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CBDC as Imperfect Substitute for Bank Deposits: A Macroeconomic Perspective

Author

Listed:
  • Philippe Bacchetta

    (University of Lausanne; Centre for Economic Policy Research (CEPR); Swiss Finance Institute)

  • Elena Perazzi

    (Ecole Polytechnique Fédérale de Lausanne)

Abstract

The impact of Central Bank Digital Currency (CBDC) is analyzed in a small open economy model with monopolistic competition in banking and where CBDC is an imperfect substitute with bank deposits. The design of CBDC is characterized by its interest rate, its substitutability with bank deposits, and its relative liquidity. We examine how interest-bearing CBDC would affect the banking sector, public finance, GDP and welfare. Welfare may improve through three channels: seigniorage; a lower opportunity cost of money; and a redistribution away from bank owners. In our numerical analysis we find a maximum welfare improvement of 60 bps in consumption terms.

Suggested Citation

  • Philippe Bacchetta & Elena Perazzi, 2021. "CBDC as Imperfect Substitute for Bank Deposits: A Macroeconomic Perspective," Swiss Finance Institute Research Paper Series 21-81, Swiss Finance Institute.
    • Handle: RePEc:chf:rpseri:rp2181
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    Cited by:

    1. Ozili, Peterson K, 2023. "Central bank digital currency and bank earnings management using loan loss provisions," MPRA Paper 116412, University Library of Munich, Germany.
    2. Andrej Sokol & Michael Kumhof & Marco Pinchetti & Phurichai Rungcharoenkitkul, 2023. "CBDC policies in open economies," BIS Working Papers 1086, Bank for International Settlements.
    3. Maria Elena Filippin, 2025. "Who's in? Household-targeted Government Policies and the Role of Financial Literacy in Market Participation," Papers 2506.12575, arXiv.org.
    4. Magin, Jana Anjali & Neyer, Ulrike & Stempel, Daniel, 2023. "The macroeconomic effects of different CBDC regimes in an economy with a heterogeneous household sector," DICE Discussion Papers 396, Heinrich Heine University Düsseldorf, Düsseldorf Institute for Competition Economics (DICE).
    5. Muñoz, Manuel A. & Soons, Oscar, 2023. "Public money as a store of value, heterogeneous beliefs, and banks: implications of CBDC," Working Paper Series 2801, European Central Bank.
    6. Lorenzo Burlon & Manuel A. Muñoz & Frank Smets, 2024. "The Optimal Quantity of CBDC in a Bank-Based Economy," American Economic Journal: Macroeconomics, American Economic Association, vol. 16(4), pages 172-217, October.
    7. Julian A. Parra-Polania & Constanza Martínez-Ventura, 2025. "Designing the Future of Money: The Case for Multiple CBDCs," Borradores de Economia 1311, Banco de la Republica de Colombia.
    8. Magin, Jana & Neyer, Ulrike & Stempel, Daniel, 2023. "The Macroeconomic Effects of Different CBDC Regimes in an Economy with a Heterogeneous Household Sector," VfS Annual Conference 2023 (Regensburg): Growth and the "sociale Frage" 277656, Verein für Socialpolitik / German Economic Association.
    9. Magin, Jana Anjali & Neyer, Ulrike & Stempel, Daniel, 2025. "Cash or Cache? Distributional and business cycle implications of CBDC holding limits," Journal of International Financial Markets, Institutions and Money, Elsevier, vol. 101(C).

    More about this item

    JEL classification:

    • E5 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit

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