Introduction

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

Introduction

Methodology

Tax Controversy Leaders is a guide to the leading tax dispute resolution lawyers and advisers in the world. In addition to highlighting tax professionals, the guide also includes litigators and barristers who may not practice tax on a day-to-day basis.

Inclusion in this guide is based on a minimum number of nominations received. Besides the required number of nominations, entrants must also possess evidence of outstanding success in the past year and consistently positive feedback from peers and clients. Firms and individuals cannot pay to be recommended in the Tax Controversy Leaders guide.

We are witnessing a time of heightened controversy, with multinationals and tax authorities around the world busy challenging or defending tax strategies and viewpoints at various stages of a dispute.

As such, litigation experts are increasingly in demand.

The global tax controversy landscape is only going to get more complex. As taxpayers and authorities adjust to new standards and mechanisms, enhanced enforcement actions, new reporting requirements, automatic exchange of information, and multilateral risk assessment processes are likely to lead to increased audits and disputes, creating new challenges and corresponding uncertainty for taxpayers.

Aside from BEPS, state aid cases in the European Union, disputes arising from the controversial diverted profits tax in the UK and Australia, and maybe soon New Zealand too, are creating debate over the right approach to tax practices. Moreover, new indirect tax regimes in India and the Gulf Cooperation Council's member states will inevitably lead to disputes that will ultimately evolve how the rules are applied. In the US, meanwhile, the Internal Revenue Service continues to pursue transfer pricing issues and is aggressively litigating such cases. However, its loss against Amazon showed it cannot always win, and its pending appeal against Medtronic's TP practices will once again raise debate and interest in TP matters.

Reliable expert advice regarding such tax disputes and litigation has never before been more valuable for businesses and governments alike.

With all of this in mind, it is clear that taxpayers need access to lawyers and advisers with experience in all stages of tax controversy. The remit of tax controversy advisers now extends far beyond the courtroom with many taxpayers seeking advice on tax dispute prevention techniques. In addition, many tax controversy advisers provide services on tax audit management practices, global strategic planning of tax audits and disputes, tax risk management, analysis and disclosure, mutual agreement procedures, advance pricing agreements and alternative tax dispute resolution.

We hope that this seventh edition of the Tax Controversy Leaders guide will provide you with the confidence to obtain reliable and trustworthy advice in each of the areas highlighted above, in each of the 60 jurisdictions covered.

Anjana Haines,

Editor, International Tax Review

more across site & shared bottom lb ros

More from across our site

The firm has appointed Deloitte’s former tax leader for Thailand to lead the new operation, which builds on considerable Asian investment in recent months
The Donald Trump administration could use legislation from 1930 if the Supreme Court blocks its tariffs; in other news, China has updated its VAT refund procedures
Braun gives ITR an exclusive insight into WTS Digital’s UK launch of its AI product, which can free up more than 1,500 hours per month by reducing routine tasks
Long tells ITR about her varied role, why curiosity is a key characteristic for the tax professional, and what she’d be doing if she wasn’t working in tax
The choice facing governments is not whether to adopt AI in taxation, but how to do so in a way that upholds the principles of tax fairness, writes Neil Kelley
As ITR’s client data reveals discontent with German tax advisers’ cost management, Grant Thornton’s local TP head insists it’s a two-way street
Uncertainty isn’t always a bad thing, but it’s easy to see how the Trump administration’s IRS commissioner merry-go-round may serve to undermine business confidence
The EU defended its ‘sovereign right’ to impose the tax in the face of US tariff threats; in other news, the US deputy Treasury secretary resigned after just five months
Ascoria’s chief revenue officer shares her career wisdom garnered from the disparate worlds of tax technology, electric cables, radio DJing and more
Businesses no longer have a choice when it comes to tax technology transformation. Pavlo Boyko of TMF Group says the question is simply: sink or swim?
Gift this article