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Optimal Monetary Policy with Collateralized Household Debt and Borrowing Constraints

In: Asset Prices and Monetary Policy

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  • Tommaso Monacelli

Abstract

We study optimal monetary policy in an economy with nominal private debt, borrowing constraints and price rigidity. Private debt reflects equilibrium trade between an impatient borrower, who faces an endogenous collateral constraint, and a patient saver, who engages in consumption smoothing. Since inflation can positively affect borrower's net worth, monetary policy optimally balances the incentive to offset the price stickiness distortion with the one of marginally relaxing the borrower's collateral constraint. We find that the optimal volatility of inflation is increasing in three key parameters: (i) the borrower's weight in the planner's objective function; (ii) the borrower's impatience rate; (iii) the degree of price flexibility. In general, however, deviations from price stability are small for a small degree of price stickiness. In a two-sector version of our model, in which durable price movements can directly affect the ability of borrowing, the optimal volatility of (non-durable) inflation is more sizeable. In our context, and relative to simple Taylor rules, the Ramsey-optimal allocation entails a partial smoothing of real durable goods prices.
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Suggested Citation

  • Tommaso Monacelli, 2008. "Optimal Monetary Policy with Collateralized Household Debt and Borrowing Constraints," NBER Chapters,in: Asset Prices and Monetary Policy, pages 103-146 National Bureau of Economic Research, Inc.
  • Handle: RePEc:nbr:nberch:5370
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    Cited by:

    1. Lambertini, Luisa & Mendicino, Caterina & Teresa Punzi, Maria, 2013. "Leaning against boom–bust cycles in credit and housing prices," Journal of Economic Dynamics and Control, Elsevier, vol. 37(8), pages 1500-1522.
    2. José Suárez-Lledó, "undated". "Monetary Policy with Heterogeneous Collateralized Borrowing," Working Papers 374, Barcelona Graduate School of Economics.
    3. Stéphane Auray & Paul Gomme & Shen Guo, 2013. "Nominal Rigidities, Monetary Policy and Pigou Cycles," Economic Journal, Royal Economic Society, vol. 0, pages 455-473, May.
    4. T. Bennani & C. Couaillier & A. Devulder & S. Gabrieli & J. Idier & P. Lopez & T. Piquard & V. Scalone, 2017. "An analytical framework to calibrate macroprudential policy," Working papers 648, Banque de France.
    5. Meral Karasulu, 2008. "Stress Testing Household Debt in Korea," IMF Working Papers 08/255, International Monetary Fund.
    6. Rubio, Margarita & Carrasco-Gallego, José A., 2016. "The new financial regulation in Basel III and monetary policy: A macroprudential approach," Journal of Financial Stability, Elsevier, vol. 26(C), pages 294-305.
    7. repec:eme:isetez:s1571-038620150000024025 is not listed on IDEAS
    8. Rubio, Margarita, 2014. "Housing-market heterogeneity in a monetary union," Journal of International Money and Finance, Elsevier, vol. 40(C), pages 163-184.
    9. Rubio, Margarita & Carrasco-Gallego, José A., 2016. "Coordinating macroprudential policies within the Euro area: The case of Spain," Economic Modelling, Elsevier, vol. 59(C), pages 570-582.
    10. Jordi Galí & Mark Gertler, 2007. "Macroeconomic Modeling for Monetary Policy Evaluation," Journal of Economic Perspectives, American Economic Association, vol. 21(4), pages 25-46, Fall.
    11. Kajuth, Florian, 2010. "The role of liquidity constraints in the response of monetary policy to house prices," Journal of Financial Stability, Elsevier, vol. 6(4), pages 230-242, December.
    12. Federico di Pace, 2008. "Revisiting the Comovement Puzzle: the Input-Output Structure as an Additional Solution," Birkbeck Working Papers in Economics and Finance 0807, Birkbeck, Department of Economics, Mathematics & Statistics.
    13. Rubio, Margarita & Carrasco-Gallego, José A., 2014. "Macroprudential and monetary policies: Implications for financial stability and welfare," Journal of Banking & Finance, Elsevier, vol. 49(C), pages 326-336.
    14. Margarita Rubio & José A. Carrasco-Gallego, 2015. "Macroprudential and Monetary Policy Rules: a Welfare Analysis," Manchester School, University of Manchester, vol. 83(2), pages 127-152, March.
    15. Silvo, Aino, 2016. "The interaction of monetary and macroprudential policies in economic stabilisation," Research Discussion Papers 1/2016, Bank of Finland.
    16. repec:bof:bofrdp:urn:nbn:fi:bof-201602101026 is not listed on IDEAS
    17. Ruy Lama & Juan Pablo Medina, 2004. "Optimal Monetary Policy in a Small Open Economy Under Segmented Asset Markets and Sticky Prices," Working Papers Central Bank of Chile 286, Central Bank of Chile.
    18. Nikolay Hristov & Oliver Hülsewig & Timo Wollmershäuser, 2014. "Financial Frictions and Inflation Differentials in a Monetary Union," Manchester School, University of Manchester, vol. 82(5), pages 549-595, September.
    19. Tiziana Assenza & Michele Berardi & Domenico Delli Gatti, 2015. "Was Bernanke Right? Targeting Asset Prices May : not: be a Good Idea After All," International Symposia in Economic Theory and Econometrics,in: Monetary Policy in the Context of the Financial Crisis: New Challenges and Lessons, volume 24, pages 451-496 Emerald Publishing Ltd.
    20. Paolo Angelini & Stefano Neri & Fabio Panetta, 2011. "Monetary and macroprudential policies," Temi di discussione (Economic working papers) 801, Bank of Italy, Economic Research and International Relations Area.
    21. Assenza, T. & Berardi, M. & Delli Gatti, D., 2009. "Asset Prices and Monetary Policy: A New View of the Cost Channel," CeNDEF Working Papers 09-17, Universiteit van Amsterdam, Center for Nonlinear Dynamics in Economics and Finance.

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    JEL classification:

    • E24 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Employment; Unemployment; Wages; Intergenerational Income Distribution; Aggregate Human Capital; Aggregate Labor Productivity
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit

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