Roundtable: The UN Framework Tax Convention

Research Theme

UN Framework Convention on International Tax Cooperation

In 2023, the United Nations General Assembly adopted a landmark resolution to begin negotiations on a new UN Tax Convention. This process marks a pivotal moment in efforts to reform the global tax system, aiming to make international tax governance more inclusive, transparent, and responsive to the needs of all countries – not just the wealthiest.

For low- and middle-income countries, international tax rules have often been shaped without sufficient representation or consideration of their realities. The convention negotiations offer a unique opportunity to address this imbalance and design a system that better supports domestic resource mobilisation, the most sustainable source of financing development.

Negotiations formally began in early 2025 and are expected to continue through 2027. Alongside the main convention, states are also negotiating two initial protocols: one on the taxation of cross-border services, and another on dispute prevention and resolution. Together, these instruments aim to create a more equitable and coherent framework for international tax cooperation.

ICTD is closely monitoring the developments and providing analysis and insights grounded in over a decade of research in lower-income countries.

Roundtable: The UN Framework Tax Convention

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UN Framework Convention on International Tax Cooperation Library

Journal Article

Relieving Double Taxation on Cross-Border Services: A Comparative Analysis of Major Exporting Countries

July 2026
Frederik Heitmüller, Aisha Aize Isa, Florian Dierich, Yvette Nakibuule Wakabi

Research in Brief

Global Rules, Local Realities: Lessons from the Global South on International Tax Standards

June 2026
Martin Hearson, Frederik Heitmüller, Florian Dierich

Working Paper

Assessing Nigeria’s Alignment with International Tax Standards: Adoption, Implementation, Relevance and Impact

June 2026
Marie-Louise Aren

Working Paper

Global Rules, Local Realities: Lessons from the Global South on International Tax Standards

June 2026
Martin Hearson, Frederik Heitmüller, Florian Dierich

Research in Brief

From Commitment to Effective Utilisation: Evaluating Nigeria’s Implementation of Tax Standards for Exchange of Information

May 2026
Bala Dahiru Abdullahi, Bilal Hamza Imam

Working Paper

From Commitment to Effective Utilisation: Evaluating Nigeria’s Implementation of Tax Standards for Exchange of Information

May 2026
Bala Dahiru Abdullahi, Bilal Hamza Imam

Partner PublicationPolicy Brief

The G20’s Crucial Role in an Uncertain Landscape of International Tax Cooperation

November 2025
Suranjali Tandon, Martin Hearson, Frederik Heitmüller, Florian Dierich

Policy Brief

Towards a New Solution for Taxing Cross-border Services? Trade-offs in Designing UN Tax Convention Protocol 1

August 2025
Florian Dierich

Research in Brief

Scenarios for Negotiating a UN Framework Convention on International Tax

February 2025
Frederik Heitmüller

Working Paper

Scenarios for Negotiating a UN Framework Convention on International Tax

January 2025
Frederik Heitmüller

Working Paper

The International Tax Regime Complex: Understanding Change in Global Tax Governance

October 2024
Katharina Kuhn, Lucinda Cadzow, Frederik Heitmüller, Martin Hearson, Tovony Randriamanalina

Partner Publication

A Fairer Global Tax Architecture

September 2024
Martin Hearson, Frederik Heitmüller, Mbakiso Magwape, Suranjali Tandon

Virtual

7 July 2026 – 14:00

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Timezone: Europe/London

This webinar launches the ‘Comparative Perspectives on International Tax from the Global South’ project, started by the International Centre for Tax and Development (ICTD), in 2024. The project examines how governments in seven countries — Ghana, Kenya, Nigeria, Pakistan, Peru,

Virtual

29 May 2026 – 13:00

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Timezone: Europe/London

The panel will evaluate current instruments and frameworks, their merits, and their limitations in order to contribute to the development of an exchange of information regime that is inclusive and universal.

Virtual

17 March 2026 – 14:00

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Timezone: Europe/London

This webinar will give you a clear picture of where things stand and what comes next on the UN Tax Convention Protocol 1 on cross-border services taxation.

Virtual

11 February 2026 – 18:15

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Timezone: Europe/London

ICTD Associate Postdoctoral Fellow Frederik Heitmüller will be speaking at a panel about the tax dispute resolution under the UN Framework Convention on International Tax, hosted by the International Institute for Sustainable Development (IISD).

Current

The Interaction of Different Tax Systems in the Taxation of Cross-border Services

Start date: 01/11/2025
Sol Picciotto
View bio
Research Affiliate

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