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Resolving your most complex tax challenges

With years of experience achieving successful resolutions, our global tax controversy team is widely recognized as a leader in tax disputes and litigation. We will be your reliable strategic partner, helping you resolve the most difficult and complex tax controversy matters you will ever face in any jurisdiction.

Globally, tax authorities are raising more challenges against taxpayers. And they are collaborating more with each other through information sharing, multi-country task forces, joint audits, and initiatives such as the OECD’s International Compliance Assurance program.

This means you need a robust and strategic approach to managing tax risks and responding to challenges.

Our clients include multinational corporations in a range of industries, privately owned companies, partnerships, limited liability companies, high-net-worth individuals, and family offices.

We help with all aspects of complex and sophisticated tax controversies, including criminal tax investigations. Our services include audit defense, penalty-mitigation strategies, litigation and trial advocacy, advance pricing agreements, ICAP agreements, defense files, and mutual agreement procedures.

“I have personally worked with the DLA Piper tax team for close to 15 years now and it has been a remarkable experience. The key strength of the team is the solution-oriented mindset, and prompt and anytime response at very short notice.”

Client, Legal 500 2022

In addition to significant experience before taxing authorities, tax tribunals and courts across the world, we have experience in all forms of alternative dispute resolution, including formal and informal mediations, and arbitration.

Clients often face similar issues in multiple jurisdictions. Close cooperation between our 40+ international offices and teams in other areas of law means we can provide comprehensive, collaborative support on cross-border controversies.

We design a centralized strategy to achieve the best resolution possible for each client, ensuring this aligns with local best practices, is consistent with long- and short-term objectives, and addresses individualized concerns such as cost, timing, operational impact, reputational risk, and multi-year impact.

Our lawyers and economists are repeatedly recognized as leaders in tax disputes and tax litigation by Chambers, World Tax and The Legal 500. Many have more than 20 years of experience in private practice and have served as trial advocates or in leadership roles for the IRS or the US Department of Justice.

We will work closely with you to ensure a strong local defense, mitigate global exposure, and achieve an effective resolution.

Awards and recognition


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