Moore Tax Law Group
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Moore Tax Law Group represents companies and individual clients in disputes involving corporate and partnership tax issues, foreign tax compliance, and audit and penalty matters affecting high-net-worth individuals. The Chicago-based practice is led by Guinevere Moore, who advises private clients in tax controversy matters. Lauren Darwit handles criminal tax cases, including matters involving charitable contribution issues. Kathy Enstrom focuses on investigation-related matters. Zhanna Ziering and Aaron Esman left to establish Ziering & Esman PLLC in January 2025, and Maha Sadek joined from the IRS in May 2025.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- Guinevere Moore secured one of the most high-profile criminal tax acquittals in recent years, with the two co-defendants found not guilty. She is an exceptional trial lawyer. Guinevere Moore works alongside very capable colleagues, including Shah-Ann Heiser Singh and Ajay Gupta, though she brings a distinctive level of energy and innovation to her matters. The firm is outstanding in tax controversy matters, combining deep technical expertise with strong strategic judgment. The team is highly experienced in complex IRS examinations, appeals, and litigation, including disputes involving significant financial and reputational risk. They excel at developing practical, well-reasoned strategies and presenting arguments that carry credibility with tax authorities. The lawyers are responsive, detail-oriented, and commercially minded, with a clear focus on client objectives. Guinevere Moore stands out for her technical command of tax law, strategic judgment, and effectiveness in complex IRS disputes. Clients rely on her for clear guidance and disciplined advocacy in high-stakes matters. They approach each case strategically and creatively, always focused on advancing the client’s position toward the best possible outcome. The team is tireless and highly astute.
Work highlights
Represented Clayton Weibel in a federal criminal trial concerning a syndicated conservation easement. Following a ten-week jury trial involving more than 40 witnesses, including federal agents and cooperators, the jury returned a full acquittal. The matter was the first syndicated conservation easement case to proceed to trial.