This report is the ninth edition of the OECD's Tax Administration Series. It provides internationally comparative data on aspects of tax systems and their administration in 59 advanced and emerging economies.

Widespread voluntary tax compliance plays a significant role in countries’ efforts to raise the revenues necessary to achieve Sustainable Development Goals. As part of this process, governments are increasingly reaching out to taxpayers – current and future – to teach, communicate and assist them in order to foster a “culture of compliance” based on rights and responsibilities, in which citizens see paying taxes as an integral aspect of their relationship with their government.

Tax Administration 2015 is a comprehensive survey of tax administration systems, practices and performance across 56 advanced and emerging economies (including all OECD, EU, and G20 members).

In Imposing Standards, Martin Hearson shifts the focus of political rhetoric regarding international tax rules from tax havens and the Global North to the damaging impact of this regime on the Global South. Even when not exploited by tax dodgers, international tax standards place severe limits on the ability of developing countries to tax businesses, denying the Global South access to much-needed revenue. The international rules that allow tax avoidance by multinational corporations have dominated political debate about international tax in the United States and Europe, especially since the global financial crisis of 2007–2008. Hearson asks how developing countries willingly gave up their right to tax foreign companies, charting their assimilation into an OECD-led regime from the days of early independence to the present day. Based on interviews with treaty negotiators, policymakers and lobbyists, as well as observation at intergovernmental meetings, archival research, and fieldwork in Africa and Asia, Imposing Standards shows that capacity constraints and imperfect negotiation strategies in developing countries were exploited by capital-exporting states, shielding multinationals from taxation and depriving nations in the Global South of revenue they both need and deserve. Thanks to generous funding from the Gates Foundation, the ebook editions of this book are available as Open Access volumes from Cornell Open (cornellpress.cornell.edu/cornell-open) and other repositories.

This book analyzes the tax disruptive aspects of new digital business models to determine the need for new tax measures to address the tax challenges of the digitalization of the economy, and presents a proposal for the adoption of a Digital Data Tax (DDT) and a Global Internet Tax Agency (GITA).

People pay taxes for two reasons. On the positive side, most people recognize, even if grudgingly, that payment of tax is a duty of citizenship. On the negative side, they know that the law requires payment, that evasion is a crime, and that willful failure to pay taxes is punishable by fines or imprisonment. The practical questions for tax administration are how to strengthen each of these motives to comply with the law. How much should be spent on enforcement and how should enforcement be organized to promote these objectives and achieve the best results per dollar spent? Over the last few years, the U.S. Congress has restricted spending on tax administration, forcing the Internal Revenue Service to curtail enforcement activities, at the same time, that the number of individual filers has increased, tax rules have become more complex, and more business have become multinational operations. But if too many cases of tax evasion go undetected and unpunished, those who may have grudgingly paid their taxes may soon find it easier to join the scofflaws. These events in combination have created a genuine crisis in tax administration. The chapters in this volume evaluate the capacity of authorities to enforce the tax laws in a modern, global economy and examine the implications of failing to do so. Specific aspects of tax law, including tax shelters, issues relating to small businesses, tax software, role of tax preparers, and the objectives of tax simplification are examined in detail. The volume also builds a conceptual basis for future scholarship, with regard not only to tax administration, but also to such fundamental questions as whether taxpayers respond mostly to economic incentives or are influenced by their experiences with the filing process and what is the proper framework for evaluating the allocation of resources within the IRS.

New technologies are changing the way that tax administrations, taxpayers and their advisers interact, leading to a reduction in the compliance cost for taxpayers, a level playing field for large and small businesses, and fewer opportunities to engage in aggressive tax practices. Although entering a new world where processes are supported by machines inevitably disrupts traditional ways of working, the contributors to this indispensable book reveal the enormous potential of ‘tax technology’ to positively transform tax compliance, clearly showing both government and business how to manage the transition from the old to the new. With detailed treatment of the technology available in the tax field, the authors describe how to secure its benefits in such ways as the following: electronic balance sheets and invoices; automated transmission to tax authorities; innovative analytics applications; blockchain in tax law processes; process mining in VAT; real-time reporting with cryptography; and meeting the challenges to taxpayers’ rights to privacy and personal data protection. The contributions draw on an international conference held under the auspices of the Digital Economy Taxation Network at the Vienna University of Economics and Business in December 2020. The perspective throughout focuses on how to achieve better tax compliance at a lower cost. For this reason, this full-scale, practical guide on how to adapt tax law to new technologies and how to apply tax tech processes in practice will be welcomed by tax practitioners, tax administrations, and academics across the entire tax community.

Building on previous FAD work in the tax administration field, this paper defines broad criteria for diagnosing the problems in a country’s tax administration and formulating an appropriate reform strategy. To be effective, this strategy should be based on the size of the tax gap and the country’s particular circumstances. This paper discusses some guiding principles which have provided the basis for successful reforms, including: reducing the tax system’s complexity, encouraging taxpayers’ voluntary compliance, differentiating the treatment of taxpayers by their revenue potential, and ensuring the reform’s effective management. Also discussed are specific bottlenecks that hinder the effectiveness of the tax administration’s operations.

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”.

Taxation has been seen as the domain of charisma-free accountants, lawyers and number crunchers – an unlikely place to encounter big societal questions about democracy, equity or good governance. Yet it is exactly these issues that pervade conversations about taxation among policymakers, tax collectors, civil society activists, journalists and foreign aid donors in Africa today. Tax has become viewed as central to African development. Written by leading international experts, Taxing Africa offers a cutting-edge analysis on all aspects of the continent's tax regime, displaying the crucial role such arrangements have on attempts to create social justice and push economic advancement. From tax evasion by multinational corporations and African elites to how ordinary people navigate complex webs of 'informal' local taxation, the book examines the potential for reform, and how space might be created for enabling locally-led strategies.