The Global Network of the World's Best Tax Minds
London · Global Network
World Tax Lawyers · Est. London
A network of the world's leading tax lawyers — convened by invitation, organised by jurisdiction, distinguished by standing.
Doctoral-level expertise. Global reach. One network — built for the era of Complexity.
OECD
Founded by former head of the OECD
Global
Worldwide Reach
PhD Level
All our members are PhD Level or PhD Cand. or Equivalent
500+
Published Papers
Since the OECD
Founded by a former head of the OECD's tax work
Our Approach
If the greatest minds in international tax can advise you, why settle for less?
Technology now allows the greatest minds to collaborate across borders with a speed that was unthinkable a few years ago. Organisations are evolving from pyramids to diamonds, from hierarchies of leverage to networks of expertise. The constraints that once forced clients to choose between depth and reach no longer apply.
We are an invitation-only, independent, entirely PhD-level organisation. Not another global law firm, not another accounting firm: a network of independent experts, each chosen for academic rigour, published scholarship and senior practical experience. To engage us is to access the people who have written the rules, trained the regulators and argued the leading cases.
Invitation only
Every member is peer-selected.
Doctoral standard
PhD-level, published, practising.
Organised by jurisdiction
Depth and reach, without compromise.
Four pillars. One network.
Advisory, controversy, Pillar Two and an accredited online tax centre, delivered by the people who shaped the rules.
01
International Tax Structuring & Transfer Pricing
Advisory where others stop, we go further. Our PhD level members have unique qualifications and experience. The questions clients bring us are rarely the ones that have a clean answer in a textbook. That is precisely the work we are built for.
Learn more
02
Tax Litigation & Dispute Resolution
Representation in tax audits, appeals, and international arbitration. Expert witness testimony and mutual agreement procedure (MAP) support — trusted by governments and corporations alike.
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03
GloBE Advisory
Impact assessment, safe-harbour analysis, group restructuring, and jurisdiction-by-jurisdiction implementation roadmaps — from PhD level people.
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04
WTL International Tax Centre
Our fully online International Tax Centre runs different courses including the CIOT-accredited course on Pillar Two. Academic mandate, working papers, and summits bringing together leading universities, and leading practitioners.
Learn moreThe network
Professors, former regulators, King's Counsel and senior practitioners, organised by jurisdiction and admitted by invitation.
Meet all experts
Asia-Pacific
Dr Matt Andrew
former Head of the Tax Treaty & TP at the OECD - Academic Consultant
UK
Dr Richard Collier
former Head of the Tax Treaty & TP at the OECD - Academic Consultant
UK
Dr Peter Harris
Professor of Law - Academic Consultant
UK
Dr Philip Baker KC
KC - Independent Barrister at Field Court Tax Chambers
USA
Dr Reuven S. Avi-Yonah
Professor of Law - USA
China
PhD Cand. Tizhong Liao
Former deputy director general of China’s State Administration of Taxation
Latest thinking
WTL is pleased to announce the inaugural Global Pillar Two Summit — bringing together the OECD Secretariat, national tax authorities, and the world's leading academics and practitioners.
Acquisition tax due diligence has been transformed by Pillar Two. A practical checklist for transaction teams.
Cross-border tax disputes have risen by more than 40% since 2020. Our litigation leads set out the drivers — and what general counsel should be doing about it.
WTL Research Center
Research & commentary
Original analysis, reviewed before release.
Three pillars
Weekly discussion groups, each with a rotating lead.
Seminars
Six to eight sessions a year, online and in person.
London · Global network
