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The Determination of Bank Interest Rate Margins – Is There a Role for Macroprudential Policy?

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  • E Philip Davis
  • Dilruba Karim
  • Dennison Noel

Abstract

The advent of macroprudential policy alongside monetary policy raises the issue whether macroprudential policy has an additional effect on bank interest rate margins to that of monetary policy, and if so, whether it accentuates or offsets the interest rate effect. In light of this, we estimate combined effects of macroprudential policies and monetary policies on bank interest margins for up to 3,723 banks from 35 advanced countries over 1990-2018. In the short run, tightening of both types of policy tends to narrow the margin, while in the long run, monetary policy typically widens the margin while effects of macroprudential policies are mostly zero or positive, suggestive of countervailing action by banks. There are also significant interactions between macroprudential and monetary policy for several macroprudential policies; a tighter monetary stance is widely found to offset the negative effect of macroprudential policies on margins while a loose monetary policy leaves the negative effects intact, with potential consequences for financial stability. These results are of considerable relevance to policymakers, regulators and bank managers, not least when monetary policies are tight to reduce inflationary pressures.

Suggested Citation

  • E Philip Davis & Dilruba Karim & Dennison Noel, 2024. "The Determination of Bank Interest Rate Margins – Is There a Role for Macroprudential Policy?," National Institute of Economic and Social Research (NIESR) Discussion Papers 560, National Institute of Economic and Social Research.
  • Handle: RePEc:nsr:niesrd:560
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    References listed on IDEAS

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    More about this item

    Keywords

    Macroprudential policy; monetary policy; short-term interest rate; yield curve; bank interest margin;
    All these keywords.

    JEL classification:

    • E44 - Macroeconomics and Monetary Economics - - Money and Interest Rates - - - Financial Markets and the Macroeconomy
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy
    • E58 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Central Banks and Their Policies
    • 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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