This report from the Secretariat covers Tax Inspectors Without Borders (TIWB) activities from May 2018 to April 2019 - TIWB's third full year of operations under the OECD/UNDP partnership arrangements.

Chapter 1 situates TIWB in the fast-moving tax and development landscape. Chapter 2 provides details on TIWB targets, trends and achievements, including key events and activities undertaken in the year. Chapter 3 provides details of results achieved and measurement of outcomes. Chapter 4 highlights lessons learned, including challenges and strategies going forward. Chapter 5 highlights key organisational developments and Chapter 6 provides the draft work plan for the coming year.