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Steuern in Agency-Modellen: Mehrperioden- und Multi-Task-Strukturen


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  • Ewert, Ralf
  • Niemann, Reiner
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    In diesem Beitrag werden sowohl persönliche Steuern des Agenten als auch die vom Prinzipal zu tragende Unternehmenssteuer in ein Agency-Modell des LEN-Typs integriert. Wir analysieren die Auswirkungen dieser Steuern auf die optimale Anreizgestaltung. Für das Grundmodell mit nur einer operativen Aktion des Agenten ergeben sich nur wenig qualitative Änderungen gegenüber einem Ansatz ohne Steuern. Wenn der Agent neben operativen Tätigkeiten auch Maßnahmen zur Steuervermeidung setzen kann, treten unerwartete Resultate auf. Wir zeigen verschiedene Steuerparadoxa auf, so z.B. den Effekt, dass sich die Zielerreichung des Prinzipals mit höheren Unternehmenssteuern auch verbessern kann oder dass steuerplanungsbedingte Maßnahmen nicht streng monoton steigend in der Höhe der Unternehmenssteuersätze sind. Die Resultate lassen sich aus den Wechselwirkungen von Motivation, Risikoteilung und dem Einfluß der Unternehmensbesteuerung auf die Varianz von Nachsteuer-Cash-Flows erklären. Paradoxe Steuerwirkungen können auch in einem Ansatz, in dem der Agent mit differenzierten Bonusparametern gesteuert werden kann, gezeigt werden. -- We analyze the effects of taxation on optimal incentive schemes by integrating individual income taxation at the agent's level and corporate taxation at the principal's level into a principal-agent model of the LEN type. The basic model with only operative managerial effort is very similar to the model in a world without taxes. If the agent can also provide tax planning effort, however, unexpected results emerge. We show various paradoxical tax effects. For instance, the principal's net profit can increase with increasing corporate tax rate. As another example of paradoxical tax effects, tax planning effort can be non-monotonous with respect to the corporate tax rate. These results can be explained by the interplay of motivation, risk sharing, and the impact of the tax rate on the variance of after-tax cash flows. Similar paradoxical tax effects can be derived in models with one or two bonus coefficients.

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    Paper provided by arqus - Arbeitskreis Quantitative Steuerlehre in its series arqus Discussion Papers in Quantitative Tax Research with number 135.

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    Date of creation: 2012
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    Handle: RePEc:zbw:arqudp:135

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    Keywords: Prinzipal-Agent-Theorie; Steuerplanung; Unternehmensbesteuerung; Lohnsteuer; Multi-Task-Modelle;

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    1. Steven Shavell, 1979. "Risk Sharing and Incentives in the Principal and Agent Relationship," Bell Journal of Economics, The RAND Corporation, vol. 10(1), pages 55-73, Spring.
    2. Rainer Niemann & Dirk Simons, 2003. "Costs, Benefits, And Tax-Induced Distortions Of Stock Option Plans," Schmalenbach Business Review (sbr), LMU Munich School of Management, vol. 55(4), pages 321–341, October.
    3. Vesa Kanniainen, 1999. "Failures in Corporate Governance: Can the Corporation Tax Improve Efficiency?," FinanzArchiv: Public Finance Analysis, Mohr Siebeck, Tübingen, vol. 56(3/4), pages 310-, July.
    4. Rainer Niemann, 2008. "The Effects of Differential Taxation on Managerial Effort and Risk Taking," FinanzArchiv: Public Finance Analysis, Mohr Siebeck, Tübingen, vol. 64(3), pages 273-310, September.
    5. Rees, Ray, 1985. "The Theory of Principal and Agent: Part 2," Bulletin of Economic Research, Wiley Blackwell, vol. 37(2), pages 75-95, May.
    6. HOLMSTROM, Bengt, . "Moral hazard and observability," CORE Discussion Papers RP -379, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    7. Brunello, Giorgio & Comi, Simona & Sonedda, Daniela, 2006. "Income Taxes and the Composition of Pay," IZA Discussion Papers 2203, Institute for the Study of Labor (IZA).
    8. Bengt Holmstrom & Paul R. Milgrom, 1985. "Aggregation and Linearity in the Provision of Intertemporal Incentives," Cowles Foundation Discussion Papers 742, Cowles Foundation for Research in Economics, Yale University.
    9. Kanniainen, Vesa, 2000. "Empire building by corporate managers:: the corporation as a savings instrument," Journal of Economic Dynamics and Control, Elsevier, vol. 24(1), pages 127-142, January.
    10. Jens Robert Schöndube, 2008. "Early Versus Late Effort in Dynamic Agencies with Unverifiable Information," BuR - Business Research, German Academic Association for Business Research, vol. 1(2), pages 165-186, December.
    11. Rees, Ray, 1985. "The Theory of Principal and Agent: Part 1," Bulletin of Economic Research, Wiley Blackwell, vol. 37(1), pages 3-26, January.
    12. Rainer Niemann, 2011. "Asymmetric Taxation and Performance-Based Incentive Contracts," CESifo Working Paper Series 3363, CESifo Group Munich.
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