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Bank Geographic Diversification and Funding Stability

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  • Doerr, Sebastian

Abstract

The recent banking turmoil has renewed focus on banks' branch networks and deposit taking activity. This paper provides novel evidence that the geographic diversification of banks' deposit base enhances their funding stability. I establish that banks with greater diversification exhibit higher dispersion in deposit growth rates across their branches; and lower volatility in deposit growth rates over time. Subsequently, banks benefit from lower deposit rates, partly by shifting from time deposits to cheaper demand deposits. These patterns are consistent with diversification improving funding stability. I then show that deposit diversification spurs banks' liquidity creation and small business lending, with positive effects for real economic activity. The funding stability channel of geographic diversification is distinct from previous findings on banks' asset-side diversification. It also highlights benefits of branch networks for bank lending that go beyond local information acquisition.

Suggested Citation

  • Doerr, Sebastian, 2024. "Bank Geographic Diversification and Funding Stability," CEPR Discussion Papers 19667, Centre for Economic Policy Research.
    • Handle: RePEc:cpr:ceprdp:19667
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    File URL: https://cepr.org/publications/DP19667
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    Cited by:

    1. Islam, Emdad & Singh, Mandeep, 2025. "Geographic diversification, climate risk, and bank lending: Evidence from farm loans," Journal of Financial Intermediation, Elsevier, vol. 63(C).
    2. Sebastian Doerr & Mathias Drehmann, 2026. "The liquidity coverage ratio a decade on: a stocktake of the literature," BIS Papers, Bank for International Settlements, number 164.
    3. Liang, Shuo & Moreira, Fernando & Lee, Joosung, 2025. "Bank geographic diversification and market competition," The Quarterly Review of Economics and Finance, Elsevier, vol. 102(C).
    4. Giulio Cornelli & Leonardo Gambacorta & Boris Hofmann & Michael Brei, 2026. "The digitalisation of banking and social media: implications for deposit pricing," BIS Working Papers 1357, Bank for International Settlements.

    More about this item

    JEL classification:

    • G20 - Financial Economics - - Financial Institutions and Services - - - General
    • 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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