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How does credit supply respond to monetary policy and bank minimum capital requirements?

Author

Listed:
  • Aiyar, Shekhar

    (International Monetary Fund)

  • Calomiris, Charles

    (Columbia Business School)

  • Wieladek, Tomasz

    (Bank of England)

Abstract

We use data on UK banks’ minimum capital requirements to study the interaction of monetary policy and capital requirement regulation. UK banks were subject to both time-varying capital requirements and changes in interest rate policy. Tightening of either capital requirements or monetary policy reduces the supply of lending. Lending by large banks reacts substantially to capital requirement changes, but not to monetary policy changes. Lending by small banks reacts to both. There is little evidence of interaction between these two policy instruments. The differences in the responses of small and large banks, and the lack of interaction between capital requirement changes and monetary policy, have important policy implications. Our results confirm the theoretical consensus view that monetary policy should focus on price stability objectives and that capital requirement changes are a more effective tool to achieve financial stability objectives related to loan supply. We also identify important distributional consequences within the financial system of these two policy instruments. Finally, our findings do not corroborate theoretical models that raise concerns about complex interactions between monetary policy and macroprudential variation in capital requirements.

Suggested Citation

  • Aiyar, Shekhar & Calomiris, Charles & Wieladek, Tomasz, 2014. "How does credit supply respond to monetary policy and bank minimum capital requirements?," Bank of England working papers 508, Bank of England.
  • Handle: RePEc:boe:boeewp:0508
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    More about this item

    Keywords

    loan supply; capital requirements; monetary policy; macroprudential regulation;
    All these keywords.

    JEL classification:

    • 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
    • G18 - Financial Economics - - General Financial Markets - - - Government Policy and Regulation
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages

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