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Tax: Tax Controversy and Litigation

Tax laws are ever-evolving, and with increased scrutiny from the IRS, state tax agencies, and global revenue authorities, having experienced legal counsel is crucial. Our seasoned Tax Controversy lawyers provide strategic guidance and trusted advocacy to businesses and individuals facing complex tax disputes, helping them navigate audits, appeals, and litigation with confidence.

We have teams in multiple jurisdictions worldwide that guide clients through every phase of the tax examination and dispute process, from risk assessment and planning to examinations, administrative appeals, trials, and criminal defense. We help clients manage tax risks by providing preemptive strategies for transactions and documentation. We defend clients in interactions with tax authorities, including audits and appeals. When necessary, we provide litigation and trial advocacy in courts globally, including designated tax tribunals such as the US Tax Court and Court of Federal Claims. We also tailor strategies to protect clients’ interests in the face of fraud or criminal allegations.

Our Tax Controversy lawyers understand tax law from every angle. Our multidisciplinary approach provides comprehensive services at all levels:
 

Global Tax Disputes

We have a proven history of successfully representing multinational clients before tax authorities across multiple countries, and our seamless global solutions address country-by-country reporting, tax issues related to digital services, transfer pricing, permanent establishments, withholding tax, cross-border transactions, mutual agreement procedures (MAP), and advance pricing agreements (APA).

Audits and Investigations

We are trusted, knowledgeable advocates in audits and sensitive investigations, including those involving alleged fraud or criminal allegations, and we design and employ tailored strategies to protect clients’ interests and reputations. 

State and Local Tax (SALT) Disputes

We have decades of experience with SALT disputes, and our extensive knowledge spans a range of tax issues, including income, franchise, property, sales, excise, and gross receipts taxes.

Estate and Gift Tax Disputes

We have considerable experience with federal and state estate and gift tax disputes, assisting with audits, the appellate process, and complex valuation and compliance issues.

Chambers and Partners

Ranked by Chambers Asia-Pacific for Tax in Australia, 2025

Legal 500

Ranked by The Legal 500 EMEA for Tax in Italy, 2025

Other Recognitions

Ranked Tier 1 by Best Law Firms® for Tax Law, 2025

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