The definitive guide to the world's leading tax firms
ITR World Tax is the trusted authority on the global tax and transfer pricing markets, recognising the firms and professionals delivering the highest standards of technical expertise and client service. Our research provides an independent assessment of who is shaping tax advisory and representative work across jurisdictions and disciplines worldwide.
Through an extensive research programme that incorporates firm submissions, client feedback, peer review and market intelligence, we identify the firms and individuals leading the profession. The result is a comprehensive resource that helps organisations make informed decisions when selecting tax advisers and allows firms to showcase their expertise on a global stage.
Rankings Analysis
Awards
World Tax Rankings 2026: Deloitte and DLA Piper are top of the world
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