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When Does the Introduction of a New Currency Improve Welfare?

Author

Listed:
  • Max Fuchs

    (University of Kassel)

  • Jochen Michaelis

    (University of Kassel)

Abstract

In recent years, cryptocurrencies such as Bitcoin have emerged, in upcoming years, corporate currencies such as Libra (Diem) and central bank digital currencies will emerge even in low-inflation developed economies. Using the dual currency search model of Kiyotaki and Wright (1993), we show how the introduction of a supplement to traditional money affects average utility. The room for a welfare improvement depends on differences in returns and costs, but, in particular, on the fraction of cash traders who will be replaced by digital money traders.

Suggested Citation

  • Max Fuchs & Jochen Michaelis, 2021. "When Does the Introduction of a New Currency Improve Welfare?," MAGKS Papers on Economics 202106, Philipps-Universität Marburg, Faculty of Business Administration and Economics, Department of Economics (Volkswirtschaftliche Abteilung).
    • Handle: RePEc:mar:magkse:202106
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    File URL: https://www.uni-marburg.de/en/fb02/research-groups/economics/macroeconomics/research/magks-joint-discussion-papers-in-economics/papers/2021-papers/06-2021_fuchs.pdf
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    References listed on IDEAS

    as
    1. Ben R. Craig & Christopher J. Waller, 2000. "Dual-currency economies as multiple-payment systems," Economic Review, Federal Reserve Bank of Cleveland, issue Q I, pages 2-13.
    2. Chang, Sanders S., 2006. "Inflation and dollarization in a dual-currency search-theoretic model," Economics Letters, Elsevier, vol. 92(3), pages 353-359, September.
    3. Rao Aiyagari, S. & Wallace, Neil & Wright, Randall, 1996. "Coexistence of money and interest-bearing securities," Journal of Monetary Economics, Elsevier, vol. 37(3), pages 397-419, June.
    4. Soller Curtis, Elisabeth & Waller, Christopher J., 2000. "A search-theoretic model of legal and illegal currency," Journal of Monetary Economics, Elsevier, vol. 45(1), pages 155-184, February.
    5. Kiyotaki, Nobuhiro & Wright, Randall, 1993. "A Search-Theoretic Approach to Monetary Economics," American Economic Review, American Economic Association, vol. 83(1), pages 63-77, March.
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    Cited by:

    1. Max Fuchs, 2022. "Does a CBDC Reinforce Inefficiencies?," MAGKS Papers on Economics 202228, Philipps-Universität Marburg, Faculty of Business Administration and Economics, Department of Economics (Volkswirtschaftliche Abteilung).

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    More about this item

    Keywords

    digital money; dual currency regime; welfare comparison;
    All these keywords.

    JEL classification:

    • E41 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Demand for Money
    • E42 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Monetary Sytsems; Standards; Regimes; Government and the Monetary System
    • E51 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Money Supply; Credit; Money Multipliers

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