Michael Overesch Dissertations

About Prof. Michael Overesch

Prof. Overesch is Professor of Business Taxation at the University of Cologne since 2013. Before working at the University of Cologne, Prof. Overesch was Professor of Business Taxation at Goethe University in Frankfurt (2011 - 2013). His research interests lie in the influence of taxation on the decision making of companies. A research focus is tax planning of international companies. He examined cross-border profit shifting activities and optimal tax investment and location decisions of international companies in numerous publications.

The lectures of Prof. Dr. Overesch teach basic tax knowledge and its involvement in business decisions. Students are then qualified to work in tax and auditing, as well as in finance and accounting.

Prof. Dr. Overesch studied economics in Osnabrück and Mannheim and graduated in Business Administration at the University of Mannheim. He completed a doctorate at the University of Mannheim. After that he worked at the department of business taxation of Prof. Ulrich Schreiber at the University of Mannheim and at the Centre for European Economic Research (ZEW). He also worked as a guest researcher at the University of Michigan in Ann Arbor.


  • International company taxation
  • Empirical tax research
  • Profit shifting and economic decisions
  • Taxation and financing decisions


Tassius, Alexander (2016) Capital Market Effects of Taxes and Corporate Tax Avoidance. PhD thesis, Universität zu Köln.


This thesis consists of four essays: The first essay entitled “Tax Effects on Asset Pricing – New Evidence from Tax Reform Announcements in Germany”, co-authored with Michael Overesch, Chair of Business Taxation at the University of Cologne, not only presents price effects for German shares given rumors about lowering the German corporate tax rate but also shows price effects for bonds following a substantial cut in the German personal interest tax rate. The second essay “Capital Income Taxes and the Ex-Day Premium – New Evidence from a Cross-Country Analysis”, again co-authored with Michael Overesch, presents new evidence on the tax status of the marginal investor and whether the ex-day price drop equals the dividend payment. The third essay “Corporate Tax Planning and the Payout Ratio of Firms – Is the Dividend Penalty Linked to ETRs?”, co-authored with Pia Olligs, doctoral research assistant at the University of Cologne, sheds light on the question whether corporate tax avoiding firms do also react more sensible to their shareholders’ personal dividend tax rates. The concluding essay “Capital Market Reaction to Tax Avoidance: Evidence from LuxLeaks”, co-authored with Birgit Hüsecken, doctoral research assistant at the University of Cologne, and Michael Overesch, shows robust evidence that the revelation of corporate tax avoidance, when there is no threat of back taxes or penalties, does increase firm value.

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