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The Auditor and the Firm : A Simple Model of Corporate Cheating and Intermediation


  • Brishti Guha



We apply a game-theoretic model to the analysis of the recent spate of corporate scandals in which firms have cheated their investors, often with the aid of external auditors. We characterize the different types of equilibria that obtain for different parameter ranges in an auditors absence (the parameters we consider being early signal accuracy a measure of transparency and withdrawal costs a measure of the liquidity of investments). We also analyze whether and under what conditions the presence of an informed auditor could lead to an improvement in the sense of honest behavior replacing cheating as the firms equilibrium strategy. In doing so we take into account the auditors incentives to collude with his clients or extort from them. We use our results to derive some policy predictions including those relating to the Sarbanes-Oxley reforms, and contrast the case of a firm-hired intermediary (like an auditor) with the situation in which an intermediary is hired by investor consortia. Interestingly, we find that mandatory disclosure of audit fees could guarantee honest behavior, in equilibrium, for much of the parameter space in which cheating would have prevailed in an auditors absence as investors are able to check that audit fees lie in a range which removes incentives to cheat for the auditor and his clients. Such disclosure would need to be backed by heavy penalties for false disclosure. We also find that while firm-hired intermediaries have a non-monotone reaction to improvements in public transparency, initially favoring and then opposing them, investor-hired intermediaries unambiguously dislike improvements in public transparency. We argue that frequent rotation of an auditors clients may have costs, not just benefits.

Suggested Citation

  • Brishti Guha, 2005. "The Auditor and the Firm : A Simple Model of Corporate Cheating and Intermediation," Microeconomics Working Papers 22429, East Asian Bureau of Economic Research.
  • Handle: RePEc:eab:microe:22429

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    References listed on IDEAS

    1. Garey Ramey & Joel Watson, 2002. "Contractual Intermediaries," Journal of Law, Economics, and Organization, Oxford University Press, vol. 18(2), pages 362-384, October.
    2. Douglas W. Diamond & Raghuram G. Rajan, 2001. "Liquidity Risk, Liquidity Creation, and Financial Fragility: A Theory of Banking," Journal of Political Economy, University of Chicago Press, vol. 109(2), pages 287-327, April.
    3. Craswell, Allen & Stokes, Donald J. & Laughton, Janet, 2002. "Auditor independence and fee dependence," Journal of Accounting and Economics, Elsevier, vol. 33(2), pages 253-275, June.
    4. Diamond, Douglas W, 1991. "Monitoring and Reputation: The Choice between Bank Loans and Directly Placed Debt," Journal of Political Economy, University of Chicago Press, vol. 99(4), pages 689-721, August.
    5. Greif, Avner, 1993. "Contract Enforceability and Economic Institutions in Early Trade: the Maghribi Traders' Coalition," American Economic Review, American Economic Association, vol. 83(3), pages 525-548, June.
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    More about this item


    Corporate governance; auditing; disclosure; repeated games;

    JEL classification:

    • C72 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Noncooperative Games
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • L20 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - General


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