This paper analyzes the effects of legal uncertainty around corporate income taxation on foreign direct investment (FDI). Legal uncertainty can take many forms: double tax agreements, different types of legal systems and corruption. We test the effect of legal uncertainty on foreign direct investment with an international panel. We find that an increase in the ratio of the statutory corporate income tax rate of the destination relative to the source country exhibits a negative impact on foreign direct investment. Interacting the statutory corporate income tax rate with measures of legal uncertainty, we observe a negative effect. / Series: WU International Taxation Research Paper Series

The current international tax system diverges greatly from a theoretically "optimal" tax system. One reason for this discrepancy may be that politicians strive for other objectives rather than making tax rules that comply with the theoretical concepts of optimal taxation. In this article, I overview the approaches used in the economic and legal literature to explain the motivations of the people making international tax policy and contrast them with observations from the "real world". This article illustrates that the making of international tax policy is affected by many different factors: domestic pressure groups and the structure of the international tax system, along with selfinterested politicians and bureaucrats. Considering the complexity of the conditions under which international tax policy is made, it is not astonishing that international tax law deviates from the principles characterizing ideal taxation. (author's abstract) / Series: WU International Taxation Research Paper Series

The paper deals with the issue of contemporary flat-tax reforms in Eastern Europe and aims to account for the different approaches that various European countries adopted towards the idea of a flat-tax. Empirically, the work is based on detailed studies of Slovakia, the Czech Republic and Germany. The analysis considers three factors being decisive for the flat-tax feasibility: 1./ party system institutionalization, 2./ coalition/opposition cohesiveness, 3./ labor union institutionalization. First, the study is concerned with each of the factor's influence on the political decision-making process in the three country cases. Secondly, on country paired comparisons the findings for each of the countries are mutually contrasted. Although all identified factors seem to be at play with regard to flat-tax feasibility, I argue that it is either the strength or the weakness of labor unions' institutionalization and welfare identity that underlie the political decision-making in the East and the West and as a result determine the flat-tax (un-)feasibility. The absence of welfare identity in the East allows for higher coalition cohesion in favor and weaker opposition against the flattax adoption in contrast to the West. / Series: Discussion Papers SFB International Tax Coordination

Worldwide income taxation in the country of residence is a legal dogma of international taxation. We question this dogma from the perspective of relations between developed and developing countries from a legal and economic perspective, and make a modern and fair proposal for tax treaties. We will show under which conditions a developing and a developed country will voluntarily sign a tax treaty where information is exchanged truthfully and whether they should share revenues. Moreover, we will demonstrate how the conclusion of a tax treaty can assist in the implementation of a tax audit system. / Series: WU International Taxation Research Paper Series