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Interest Rates, Market Power, and Financial Stability

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  • Repullo, Rafael
  • Martinez-Miera, David

Abstract

This paper shows the relevance of market power to assess the effects of safe interest rates on financial intermediaries' risk-taking decisions. We consider an economy where (i) intermediaries have market power in granting loans, (ii) intermediaries monitor borrowers which lowers their probability of default, and (iii) monitoring is costly and unobservable which creates a moral hazard problem with uninsured depositors. We show that lower safe rates lead to lower intermediation margins and higher risk-taking when intermediaries have low market power, but the result reverses for high market power. We examine the robustness of this result to introducing non-monitored market finance, heterogeneity in monitoring costs, and entry and exit of intermediaries. We also consider the effect of replacing uninsured by insured deposits, market power in raising deposits, and funding with both deposits and capital.

Suggested Citation

  • Repullo, Rafael & Martinez-Miera, David, 2020. "Interest Rates, Market Power, and Financial Stability," CEPR Discussion Papers 15063, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:15063
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    References listed on IDEAS

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    1. Repullo, Rafael, 2004. "Capital requirements, market power, and risk-taking in banking," Journal of Financial Intermediation, Elsevier, vol. 13(2), pages 156-182, April.
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    Cited by:

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    3. Koenig, Philipp J. & Schliephake, Eva, 2022. "Bank risk-taking and impaired monetary policy transmission," Working Paper Series 2638, European Central Bank.
    4. Antoniades, Adonis, 2021. "Monetary easing and the lending concentration channel of monetary policy transmission," Journal of Banking & Finance, Elsevier, vol. 133(C).
    5. Koenig, Philipp J. & Schliephake, Eva, 2021. "Bank risk-taking and impaired monetarypolicy transmission," Discussion Papers 42/2021, Deutsche Bundesbank.

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    More about this item

    Keywords

    Imperfect competition; Intermediation margins; Bank monitoring; Bank risk-taking; Monetary policy;
    All these keywords.

    JEL classification:

    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • E52 - Macroeconomics and Monetary Economics - - Monetary Policy, Central Banking, and the Supply of Money and Credit - - - Monetary Policy

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