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A Macroeconomic Model of Central Bank Digital Currency

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  • Pascal Paul
  • Mauricio Ulate
  • Jing Cynthia Wu

Abstract

We develop a quantitative New Keynesian DSGE model with monopolistic banks to study the macroeconomic effects of introducing a central bank digital currency (CBDC). Households benefit from an expansion of liquidity services and higher deposit rates as bank deposit market power is curtailed, while bank profitability and lending decline. We assess this trade-off for a wide range of economies that differ in their level of interest rates. We find substantial welfare gains from introducing a CBDC with an optimal rate that can be approximated by a simple rule of thumb: the maximum between 0% and the policy rate minus 1%.

Suggested Citation

  • Pascal Paul & Mauricio Ulate & Jing Cynthia Wu, 2025. "A Macroeconomic Model of Central Bank Digital Currency," NBER Working Papers 33968, National Bureau of Economic Research, Inc.
    • Handle: RePEc:nbr:nberwo:33968
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    References listed on IDEAS

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    1. Schilling, Linda & Fernández-Villaverde, Jesús & Uhlig, Harald, 2024. "Central bank digital currency: When price and bank stability collide," Journal of Monetary Economics, Elsevier, vol. 145(C).
    2. David Andolfatto, 2021. "Assessing the Impact of Central Bank Digital Currency on Private Banks," The Economic Journal, Royal Economic Society, vol. 131(634), pages 525-540.
    3. Keister, Todd & Monnet, Cyril, 2022. "Central bank digital currency: Stability and information," Journal of Economic Dynamics and Control, Elsevier, vol. 142(C).
    4. Michael Schwert, 2020. "Does Borrowing from Banks Cost More than Borrowing from the Market?," Journal of Finance, American Finance Association, vol. 75(2), pages 905-947, April.
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    Cited by:

    1. Abad, Jorge & Nuño, Galo & Thomas, Carlos, 2025. "CBDC and the operational framework of monetary policy," Journal of Monetary Economics, Elsevier, vol. 151(C).

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    More about this item

    JEL classification:

    • E3 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles
    • E4 - Macroeconomics and Monetary Economics - - Money and Interest Rates
    • E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G51 - Financial Economics - - Household Finance - - - Household Savings, Borrowing, Debt, and Wealth

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