Swiss Journal of Economics and Statistics

, Volume 150, Issue 3, pp 161–190 | Cite as

Stock Market’s Reactions to Revelation of Tax Evasion: An Empirical Assessment

  • Andreas Brunhart
Open Access


Additionally to the financial crisis causing a world recession, Liechtenstein’s financial sector has been challenged by the so-called “Zumwinkel-Affair”, when a whistle-blower sold data of hundreds of tax evaders to international tax authorities. This paper investigates the impact of this affair on the daily stock prices of banks from Liechtenstein. An unconventional augmented GARCH-model (labelled as “augmented amalGARCH”), which outperforms conventional models, is introduced and dynamically analyses various influences on risk and returns. Also, an event study framework is applied. The main finding beyond further conclusions is that the Zumwinkel-Affair had an (accumulating) effect on risk, but surprisingly no impact on average stock return could be detected.


Tax Evasion Liechtenstein Zumwinkel Stock Price Volatility Augmented GARCH Event Study 


C01 C22 G01 G14 G21 


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Copyright information

© Swiss Society of Economics and Statistics 2014

Authors and Affiliations

  1. 1.Liechtenstein InstituteGermany

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