The widespread use of composite indices has often been motivated by their practicality to quantify qualitative data in an easy and intuitive way. At the same time, this approach has been challenged due to the subjective and partly ad hoc nature of computation, aggregation and weighting techniques as well as the handling of missing data. Partially ordered set (POSET) theory offers an alternative approach for summarizing qualitative data in terms of quantitative indices, which relies on a computation scheme that fully exploits the available information and does not require the subjective assignment of weights. The present paper makes the case for an increased use of POSET theory in the social sciences and provides a comparison of POSET indices and composite indices (from previous studies) measuring the 'stringency' of fiscal frameworks using data from the OECD Budget Practices and Procedures survey (2007/08). (authors' abstract) / Series: Department of Economics Working Paper Series

The Organization for Economic Cooperation and Development (OECD) under Base Erosion and Profit Shifting (BEPS) Action 2 indicated that tax arbitrage via hybrid mismatch arrangements "result in a substantial erosion of the taxable bases of the countries concerned" and "have an overall negative impact on competition, efficiency, transparency and fairness." The relevant action allowing for neutralising the effects of hybrid mismatch arrangements is therefore needed and justified. To achieve that purpose, the OECD developed different anti-hybrid rules under BEPS Action 2. In that regard, however, one may ask whether addressing tax arbitrage via hybrid mismatches as proposed by the OECD is of interest and relevance for developing countries. This paper aims to map that unexplored research area by means of a comparative analysis in four developing countries - Uruguay, Colombia, Brazil, and South Africa. / Series: WU International Taxation Research Paper Series

Contributing to the contentious debate on the relationship between sovereign debt and economic growth, I examine the role of theory-driven (non-)sustainable debt-ratios in combination with debt-ratio thresholds on economic growth. Based on both dynamic and non-dynamic panel data analyses in the euro area (EA) 12 countries over the period 1970-2013, I find that non-sustainable debt-ratios above and below the 60% threshold, have a detrimental effect on short-run economic growth, while sustainable debt-ratios below the 90% threshold exert a positive influence on short-run economic growth. In the long-run, both non-sustainable and sustainable debt-ratios above the 90% threshold, as well as non-sustainable debt-ratios below the 60% compromise economic growth. Robustness analysis supports these findings, and provides additional evidence of a positive effect of sustainable debt-ratios below the 60% threshold, as predicated by the Maastricht Treaty criterion, on (short- and long-run) economic growth. Overall, these results suggest that debt sustainability in addition to debt non-linearities should be considered simultaneously in the debt-growth nexus. In addition, the results indicate the importance of a timely reaction of fiscal policy in countries with non-sustainable debts, as implied by fiscal rules, in an attempt to ensure fiscal sustainability and, ultimately, promote long-run economic growth. (author's abstract) / Series: Department of Economics Working Paper Series

The overall aim of this article is to analyse the taxpayers' rights in relation to the emerging standard of transparency with specific reference to Brazil, Colombia, South Africa and Uruguay. Exchange of information between tax authorities is increasing rapidly all around the world. This global development is largely the result of the introduction of the standard of transparency by the Organization for Economic Cooperation and Development ("OECD") with the political mandate of the G20 and more recently, in 2013, the introduction of the global standard of automatic exchange of information. Governments have agreed that exchange of information is necessary to prevent tax evasion and to tackle tax avoidance including aggressive tax planning. All surveyed countries have accepted the standard of transparency including the standard of automatic exchange of information. Furthermore, it is evident that the development of such standards appears to have taken place in a coordinated manner, led mainly by international organizations comprising governmental officials. This article has first provided a comparative overview of the rules that Brazil, Colombia, South Africa and Uruguay have introduced to protect the taxpayers' rights in the exchange of information process being the right to access to public information, the right to confidentiality, the right to privacy, and the procedural rights (right to be informed, the right to be notified and right to object and appeal). Thereafter, this article has assessed whether the rules introduced by the surveyed countries to protect these rights are consistent with the fundamental taxpayers' rights that belong to the rule of law of these countries and with the principles of good governance and fiscal transparency. The main conclusion is that the countries have introduced to some extent similar rules to protect the right to confidentiality, right to privacy and the procedural rights in the exchange of information. However, some differences may be found in the detail level of protection of confidentiality in South Africa and in respect of the procedural rights in Uruguay. One of the drawbacks of these rules is that the rules introduced by the surveyed countries do not ensure that the protection of the right to confidentiality and the right to privacy is effectively guaranteed. The results of the analysis show that these rules do not protect the taxpayer in case of breach of confidentiality or misuse of the information exchanged. This article argues that the differences among rules and the lack of protection for taxpayer information may hinder the effective protection of the taxpayer and the tax administration should guarantee the protection of the taxpayer rights as part of the rule of law. Therefore, this article provides in Section 4 three recommendations addressing the right to confidentiality, the right to privacy and the taxpayers' procedural rights. These recommendations may be extended (as best practices) to other developing countries on a similar economic and legal scale. However, further research will be needed to see whether the conclusions of this article are also applicable to (other) developing countries. / Series: WU International Taxation Research Paper Series

This doctoral thesis addresses in a sequence of five essays the question how fiscal policy and economic output are interrelated in emerging Europe and how this relationship is shaped by the respective politico-economic environment and the individual-level support for economic reforms. Following main findings can be highlighted: (1) Countries in Central, Eastern and Southeastern Europe (CESEE) respond to a fiscal expansion in the euro area with fiscal easing at home, while the GDP response is mixed across countries.(2)Automatic fiscal stabilizers are comparatively small and discretionary fiscal policy has been largely pro-cyclical in CESEE. (3) The public spending and revenue structure is more "growth-friendly" in CESEEthan in the EU-15. (4) In transition economies with more democratic institutions and a better quality of governance, individuals with high market-relevant skills show a significantly larger support of the privatization status quo than individuals with low market skills. (5) The society in Russia - triggered by a lack of social capital - chooses to demand more state regulationand tolerate corruption to reduce negative externalities imposed by private business.(author's abstract)