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Central bank digital currency: When price and bank stability (Don’t) collide

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  • Bird, Daniel
  • Weiss, David

Abstract

In a recent influential paper, Schilling et al. (2024) caution that the introduction of a central bank digital currency gives rise to a central bank trilemma in a nominal version of the quintessential (Diamond and Dybvig, 1983) model of bank-runs. Specifically, the central bank can achieve at most two out of three policy objectives: attaining the socially efficient allocation, financial stability, and price stability. We show that the central bank can employ a natural policy to evade their concerns. In particular, the central bank can create debt, backed by assets, to provide to patient runners. Giving patient households the option to save, rather than spend, with a safe asset solves the inflationary pressures of a run. The key mechanism is thus liability composition: accommodating safe-asset demand without monetizing goods-market demand.

Suggested Citation

  • Bird, Daniel & Weiss, David, 2026. "Central bank digital currency: When price and bank stability (Don’t) collide," Journal of Economic Dynamics and Control, Elsevier, vol. 184(C).
    • Handle: RePEc:eee:dyncon:v:184:y:2026:i:c:s0165188926000096
    DOI: 10.1016/j.jedc.2026.105263
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    Keywords

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    JEL classification:

    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • E50 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - General
    • G01 - Financial Economics - - General - - - Financial Crises

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