International Tax

Research Theme

International Tax

Low-income countries are more dependent on corporate income tax revenue than richer countries, and at the same time, disproportionately affected by multinational tax avoidance. Our research on this theme investigates ways in which developing countries can protect their tax bases, including through simplified transfer pricing methods and improved tax treaty policies. It also examines the challenges and opportunities developing countries face from their participation in international tax negotiations.

ICTD has also been closely following the developments around the UN Tax Convention. Check out our latest research and analysis here.

International Tax

Led By

International Tax Library

Working Paper

Ghana and International Tax Standards: A Cautionary Tale?

December 2025
Isaac Danso Agyiri

Working Paper

Implementation of International Tax Standards in Lower- and Middle-Income Countries: The Experience of Uganda

December 2025
Dan Ngabirano

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

Tracking and Taxing Cross-Border Digital Transactions: The Case of VAT in Senegal

August 2025
Awa Diouf, Hannelore Niesten

African Tax Administration Paper

Tracking and Taxing Cross-Border Digital Transactions: The Case of VAT in Senegal

August 2025
Awa Diouf, Hannelore Niesten

Research in Brief

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

May 2025
Katharina Kuhn, Lucinda Cadzow, Frederik Heitmüller, Martin Hearson, Tovony Randriamanalina

Research in Brief

Implementation of Advance Pricing Agreements: The Case for Low- and Lower-Middle-Income Countries

May 2025
Mary Ongore, Prisca Musibi

Working Paper

Most Favoured Nation Clauses in Double Taxation Agreements: Identifying Problems and Recommending Policy Solutions for the Global South

May 2025
Manoj Kumar Sharma, Shiva Gaur, Namrata Rawat

Research in Brief

Most Favoured Nation Clauses in Double Taxation Agreements: Identifying Problems and Recommending Policy Solutions for the Global South

May 2025
Manoj Kumar Sharma, Shiva Gaur, Namrata Rawat

Working Paper

Implementation of Advance Pricing Agreements: The Case for Low- and Lower-Middle-Income Countries

May 2025
Mary Ongore, Prisca Musibi

Journal Article

Trading away tax sovereignty? How trade rules shape taxation of the digital economy in Africa

March 2025
Karishma Banga, Alexander Beyleveld, Martin Luther Munu

Virtual

6 February 2026 – 15:30

•

Timezone: Europe/London

ICTD Research Director Martin Hearson and Associate Postdoctoral Fellow Frederik Heitmüller will be speaking at the Academic Symposium on the UN Framework Convention on International Tax Cooperation, hosted by the International Tax Program at the NYU School of Law.

Virtual

3 December 2025 – 16:00

•

Timezone: Europe/London

Fresh from the UN Tax Convention negotiations in Nairobi earlier this month, Mukumba will discuss why reforming the global tax architecture matters for everyone, not just the global South that is pushing for change.

In person

25 September 2025 – 13:30

•

Timezone: Europe/London

Allard Pierson Museum, Oude Turfmarkt, Amsterdam, Netherlands
ICTD Research Officer Florian Dierich will be presenting the Centre’s research in a panel exploring policy options around an “improved DST” compared to other alternatives.

Virtual

16 July 2025 – 14:00

•

Timezone: Europe/London

Countries around the world are losing billions to illicit financial flows, tax avoidance, tax evasion, and unfair allocation of taxing rights—reflecting a global tax framework which is no longer fit for purpose. The UN Framework Convention on International Tax Cooperation

Completed

Effective Tax Rates of Multinational Enterprises in Low- and Middle-Income Countries: Evidence from Country by Country Reporting

Start date: 20/11/2019

Completed

Taxing international shipping in Africa: the source taxation alternative

Start date: 17/10/2019
Frederik Heitmüller
View bio
Associate Postdoctoral Fellow
Catherine Ngina Mutava
View bio
Research Affiliate
Hannelore Niesten
View bio
Associate Postdoctoral Fellow
Jalia Kangave
View bio
Associate Research Fellow
Michael Durst
View bio
Research Affiliate
Mick Moore
View bio
Research Fellow & Publications Editor
Headshot of Mustapha Ndajiwo
View bio
Research Affiliate
Rasmus Corlin Christensen
View bio
Research Affiliate
Rhiannon McCluskey
View bio
Research Affiliate
Ronald Waiswa
View bio
Research Affiliate
Sol Picciotto
View bio
Research Affiliate
Suranjali Tandon
View bio
Research Affiliate
Tovony Randriamanalina
View bio
Research Affiliate
Umair Javed
View bio
Research Affiliate
Wilson Prichard
View bio
Associate Research Fellow, ICTD and Chair, LoGRI

Sign up to our Newsletter

Stay up to date with the latest articles, publications, events and more.