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Tax crimes negatively affect all countries, developed and developing alike. They obstruct governments’ ability to collect revenue and undermine trust in the legal and financial system which can lead to a wide range of adverse outcomes. Tax crime is often closely linked to other forms of serious domestic and transnational crime, such as money laundering, corruption, the trafficking of drugs or people, and terrorist financing. This report sets out the rationale for adopting a national strategy for countering tax crime and to support jurisdictions’ efforts in designing such strategies, drawing from the practices of members of the OECD’s Task Force on Tax Crimes and other Crimes (TFTC).

This report looks back at 15 years of tax and development work at the OECD charting the evolution of the OECD’s engagement with, and inclusion of, developing countries in its tax work from 2009 to 2024. Beginning with the restructuring of the Global Forum on Transparency and Exchange of Information for Tax Purposes in 2009, through the BEPS Actions, the establishment of the Inclusive Framework on BEPS and negotiations on the Two Pillar Solution to Address the Tax Challenges of the Digitalising Economy, it shows how OECD initiatives have combined the momentum for multilateral tax co-operation with the increased focus on taxation in international development, to develop a range of tools, instruments and forums with wide participation from developing counties. Accompanying the move to multilateralism in tax matters, the OECD has also sought to increase the availability of data on taxation, for example through the Global Revenue Statistics Database, and support more integrated tax and development policy thinking, for example on the taxation of development assistance. Concurrently there has been a continuous growth in the OECD capacity building activities, now reaching over 30,000 officials in over 100 countries annually. Notable among these initiatives is the groundbreaking joint OECD/UNDP Tax Inspectors Without Borders initiative. The report features several case studies highlighting the impacts across various countries, as well as the wide range of partnerships forged by the OECD to harness taxation’s potential in advancing sustainable development.

This report reflects on the implications of the evolving international tax policy landscape for international tax co-operation, and provides an update on the 2022 Report 'Tax Co-operation for the 21st Century' and the 2023 Progress Report. The principles of tax co-operation set out in those reports have become even more important in light of the implementation of the Global Minimum Tax, which took effect from the beginning of this year. This report sets out the advances being made in implementing the vision for co-operation amongst tax administrations with a specific focus on the Global Minimum Tax. It also sets out areas of tax co-operation beyond the corporate tax system looking at recent developments in the exchange of information between tax administration as well as other transparency initiatives with respect to taxation of individuals. Finally, it addresses the implications of these developments in the international tax system for developing countries with respect to both direct and indirect taxes as well as the digitalisation of tax administration. This report was prepared by the OECD to inform the discussions at the May 2024 meeting of G7 Finance Ministers and Central Bank Governors, at the request of the G7 Italian Presidency.

This guide builds on the Reform Management Fundamentals: Setting up a Reform Program reference guide to provide an understanding of recognized good practices to ensure the success of implementing tax administration reform programs. It presents proven management practices for implementing reform projects that have been applied by tax administrations around the world. It is part of a series of Virtual Training to Advance Revenue Administration (VITARA) reference guides that have been developed based on the content of the VITARA online modules.

This reference guide provides a good grounding in what tax administration reform is, why it is important, what is involved in implementing it, and who should be involved in the reform process. The materials covered in this reference guide are designed to cover the key practices that have been proven to assist the management of reform efforts and will give the tax administrations the best chance of success in developing and implementing reform programs. This guide is divided into five chapters highlighting key terms and definitions, processes to develop and manage a reform program, and how to plan and manage a reform project. It is part of a series of Virtual Training to Advance Revenue Administration (VITARA) reference guides that have been developed based on the content of the VITARA online modules.

This report compiles comparable tax revenue statistics over the period 1990-2022 for 27 Latin American and Caribbean (LAC) countries. It provides harmonised data on the level and structure of tax revenues based on the OECD classification of taxes, thereby enabling comparison of national tax systems on a consistent basis, both across the region and with other economies globally. The report includes two special features: one examines fiscal revenues from non-renewable natural resources in the LAC region in 2022 and 2023, while the second calculates equivalent fiscal pressure in the LAC region. The publication is jointly undertaken by the OECD Centre for Tax Policy and Administration, the OECD Development Centre, the Inter-American Center of Tax Administrations (CIAT), the Economic Commission for Latin America and the Caribbean (UN-ECLAC), and the Inter-American Development Bank (IDB).

This report looks back at TIWB’s achievements from July 2022 to December 2023. Chapter 1 describes TIWB in the evolving international taxation and development context. Chapter 2 discusses TIWB programmes and operations. Chapter 3 provides information on current and future areas of TIWB technical assistance. Chapter 4 highlights results obtained over the past year. Chapter 5 describes TIWB participation at international events and the initiative’s communication efforts. Finally, Chapter 6 sets out the work plan for the year and provides an overview of the previous year’s objectives and performance.