Time is a crucial dimension in the application of any law. In tax law, however, where an environment characterized by rapid change on the national, European, and international levels complicates the provision of accurate legal advice, timing is particularly sensitive. This book is the first to analyse the relationship between time and three key areas of tax: treaties, EU law, and constitutional law issues, such as legal certainty and individual rights. Among the numerous timing issues arising out of applying tax rules, the book addresses the following: – time limits within which relief must be requested; – statutes of limitation for claiming a tax refund; – transitional issues relating to changes in tax treaties; – attribution of profits and expenses to a moving or closed-down business; – effect of tax-related CJEU decisions and EU directives; – compliance of exit tax regimes with free movement; – limits of retroactivity under principles protected by the EU Charter and the ECHR; and – conflict between efficiency of taxation and individual rights. Derived from a recent conference organized by the prestigious ATOZ Chair for European and International Taxation at the University of Luxembourg, the book brings together contributions from leading tax experts from various areas of tax practice, academia, and the judiciary. Among other issues, the book notably expands on how economic theory can inform a constitutional analysis of the timing of taxation. There is no other work that concentrates so usefully on the difficulties associated with applying tax rules – whether arising from treaties, jurisprudence, or policy – to changing circumstances over time. This book will quickly prove itself to be an indispensable resource for European tax lawyers, policymakers, company counsels, and academics.

Justifying Taxes offers readers some of the elements of a democratic tax law, considered within its political and philosophical context in order to determine the extent of legitimate tax obligations. The objective is to revisit some of the issues in the dogmatics of tax law from the viewpoint of a critical citizen, always ready to ask questions about the justification underlying her obligations, and especially about her paramount burden, viz., the payment of certain amounts of money. Within this purview, special attention is paid to the general principles of taxation. The argument is complemented by a detailed reconstruction of constitutional reasoning in tax matters, close attention being paid to the jurisprudence of the Spanish Tribunal Constitucional. Readership: Legal scholars, political scientists and philosophers. Especially recommended to graduate and undergraduate students of Tax Law, Constitutional Law, Jurisprudence, Philosophy of Law and Political Theory.

The Supreme Court's Federal Tax Jurisprudence occupies an original space previously not attempted by any other writer in the area of tax law publishing. Using the federal tax opinions of the United States Supreme Court as its primary guide, this book analyzes how federal tax laws have been applied in practice, with special emphasis on statutory interpretation and fact finding. The author demonstrates how the body of Supreme Court tax opinions is sufficiently large (nearly 1,000 opinions) to provide an authoritative guide to many of the most difficult questions of Internal Revenue Code application, including Chevron deference, economic substance, substance over form, step transactions, interpretative presumptions and maxims, tax avoidance, equity in the tax law, and more.

In an age when cross-border business transactions are increasingly effected without the transference of physical products, revenue concerns of states have led to a multitude of tax disputes based on the concept of ‘nexus’. This important and timely book is the most authoritative to date to discuss one of the major tax topics of our time – the question of how taxing rights on income generated from cross-border activities in the digital age should be allocated among jurisdictions. Demonstrating in prodigious depth that it is the economic nexus of the tax entity or activity with the state, and not the physical nexus, which meets the jurisdictional requirement, the author – a leading authority on this area who is a Senior Commissioner of Income Tax and a Member of the Dispute Resolution Panel of the Government of India – addresses such dimensions of the subject as the following: whether a strict territorial nexus as a normative principle is ingrained in source rule jurisprudence; detailed scrutiny of such classical doctrines as benefit theory, neutrality theory, and internation equity; comparative critique of the Organisation for Economic Co-operation and Development (OECD) and United Nation (UN) model tax treaties; whether international law and customary principles mandate a strict territorial link with the source state for the assumption of tax jurisdiction; whether the economic nexus-based tax jurisdiction and absence of a physical presence breach the constitutional doctrine of extraterritoriality or due process; and whether retrospective tax legislation breaches the principle of constitutional fairness. The book offers a politically informed analysis of the nexus principle and balances the dynamics of physical presence and economic nexus standards, based on an in-depth survey of the historical evolution of judicial pronouncements and international practices in this regard. Dr Singh’s book exposes an urgently needed missing link in the international source rule literature and takes a giant step towards solving the thorny question of appropriate tax apportionment. It sheds brilliant light on the policies states may adopt when signing new tax treaties, so that unintended results may be foreseen and avoided. Tax practitioners, taxation authorities, and academic researchers in the field of international tax law and policy will greatly appreciate the book’s forthright enhancement of the ability to defend challenges based on the nexus doctrine.

With a century of solid theory behind it, tax law confronts a new reality: the weakening of the tenacious link between the sovereignty of states and taxation. Yet it is to the continuity of certain themes and principles inherent in the various national tax systems that tax law scholarship continues to look, even as it develops new principles designed to meet the expanding processes of internationalization. This completely updated collection of essays offers an expert comparative analysis, conducted by a sample of the best international tax law scholars, of the fundamental theory of tax law and of the prospects in the near future of tax legislative systems. The emphasis falls naturally on tax theory, jurisprudence, and legislative development in the Member States of the European Union (particularly in Italy, Germany, and Spain), where the process of tax harmonization has been under way for many years. The effect of these processes, via the relevant tax treaties, on the tax systems of Japan and the United States provides a secondary emphasis. Practitioners and academics in tax law will find in this book an invaluable understanding of the challenges that tax law theory strives to meet at this crucial moment in economic history. The essays present a full and reliable exposition of the current theoretical approaches adopted by the various schools of thought in the field, as well as of the main contributions of jurisprudence.