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The rapidly growing team at Moore Tax Law Group is cultivating a reputation as ‘one of the premier tax controversy boutiques in the country’, with demonstrable expertise in criminal tax matters. In addition to representing clients in litigation, the group handles administrative procedures and out of court negotiations with tax authorities. Founding partner Guinevere M. Moore, who is based in Chicago, co-leads the team with Zhanna A. Ziering in New York. Moore is ’an outstanding tax litigator’ with experience in high stakes civil and criminal tax disputes. Ziering is active in both federal and SALT matters and is additionally well-versed in international tax issues and matters relating to the taxation of cryptocurrency. Also working from Chicago are Ajay Gupta, an expert in tax litigation and white collar crime, and Shay-Ann Heiser Singh, whose tax practice is supplemented with a background in bankruptcy and immigration matters. New York lawyer Aaron Esman is a further name to note.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘Guinevere Moore is the undisputed star of the team here. Shah-Ann Heiser Singh also a key component of the team.’

  • ‘The Moore Tax Law Group is one of the premier tax controversy boutiques in the country. It taps into its vast but varied experience in tax matters to deliver exceptional results for clients. Whether the matter involves complex international tax issues, criminal tax issues, or civil tax litigation, this firm has the horses to handle it. ’

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Key clients

  • The Center for Taxpayer Rights
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Work highlights

  • Represented The Center for Taxpayer Rights pro bono as Amicus Curie in Bittner v. United States, 598 U.S. __ (2023), holding in favor of the petitioner.
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