OECD tracks tax co-operation for development, showing how transparency, BEPS participation and technical assistance are supporting stronger revenue systems in developing countries

The progress report reviews OECD tax and development activities in 2025, including work to help developing countries tackle tax evasion and avoidance, improve domestic revenue mobilisation and participate in international tax initiatives. It also covers targeted technical assistance and the tenth anniversary of the OECD/UNDP Tax Inspectors Without Borders initiative, while setting out priorities for 2026.