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Unconventional monetary policy and debt sustainability in Japan

Author

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  • Alberola, Enrique
  • Cheng, Gong
  • Consiglio, Andrea
  • Zenios, Stavros A.

Abstract

We adapt to the Japanese case a model of stochastic debt sustainability within a monetary policymaking framework. The model incorporates the effects of unconventional monetary policy and its potential unwinding on sovereign debt dynamics. A scenario tree represents stochastic and correlated macroeconomic and fiscal variables, and a coherent risk measure allows to draw probabilistic inferences on sustainability. We calibrate the model to the Quantitative and Qualitative Easing (QQE) that Bank of Japan launched in 2013. Using a retrospective analysis, we find a large favourable effect of the QQE on sovereign debt dynamics. Forward-looking simulations under different exit strategies show that the termination and unwinding of the QQE could raise debt sustainability concerns. A sharp tightening of global financial conditions could have a similar negative impact on debt dynamics, requiring a fiscal adjustment to keep debt sustainable.

Suggested Citation

  • Alberola, Enrique & Cheng, Gong & Consiglio, Andrea & Zenios, Stavros A., 2023. "Unconventional monetary policy and debt sustainability in Japan," Journal of the Japanese and International Economies, Elsevier, vol. 69(C).
    • Handle: RePEc:eee:jjieco:v:69:y:2023:i:c:s0889158323000291
    DOI: 10.1016/j.jjie.2023.101274
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    More about this item

    Keywords

    Debt sustainability analysis (DSA); Risk management; Quantitative easing; Yield Curve Control; Unconventional monetary policy; CVaR optimization;
    All these keywords.

    JEL classification:

    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • H63 - Public Economics - - National Budget, Deficit, and Debt - - - Debt; Debt Management; Sovereign Debt
    • H68 - Public Economics - - National Budget, Deficit, and Debt - - - Forecasts of Budgets, Deficits, and Debt

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