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Optimal quantitative easing in a monetary union

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  • Serdar Kabaca
  • Renske Maas
  • Kostas Mavromatis
  • Romanos Priftis

Abstract

This paper explores the optimal allocation of government bond purchases within a monetary union, using a two-region DSGE model, where regions are asymmetric with respect to economic size and portfolio characteristics: the extent of substitutability between assets of different maturity and origin, asset home bias, and steady-state levels of government debt. An optimal quantitative easing (QE) policy under commitment does not only reflect different region sizes, but is also a function of these dimensions of portfolio heterogeneity. By calibrating the model to the euro area, we show that optimal QE favors purchases from the smaller region (Periphery instead of Core), given that the former faces stronger portfolio frictions. A fully optimal policy consisting of both the short-term interest rate and QE lifts the monetary union away from the zero lower bound faster than an optimal interest rate policy alone, which entails forward guidance. Â

Suggested Citation

  • Serdar Kabaca & Renske Maas & Kostas Mavromatis & Romanos Priftis, 2020. "Optimal quantitative easing in a monetary union," Working Papers 697, DNB.
    • Handle: RePEc:dnb:dnbwpp:697
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    1. Optimal quantitative easing in a monetary union
      by Christian Zimmermann in NEP-DGE blog on 2020-12-11 15:39:06

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    Keywords

    JEL classifications: . Working paper no.;

    JEL classification:

    • 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
    • F45 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Macroeconomic Issues of Monetary Unions

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