Tax Inspectors Without Borders TIWB

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is a joint OECD/UNDP initiative, sharing tax knowledge and skills through a targeted, real time "learning by doing" approach.

12/10/2026

📰 What’s next for international tax capacity building?

Bringing together tax administrations, development partners, regional tax organisations and international institutions, the TIWB Stakeholders Workshop 2026 provided a unique platform to discuss the future of the initiative, advancing dialogue on capacity building and experience sharing as means to strengthen domestic resource mobilisation across developing countries.

Key priorities highlighted through the workshop are presented in the Statement of Outcomes and include:

✅ Supporting countries in turning tax policy reforms into effective implementation through practical, hands-on assistance and knowledge sharing.

✅ Expanding partnerships to increase the reach and adoption of TIWB support in emerging areas.

✅ Deepening regional collaboration through peer-to-peer learning, South-South and triangular co-operation, helping countries share expertise and scale successful approaches.

✅ Strengthening country ownership, institutional capacity and long-term sustainability to ensure results endure beyond individual programmes.

✅ Driving the future of tax capacity building through innovation, stronger partnerships and the TIWB 2.0 framework.

The discussions held in Paris will help guide the next phase of the initiative, ensuring it remains responsive to countries' evolving needs and equipped to address the tax challenges of tomorrow.

📖 Read the Statement of Outcomes (French and Spanish translations forthcoming):https://www.tiwb.org/content/dam/tiwb/en/pdfs/statement-of-outcomes/Statement-of-Outcomes_TIWB-Stakeholders-Workshop-2026.pdf

07/10/2026

PNG IRC Shares Lessons from International Tax Capacity Building at the 2026 Tax Inspectors Without Borders (TIWB) Stakeholders Workshop in Paris

05/10/2026

🌐 TIWB Stakeholders Workshop 2026: Turning Dialogue into Action

On 1-2 October 2026, the Tax Inspectors Without Borders (TIWB) Stakeholders Workshop brought together members of the global TIWB community in Paris to exchange experiences, reflect on emerging challenges, and explore how this joint OECD-UNDP initiative can continue to evolve in response to countries’ changing needs.

💡 Discussions focused on:

🔹Reflecting on over a decade of impact: exploring what countries need, what works in practice, and how TIWB can build on lessons learned to deliver sustainable results.
🔹Expanding areas of support: discussing TIWB’s growing assistance, including transfer pricing, tax crime investigations, Country-by-Country Reporting, Automatic Exchange of Information, Global Minimum Tax implementation and digitalisation.
🔹Strengthening collaboration: advancing peer-to-peer learning, South-South co-operation, and the partnerships that underpin effective and lasting capacity development.
🔹Looking to the future: identifying opportunities to scale impact, deepen regional engagement, foster innovation and equip countries with the expertise required to navigate an increasingly complex global tax landscape.

🤝 A heartfelt thank you to all speakers, moderators and participants for sharing their experiences and valuable contributions. The insights and priorities discussed in the workshop will help shape the next chapter of TIWB's evolution, contributing to a more connected, collaborative and impactful global tax community.

🔗 Learn more about the workshop: https://www.tiwb.org/en/news-events/events/tiwb-stakeholders-workshop-2026

18/09/2026

🌍️ TIWB-CI: Advancing Tax Crime Investigation in Angola Through South-South Co-operation

Last week, the AGT - Administração Geral Tributária launched its first Tax Inspectors Without Borders Criminal Investigation (TIWB-CI) programme, marking an important step in strengthening Angola's ability to prevent, detect and investigate tax crime and related financial offences.

🏛️ More than 30 investigators and public officials from five agencies involved in tax and other financial crime investigations participated in a self-assessment workshop using the OECD Tax Crime Maturity Model. The exercise enabled participants to assess existing capabilities, identify strengths and opportunities for improvement, and establish priorities for future capacity-development.

🤝 The programme brings together experts from the Receita Federal do Brasil, with support from the European Union through Pro PALOP | TL programme, implemented by the United Nations Development Programme - UNDP, to work with Angolan authorities through the self-assessment and implementation phases. The collaboration will focus on strengthening institutional capacities and enhancing the country's capabilities to response to tax crime and related financial offences.

🛡️ The launch highlighted Angola's commitment to strengthening tax administration and promoting a whole-of-government approach to tackling tax crime and illicit financial activities, while demonstrating the value of South-South co-operation in improving public financial management.

🔗 Learn more about TIWB: https://www.tiwb.org

| | African Tax Administration Forum (ATAF) | PNUD Angola

07/09/2026

🗞️ In case you missed it: Tax Inspectors Without Borders (TIWB) 2026 Annual Report is now available

As TIWB moves into its second decade, the report looks both at what has been achieved and what lies ahead.

🌍 In the past decade, TIWB’s hands-on approach has supported 165 programmes across 71 jurisdictions, contributing to USD 2.72 billion in additional tax revenue raised and USD 7.67 billion assessed, thus helping to strengthen tax audit capacity and deliver tangible results. These achievements also provide a strong basis for further strengthening South-South cooperation, including through the TIWB Graduates Platform.

Looking forward, TIWB 2.0 marks the next phase of this work, expanding support to areas such as the implementation of global minimum tax rules, and addressing emerging challenges such as digitalisation, complex cross-border issues and evolving tax risks.

🔍 Explore the full report ➡️ https://www.oecd.org/en/publications/tax-inspectors-without-borders-annual-report-2026_22fc5338-en.html

11/08/2026

💡 New blog: What happens when beneficiaries become providers of expertise?

As Tax Inspectors Without Borders (TIWB) enters its second decade, South-South cooperation is becoming a defining force behind its success.

🌐 Through TIWB's expanding peer-to-peer network, tax administrations are moving from receiving support to sharing expertise with peers facing similar challenges, demonstrating that tax capacity building is a two-way exchange of knowledge and experience.

🤝 From Egypt supporting Seychelles to Colombia assisting Guatemala, and Maldives working with Botswana, these partnerships showcase the growing role of developing countries in helping to build stronger, more resilient tax systems across regions, while reinforcing hands-on collaboration and mutual learning.

🎓 The new TIWB Graduates Platform, launched under TIWB 2.0, is helping transform lessons learned into lasting impact. Countries such as Colombia, Egypt, Georgia, Maldives, and Zambia are demonstrating how expertise gained through TIWB can generate value well beyond the duration of their own programmes.

This is what sustainable capacity development looks like: building expertise, sharing knowledge, and creating a virtuous cycle that empowers countries to strengthen their institutions, enhances domestic resource mobilization, and helps finance sustainable development.

📚 Read our latest blog to discover how TIWB 2.0 is expanding country-led expertise and partnerships worldwide ➡️ https://sdgfinance.undp.org/news-events/beneficiaries-providers-enhancing-south-south-cooperation-tax-inspectors-without

30/07/2026

🏛️ Mauritius Advances a Whole-of-Government Approach to Tax Crime

Last week, officials from agencies across Mauritius came together under the country’s first TIWB – Criminal Investigation (TIWB-CI) programme to participate in an onsite workshop hosted by the Mauritius Revenue Authority (MRA), focused on strengthening the response to tax crime and related financial crimes.

📊 The workshop marked the first combined use of the OECD's Tax Crime Maturity Model and the World Bank Group’s National Risk Assessment for Tax Evasion and Money Laundering. Through discussions and self-assessment exercises, participants identified strengths, challenges and opportunities to further strengthen institutional frameworks, inter-agency cooperation and information-sharing mechanisms.

🤝 The strong engagement across institutions reflects Mauritius’ commitment to tackling tax crime through a coordinated, whole-of-government approach. Given the close links between tax crime and other forms of financial crime, effective collaboration and information sharing are critical to strengthening prevention, detection and enforcement efforts.

🔍 As the workshop concludes, the focus now shifts to the recommendations and action plan emerging from this process. Their successful implementation will help strengthen national capabilities to detect, investigate and address tax crime and related financial offences, while supporting long-term institutional development.

TIWB-CI is proud to support Mauritius on this important journey.

🔗 Learn more about TIWB: https://www.tiwb.org

UNDP-Mauritius | African Tax Administration Forum (ATAF)

30/07/2026

Stay up to date on international tax capacity-building with the Tax Inspectors Without Borders (TIWB) newsletter!

The latest edition features:
🔹 The launch of the TIWB 2026 Annual Report
🔹 New programmes in Benin, Guatemala, Montenegro and Seychelles
🔹 Argentina joining TIWB as a Partner Administration, and Colombia becoming the first TIWB Graduate in the LAC region
🔹 Key takeaways from TIWB’s side events at the FfD Forum and OECD Tax & Development Days 2026
🔹 A preview of the TIWB Stakeholders Workshop, taking place in October

Subscribers to the newsletter receive recent blog articles, press releases, programme, and event information directly throughout the year.

📧 Make sure you don’t miss the next update, subscribe here: https://newsletter.oecd.org/k/Oecd/tiwb_newsletter_sign_up_form

27/07/2026

🛡️ TIWB-CI: Strengthening Tax Crime Investigation in Mauritius

The Mauritius Revenue Authority (MRA) launched its first TIWB – Criminal Investigation (TIWB-CI) programme, marking an important step in strengthening the country's ability to prevent, detect and investigate tax crime and related financial offences. The programme builds on the successful completion of a TIWB audit programme supported by the African Tax Administration Forum (ATAF).

🌍 This programme is the first to combine the OECD's Tax Crime Maturity Model with the World Bank Group’s National Risk Assessment for Tax Evasion and Money Laundering. By using these tools together, Mauritius will assess its current capabilities, identify key tax crime and money laundering risks, and establish priorities for future reforms and capacity-building.

During the onsite workshop held from 20 to 24 July, participants engaged in discussions and self-assessment exercises aimed at:
✅ Assessing institutional strengths and opportunities to enhance the response to tax crime and related financial offences
✅ Identifying tax evasion and money laundering risks through a whole-of-government approach
✅ Developing practical recommendations and actions to support future reforms and strengthen inter-agency cooperation

This launch reflects Mauritius’ commitment to strengthening its response to tax crime and reinforces TIWB’s strong partnerships with ATAF and the World Bank in supporting jurisdictions to address emerging financial crime risks.

🔗 Learn more about TIWB: https://www.tiwb.org

UNDP-Mauritius

10/07/2026

The latest Tax Inspectors Without Borders (TIWB) newsletter is out! 📬

Here’s what’s new 👇
✅ The TIWB Annual Report 2026 is now available, looking at progress and the road ahead
✅ Highlights of TIWB’s participation in global events, including the FfD Forum and OECD Tax & Development Days 2026
✅ New programmes launched in Benin, Guatemala, Montenegro and Seychelles
✅ Colombia becomes the first TIWB Graduate in the LAC region
✅ Save the date: TIWB Stakeholders Workshop, 1–2 October in Paris

Discover how continues to strengthen tax administrations through hands-on capacity building and deliver lasting results where they matter most.

Read the full newsletter ➡️
🇬🇧 English: https://newsletter.oecd.org/q/1135oiA9KpGqYj2vy2a/wv
🇫🇷 Français : https://newsletter.oecd.org/q/1bykaYJGP7IoArcjgGB/wv
🇪🇸 Español: https://newsletter.oecd.org/q/123wNJqKHtvHjJrnMAgT/wv

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