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Steuern und Risiko als substitutionale oder komplementäre Determinanten unternehmerischer Investitionspolitik?


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  • Niemann, Rainer
  • Sureth, Caren
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    This paper analyzes the impact of taxation on risk-taking under irreversibility. We integrate a simple tax system into a real option model. Under irreversibility and risk neutrality, raising the tax rate can either increase or reduce risk-taking. We numerically derive tax-volatility indifference curves, i.e. combinations of volatility and tax rate, which induce identical investment thresholds. Using this novel illustration technique it is possible to identify conditions for an unambiguous influence of taxes on risk-taking. Our simulations indicate that raising the tax rate increases risk-taking under low volatility. Implementing a ?nal withholding tax on capital income tends to reduce risky investment. Our findings extend the well-known tax effects on investment from certainty with respect to uncertainty, irreversibility, and risk-taking. -- Der vorliegende Beitrag untersucht den Einfluss der Besteuerung auf die Bereitschaft von Investoren, riskante und irreversible Investitionen durchzuführen. Als Erweiterung der vorliegenden Literatur wird ein einfaches Ertragsteuersystem in ein realoptionsbasiertes Modell irreversibler Investitionen bei Risikoneutralität integriert. Es wird gezeigt, dass Erhöhungen des Ertragsteuersatzes die Bereitschaft zur Risikoübernahme erhöhen, aber auch verringern können. Wir leiten SteuersatzVolatilitäts-Indifferenzkurven numerisch her, d.h. Kombinationen von Projektvolatilität und Nominalsteuersatz, die zu identischen Investitionsschwellen führen. Diese neuartige Darstellungsform verdeutlicht, unter welchen Bedingungen ein einheitlicher Steuereinfluss auf die Bereitschaft zur Risikoübernahme vorliegt. Unsere Simulationen zeigen, dass eine Erhöhung des Steuersatzes bei geringer Volatilität tendenziell die Bereitschaft zur Risikoübernahme erhöht. Die Einführung einer Abgeltungssteuer reduziert die Bereitschaft, riskante Investitionen zu realisieren. Die Modellergebnisse erweitern die unter Sicherheit bekannten Steuerwirkungen auf Investitionen im Hinblick auf Unsicherheit, Irreversibilität und die Bereitschaft zur Risikoübernahme.

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    Paper provided by arqus - Arbeitskreis Quantitative Steuerlehre in its series arqus Discussion Papers in Quantitative Tax Research with number 51.

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    Date of creation: 2008
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    Handle: RePEc:zbw:arqudp:51

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    1. Paolo M. Panteghini, 2001. "Corporate Tax Asymmetries under Investment Irreversibility," FinanzArchiv: Public Finance Analysis, Mohr Siebeck, Tübingen, vol. 58(3), pages 207-, July.
    2. Paolo Panteghini, 2001. "On Corporate Tax Asymmetries and Neutrality," German Economic Review, Verein für Socialpolitik, vol. 2(3), pages 269-286, 08.
    3. Alan J. Auerbach & James R. Hines, Jr., 1987. "Anticipated Tax Changes and the Timing of Investment," NBER Chapters, in: The Effects of Taxation on Capital Accumulation, pages 163-200 National Bureau of Economic Research, Inc.
    4. Paolo M. Panteghini, 2005. "Asymmetric Taxation under Incremental and Sequential Investment," Journal of Public Economic Theory, Association for Public Economic Theory, vol. 7(5), pages 761-779, December.
    5. Agliardi, Elettra, 2001. "Taxation and Investment Decisions: A Real Options Approach," Australian Economic Papers, Wiley Blackwell, vol. 40(1), pages 44-55, March.
    6. Caren Sureth, 2002. "Partially Irreversible Investment Decisions and Taxation under Uncertainty: A Real Option Approach," German Economic Review, Verein für Socialpolitik, vol. 3(2), pages 185-221, 05.
    7. Moretto, Michele, 2000. "Irreversible investment with uncertainty and strategic behavior," Economic Modelling, Elsevier, vol. 17(4), pages 589-617, December.
    8. Niemann, Rainer & Sureth, Caren, 2004. "Tax neutrality under irreversibility and risk aversion," Economics Letters, Elsevier, vol. 84(1), pages 43-47, July.
    9. McDonald, Robert & Siegel, Daniel, 1986. "The Value of Waiting to Invest," The Quarterly Journal of Economics, MIT Press, vol. 101(4), pages 707-27, November.
    10. Brennan, Michael J & Schwartz, Eduardo S, 1985. "Evaluating Natural Resource Investments," The Journal of Business, University of Chicago Press, vol. 58(2), pages 135-57, April.
    11. Gries, Thomas & Prior, Ulrich & Sureth, Caren, 2007. "Taxation of risky investment and paradoxical investor behavior," arqus Discussion Papers in Quantitative Tax Research 26, arqus - Arbeitskreis Quantitative Steuerlehre.
    12. Jyh-Bang Jou, 2000. "Irreversible Investment Decisions Under Uncertainty with Tax Holidays," Public Finance Review, , vol. 28(1), pages 66-81, January.
    13. Pennings, Enrico, 2000. "Taxes and stimuli of investment under uncertainty," European Economic Review, Elsevier, vol. 44(2), pages 383-391, February.
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