In its 2015 Final Report on “Measuring and Monitoring BEPS, Action 11”, the OECD introduced six indicators to quantify and evaluate base erosion and profit shifting (BEPS) activity over time. In this study, we revisit three selected indicators, provide a numerical update for recent periods...

We study the effect of digital tax measures on firm value. By employing an event study methodology, we analyze investor reaction to the European Commission's proposals on the taxation of digital corporations. Examining the stock returns of potentially affected corporations surrounding the draft...

Die Forscher des ZEW Mannheim rund um Professor Christoph Spengel kommen zu folgendem Ergebnis: Der Steuerwettbewerb hat sich abgeschwächt. Bestimmte Instrumente gegen die Gewinnverlagerung wirken. Das führt aber bisher nicht zu einer Angleichung der Steuersätze auf niedrigerem Niveau.

The European Commission envisages putting forward a proposal for a tax reform that would allow improving the efficiency and simplicity of the corporate income tax systems. This report assesses the impact of a Common Corporate Tax Base (CCTB) on the size of the corporate tax bases of EU...

Ergänzend zu dem im ifo Schnelldienst 11/2004 diskutierten Thema "Sollte die Unternehmensbesteuerung innerhalb der EU harmonisiert werden?" plädiert Prof. Dr. Christoph Spengel, Universität Gießen, für eine Angleichung der effektiven Unternehmenssteuerbelastungen innerhalb der EU. Dazu...

In this paper we present a computer-based model (so-called European Tax Analyzer) for the international computation and comparison of company tax burdens. The methodology follows the forward-looking concepts for the measurement of effective average tax rates (EATR) on the basis of a model-firm....

11 European countries now operate IP Box regimes that provide substantially reduced rates of corporate tax for income derived from important forms of intellectual property. We incorporate these policies into forward-looking measures of the cost of capital, effective marginal tax rates and...