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Bank Credit and Money Creation on Payment Networks: A Structural Analysis of Externalities and Key Players

Author

Listed:
  • Li, Ye

    (Ohio State University)

  • Li, Yi

    (Board of Governors of the Federal Reserve System)

  • Sun, Huijun

    (Columbia Business School)

Abstract

This paper documents a strong connection between payment system and credit supply. The dual role of deposits as financing instruments for banks and means of payment for bank customers implies spillover effects of bank lending. After a bank finances loans with new deposits, the deposit holders' payments cause reserves and deposits to flow from the lending bank to the payees' banks. The change in liquidity conditions for both banks and their customers gives rise to two opposing forces that generate respectively strategic complementarity and strategic substitution in banks' lending decisions. We model bank lending through a linear-quadratic game on a random graph of payment flows and structurally estimate the spillover effects using Fedwire data to quantify the probability distribution of payment-flow network. Payment network externalities reduce the average level of aggregate credit supply by 9% while amplify the volatility by 20%. We identify a small subset of banks that have a disproportionately large influence on credit supply due to their special positions in the payment-flow network.

Suggested Citation

  • Li, Ye & Li, Yi & Sun, Huijun, 2021. "Bank Credit and Money Creation on Payment Networks: A Structural Analysis of Externalities and Key Players," Working Paper Series 2021-22, Ohio State University, Charles A. Dice Center for Research in Financial Economics.
    • Handle: RePEc:ecl:ohidic:2021-22
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    JEL classification:

    • E42 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Monetary Sytsems; Standards; Regimes; Government and the Monetary System
    • E43 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Interest Rates: Determination, Term Structure, and Effects
    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • E51 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Money Supply; Credit; Money Multipliers
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • G28 - Financial Economics - - Financial Institutions and Services - - - Government Policy and Regulation

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