Global Tax 50 2015: Winnie Byanyima

International Tax Review is part of Legal Benchmarking Limited, 1-2 Paris Garden, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2025

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Global Tax 50 2015: Winnie Byanyima

Executive director, Oxfam international

Winnie Byanyima

Winnie Byanyima is a new entry this year

Winnie Byanyima has made this year's Global Tax 50 list for her influential role in highlighting the impact of taxation (and tax policymakers) on human rights and inequality.

The human rights advocate and globally-recognised expert on women's rights has made an active contribution to the debate over global tax policy issues, particularly during the World Bank and IMF annual meeting in Lima, Peru, which focused on inequality and the endorsement of the OECD's BEPS package.

"Corporate tax dodgers deprive Latin America of half its potential tax revenue," says Byanyima. "This is immoral and unsustainable. Finance ministers must crack down on them if they are serious about tackling poverty and inequality."

"Extreme inequality isn't just a moral wrong. We know that it hampers economic growth and it threatens the private sector's bottom line," she says.

The Global Tax 50 2015

View the full list and introduction

The top 10 • Ranked in order of influence

1. Margrethe Vestager

2. Pascal Saint-Amans

3. Wang Jun

4. Arun Jaitley

5. Marissa Mayer

6. Will Morris

7. Ian Read

8. Pierre Moscovici

9. Donato Raponi

10. Global Alliance for Tax Justice

The remaining 40 • In alphabetic order

Brigitte Alepin

Andrus Ansip

Tamara Ashford

Mohammed Amine Baina

Piet Battiau

Elise Bean

Monica Bhatia

David Bradbury

Winnie Byanyima

Mauricio Cardenas

Allison Christians

Rita de la Feria

Marlies de Ruiter

Judith Freedman

Meg Hillier

Vanessa Houlder

Kim Jacinto-Henares

Eva Joly

Chris Jordan

Jean-Claude Juncker

Alain Lamassoure

Juliane Kokott

Armando Lara Yaffar

Liao Tizhong

Paige Marvel

Angela Merkel

Zach Mider

Richard Murphy

George Osborne

Achim Pross

Akhilesh Ranjan

Alan Robertson

Paul Ryan

Tove Maria Ryding

Magdalena Sepulveda Carmona

Lee Sheppard

Parthasarathi Shome

Robert Stack

Mike Williams

Ya-wen Yang

more across site & shared bottom lb ros

More from across our site

The long-awaited overhaul of Brazil’s tax systems will cause uncertainty for businesses. Experts from Lavez Coutinho argue it is essential for company leaders to get ahead of the issues
‘KPMG Workbench’ has a network of 50 AI assistants and chatbots that will assist clients; in other news, Baker McKenzie hired a former US deputy attorney general and tax disputes expert
The UK tax agency reported that the total estimated tax gap for the 2023/24 tax year is £46.8 billion
The case shows that legal relationships between parties bear significance and should be given sufficient weight in TP analyses, one local adviser says
Burford Capital said it hopes that the US Congress will not ‘set back’ business growth and innovation by introducing a tax on litigation funding profits
The new framework simplifies the process of relocating eligible employees to Luxembourg and offers a ‘clear and streamlined benefit’, says Alexandra Clouté of Ashurst
The Portuguese firm’s managing partner tells ITR about his love of Sporting Lisbon, the stress of his '24-hour role', and why tax is never boring
The reduction would still ‘leave room’ for pillar two and further reductions would be possible, one expert tells ITR
Funding from private equity house EQT will propel WTS Germany to compete with the ‘big four’, the firm’s leaders told ITR in an extensive interview
New Zealand is bucking the trend of its international counterparts with its investment-friendly visa approach. Here’s what high-net-worth investors need to know
Gift this article