Tax competition and coordination is one of the most pressing issues for tax authorities in modern economies, but it is a highly controversial subject. Some argue that tax competition is beneficial by forcing governments to impose efficient tax prices on residents for the provision of public services. Further, some argue that tax competition is also beneficial by limiting the power of governments to levy taxes. Others take a different view - in a world without coordinated tax policies, governments choose sub-optimal levels of public services financed by inefficient taxes that are either too high or too low by ignoring spillovers imposed on other jurisdictions. Capital Mobility and Tax Competition draws out the most important issues of uncoordinated tax policy at the international level for cross-border transactions. The discussion focuses on mobile tax bases, specifically in relation to investment and financial transactions. The main issue for consideration in this survey is whether taxation of income, specifically capital income will survive, how border crossing investment is taxed relative to domestic investment, and whether welfare gains can be achieved through international tax coordination. This survey derives some of the key results on the taxation of international investment in variants of one model of multinational investment. Finally, the authors emphasize the problem of tax competition and financial arbitrage, an issue which is somewhat neglected in the existing survey literature.

Rich people stash away trillions of dollars in tax havens like Switzerland, the Cayman Islands, or Singapore. Multinational corporations shift their profits to low-tax jurisdictions like Ireland or Panama to avoid paying tax. Recent stories in the media about Apple, Google, Starbucks, and Fiat are just the tip of the iceberg. There is hardly any multinational today that respects not just the letter but also the spirit of tax laws. All this becomes possible due to tax competition, with countries strategically designing fiscal policy to attract capital from abroad. The loopholes in national tax regimes that tax competition generates and exploits draw into question political economic life as we presently know it. They undermine the fiscal autonomy of political communities and contribute to rising inequalities in income and wealth. Building on a careful analysis of the ethical challenges raised by a world of tax competition, this book puts forward a normative and institutional framework to regulate the practice. In short, individuals and corporations should pay tax in the jurisdictions of which they are members, where this membership can come in degrees. Moreover, the strategic tax setting of states should be limited in important ways. An International Tax Organisation (ITO) should be created to enforce the principles of tax justice. The author defends this call for reform against two important objections. First, Dietsch refutes the suggestion that regulating tax competition is inefficient. Second, he argues that regulation of this sort, rather than representing a constraint on national sovereignty, in fact turns out to be a requirement of sovereignty in a global economy. The book closes with a series of reflections on the obligations that the beneficiaries of tax competition have towards the losers both prior to any institutional reform as well as in its aftermath.

An ongoing debate in the tax competition literature is whether a system of countries or regions should restrict the preferential tax treatment of dierent types of rms or capital. We further investigate this issue by departing from the bulk of the literature in three ways: (1) rather than maximize only tax revenue, governments also put pos- itive weight on the income generated by resident-owned rms; (2) under preferential taxation, rms are distinguished by their country of origin; and (3) the competing regions are allowed to dier in size. Under the assumption of uniformly-distributed moving costs, identical regions always prefer the non-preferential regime. But when a small and large region compete, the small region prefers the preferential regime in some cases. We also identify non-uniform distributions of moving costs where the pref- erential regime is preferred by identical competing regions. This nding is related to dierences in tax-base elasticities.