The Tax Inspectors Without Borders Annual Report is a joint publication by the Organisation for Economic Co-operation and Development (OECD) Centre for Tax Policy and Administration and the United Nations Development Programme (UNDP).

The publications look back at joint OECD/UNDP achievements from July to June of each year, giving a comprehensive overview of the activities conducted and Tax Inspectors Without Borders (TIWB) programmes deployed in developing countries, as well as highlighting concrete results obtained over the year. The purpose is to update stakeholders on the initiative’s progress and achievements during the reporting period.