Journal of Monetary Economics, Elsevier, vol. 51(3), pages 575-607, April.
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