Share TIWB is a joint OECD-UNDP initiative that deploys qualified experts in developing countries across Africa, Asia, Eastern Europe, Latin America and the Caribbean to help build tax capacity in the areas of audit, criminal tax investigations and the effective use of automatically exchanged information. TIWB assistance has led to increased domestic resource mobilisation in some of the least developed countries in the world. During the fifth virtual TIWB Governing Board meeting on 27 April 2021, co-chaired by the OECD Secretary-General, Mr. Angel Gurría, and UNDP’s Administrator, Mr. Achim Steiner, participants celebrated the mobilisation of more than USD 1 billion in additional tax revenues for developing countries, with nearly three times that amount in total tax assessments. The meeting highlighted TIWB’s success and commended the ability of the joint OECD and UNDP teams to maintain operations despite COVID-19 pandemic travel restrictions in 2020 and 2021.