Tax Inspectors Without Borders is sending expert tax auditors to assistance-requesting host administrations in order to build audit capacity around the world!

Tax Inspectors Without Borders (TIWB) is a joint initiative of the Organisation for Economic Co-operation and Development (OECD) and the United Nations Development Programme (UNDP) supporting countries in building tax audit capacity.  TIWB Programmes complement the broader efforts of the international community to strengthen co-operation on tax matters and contribute to the domestic resource mobilisation efforts of developing countries.

Highlights from the 2024 Annual Report

‌‌Host Administration

Host Administration

Looking to improve your administration's tax audit capacity with the help of a TIWB Expert?

Expert at Desk


Like to travel and eager to share your tax expertise with other administrations?

 Partner Administration

Partner Assistance

Ready to help other countries develop their tax audit practices by seconding an official from your own administration?



Interested in helping fund the TIWB Initiative?

"TIWB programme has significantly enhanced Uganda Revenue Authority's (URA) capacity since 2017. This support has led to notable improvements in MNE compliance behaviour and revenue collection. TIWB's work methodology has boosted auditors' capabilities and confidence, advancing URA's transfer pricing audits from risk assessment to dispute resolution. In addition, the TIWB's wide network of experts enables it to source experts and collaborate with other tax administrations." 


Robert Luvuma, Manager, International Tax & Transfer Pricing, Uganda Revenue Authority