About Darianne De Leon

Darianne De Leon is a United States Tax Court-trained attorney who represents companies and individuals in high-stakes federal tax disputes. She advises corporations, private clients and organisations in tax controversies, administrative appeals and litigation involving the IRS and U.S. Department of Justice. Drawing on her United States Tax Court clerkship experience, Darianne brings procedural insight, enabling her to assess risks, develop strategy and engage with government agencies. She has experience in supporting the defence of taxpayers in multimillion-dollar income tax deficiency cases involving complex valuation issues. Darianne is known for delivering guidance in matters with significant financial and reputational impact.

Contributions to Global Practice Guides

Tax Controversy Law and Practice in USA – New York

Tax Controversy Trends and Developments in USA – New York

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