The book describes the difficulties of the current international corporate income tax system. It starts by describing its origins and how changes, such as the development of multinational enterprises and digitalization have created fundamental problems, not foreseen at its inception. These include tax competition—as governments try to attract tax bases through low tax rates or incentives, and profit shifting, as companies avoid tax by reporting profits in jurisdictions with lower tax rates. The book then discusses solutions, including both evolutionary changes to the current system and fundamental reform options. It covers both reform efforts already under way, for example under the Inclusive Framework at the OECD, and potential radical reform ideas developed by academics.

Presents the recent trends in the taxation of corporate income in OECD countries, discusses the main drivers of corporate income tax reform and evaluates the gains of fundamental corporate tax reform.

Interest in corporate tax reform that lowers the rate and broadens the base has developed in the past several years. Some discussions by economists in opinion pieces have suggested there is an urgent need to lower the corporate tax rate, but not necessarily to broaden the tax base, an approach that presents some difficulties given current budget pressures. Others see the corporate tax as a potential source of revenue. Arguments for lowering the corporate tax rate include the traditional concerns about economic distortions arising from the corporate tax and newer concerns arising from the increasingly global nature of the economy. Some claims have been made that lowering the corporate tax rate would raise revenue because of the behavioral responses, an effect that is linked to an open economy. Although the corporate tax has generally been viewed as contributing to a more progressive tax system because the burden falls on capital income and thus on higher-income individuals, claims have also been made that the burden falls not on owners of capital, but on labor income. The analysis in this report suggests that many of the concerns expressed about the corporate tax are not supported by empirical evidence. Claims that behavioral responses could cause revenues to rise if rates were cut do not hold up on either a theoretical or an empirical basis. Studies that purport to show a revenue-maximizing corporate tax rate of 30% (a rate lower than the current statutory tax rate) contain econometric errors that lead to biased and inconsistent results; when those problems are corrected the results disappear. Cross-country studies to provide direct evidence showing that the burden of the corporate tax actually falls on labor yield unreasonable results and prove to suffer from econometric flaws that also lead to a disappearance of the results when corrected, in those cases where data were obtained and the results replicated. Many studies that have been cited are not relevant to the United States because they reflect wage bargaining approaches and unions have virtually disappeared from the private sector in the United States. Overall, the evidence suggests that the tax is largely borne by capital. Similarly, claims that high U.S. tax rates will create problems for the United States in a global economy suffer from a misrepresentation of the U.S. tax rate compared with other countries and are less important when capital is imperfectly mobile, as it appears to be. Although these new arguments appear to rely on questionable methods, the traditional concerns about the corporate tax appear valid. While an argument may be made that the tax is still needed as a backstop to individual tax collections, it does result in some economic distortions. These economic distortions, however, have declined substantially over time as corporate rates and shares of output have fallen. Moreover, it is difficult to lower the corporate tax without creating a way of sheltering individual income given the low tax rates on dividends and capital gains. A number of revenue-neutral changes are available that could reduce these distortions, allow for a lower corporate statutory tax rate, and lead to a more efficient corporate tax system. These changes include base broadening, reducing the benefits of debt finance through inflation indexing, taxing large pass-through firms as corporations, and reducing the tax at the firm level offset by an increase at the individual level. Nevertheless, the scope for reducing the tax rate in a revenue-neutral way may be limited.

This annual publication provides details of taxes paid on wages in OECD countries. It covers personal income taxes and social security contributions paid by employees, social security contributions and payroll taxes paid by employers, and cash benefits received by workers. Taxing Wages 2021 includes a special feature entitled: “Impact of COVID-19 on the Tax Wedge in OECD Countries”.

Middle-class households feel left behind and have questioned the benefits of economic globalisation.

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.

This report presents studies and data available regarding the existence and magnitude of base erosion and profit shifting (BEPS), and contains an overview of global developments that have an impact on corporate tax matters.