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Taxation when Markets are not Competitive: Evidence from a Loan Tax

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  • Brugués, Felipe
  • De Simone, Rebeca

Abstract

We study the interaction of market structure and tax-and-subsidy strategies utilizing pass-through estimates from the unexpected introduction of a loan tax in Ecuador, a quantitative model, and a comprehensive commercial-loan dataset. Our model generalizes bank competition theories, including Bertrand-Nash competition, credit rationing, and joint-maximization. While we find the loan tax is distortionary, neglecting the possibility of non-competitive lending inflates estimated tax deadweight loss by 80% because non-competitive banks internalize some of the burden. Conversely, subsidies are less effective in non-competitive settings. If competition were stronger, tax revenue would be 10% lower. The findings suggest that policymakers should consider market structure in tax-and-subsidy strategies.

Suggested Citation

  • Brugués, Felipe & De Simone, Rebeca, 2024. "Taxation when Markets are not Competitive: Evidence from a Loan Tax," IDB Publications (Working Papers) 13409, Inter-American Development Bank.
    • Handle: RePEc:idb:brikps:13409
    DOI: http://dx.doi.org/10.18235/0005548
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    References listed on IDEAS

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    More about this item

    Keywords

    Banks; Government regulation of banks; Taxation and subsidies; market structure; firm strategy; market performance;
    All these keywords.

    JEL classification:

    • 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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