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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.

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News and events

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Event
Blue Globe viewing from space at night with connections between cities
29 May 2026
Webinar: Four definitions to change the world webinar series – Foreseeable relevance

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. …

News
Logo of the United Nations embossed on a glass wall in the UN Headquarters in New York City
March 2026
Tax treaties in spotlight as UN Tax Convention negotiations deepen

When member-states convene in New York this August for the fifth substantive session on the UN Framework Convention on International Tax Cooperation (UN Tax Convention), negotiators will navigate increasingly technical and politically contested questions. Among them is how the new Convention will relate to the bilateral tax treaties already in force around the world….

Event
Globe showing the African continent on top of a pile of international currencies.
17 March 2026
Webinar: Protocol 1 in focus – progress and the way forward

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….

Featured Publications

Policy Brief

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

August 2025
Florian Dierich
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Related blogs

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The UN headquarters in Geneva, Switzerland, flanked by a row of flags of different countries.
November 2025|
Blog

A new era or business as usual? Why the UN Expert Committee on Tax is still relevant

by Florian Dierich

The Committee’s most prominent contribution is the UN Model Tax Convention, which provides model language for the negotiation of bilateral tax treaties. While originally based on the OECD Model, it has increasingly diverged to better reflect the interests of capital-importing states, most notably in its stronger source-based taxing rights….

Empty hall of the United Nations General Assembly at the UN headquarters in New York.
November 2025|
Blog

UN Tax Convention Reading List Part 3: Protocol 2 – Dispute Resolution and Prevention

by Florian Dierich & Frederik Heitmüller

In Part 3 of our UN Tax Convention reading list, we bring together key research and analysis on dispute prevention and resolution….

A photo of the UN Headquarters in New York with flags of several countries flying high.
October 2025|
Blog

UN Tax Convention Negotiations: Where are we at and where are we headed?

by Frederik Heitmüller & Florian Dierich

In preparation for the Nairobi session, two documents were shared for discussion: a Framework Convention Template prepared by the Co-lead of Workstream 1, which contains draft language for some of the commitments, and a Co-Leads’ Concept Note on Ideas for Potential Solutions for the protocol on dispute resolution and prevention. The protocol on Cross-border services is not on the agenda for Nairobi, but discussions are continuing in the Workstream….

A city landscape superimposed by a transluscent globe with currency symbols around it.
October 2025|
Blog

UN Tax Convention reading list part 2: Protocol 1 – Taxation of cross-border services

by Florian Dierich & Frederik Heitmüller

The negotiations for Protocol 1 present a genuine opportunity to revisit how cross-border services are taxed. But, as we explored in our recent policy brief, this is not without difficult trade-offs involving legal form, tax base, thresholds, nexus rules, and treaty interaction….

Large convening hall with the UN logo at the front
September 2025|
Blog

UN Tax Convention reading list part 1: The UN process and institutional context

by Florian Dierich & Frederik Heitmüller

We have put together this reading list to help navigate the growing literature on the UN Tax Convention, which is thematically divided into three parts: this first part is on the UN process and institutional context….

Donald Trump standing behind a microphone with a book in hand and in front of a background of white and red strips.
April 2025|
Blog

The collapse of international tax truce: Trump’s impact on digital taxation

by Florian Dierich

U.S. President Donald Trump’s decisions have triggered significant shifts in international politics with ripple effects extending…

Research Projects

Completed Project

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

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[email protected]
+44 (0) 1273 606261
International Centre for Tax and Development, Institute of Development Studies (IDS) Brighton, BN1 9RE, United Kingdom
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