Holland & Knight advises on federal, state, and international tax matters, spanning structuring and compliance through to audits, administrative proceedings, and litigation. The team regularly represents clients in complex tax controversies and appellate disputes. The practice is jointly led by Dallas-based Mary McNulty, who handles tax issues arising in bankruptcy proceedings; and William Sharp, who advises on domestic and cross-border tax mandates from the firm’s Atlanta, Tampa, and San Francisco offices. Also in Dallas, Lee Meyercord represents clients in federal tax controversies, including IRS audits and administrative appeals. Christopher Rizek focuses on civil and criminal tax disputes, while Joshua David Odintz advises on tax policy, controversy, and planning matters.
Legal 500 Editorial commentary
Accolades
Client satisfaction: Billing & efficiency
Client satisfaction: Sector knowledge
Testimonials
Collated independently by Legal 500 research team.
- ‘On a complex and contentious matter, the team demonstrated real resourcefulness and creativity. They do not approach issues in a purely technical or siloed manner; instead, they reframe problems effectively, identify leverage points early, and develop practical, outcome-focused strategies.’
- ‘The practice stands out for its collaborative and flexible approach, working seamlessly with other advisers on related matters across multiple jurisdictions.’
- ‘The individuals I have worked with stand out for their judgment, intellectual rigour, and ability to operate in high-stakes tax controversies. They are deeply engaged in the substance while remaining pragmatic and solutions-oriented.’
- ‘David Scott Sloan provides thoughtful senior leadership, particularly in framing issues, deploying the right resources at the right time, and maintaining a disciplined overall strategy.’
- ‘Patrick Duffey is exceptionally sharp and resourceful, quickly mastering complex facts and driving matters forward with organisation and efficiency.’
- ‘Abbey Garber brings deep tax litigation expertise and a strong grasp of procedural strategy, adding meaningful value through practical insight and responsiveness.’
Key clients
- Exxon Mobil Corporation
- Sirius Solutions
Work highlights
Representing ExxonMobil Corporation in a multimillion-dollar federal income tax case involving significant partnership, production payment and penalty issues.
Representing Sirius Solutions in a case of first impression that addresses whether the Internal Revenue Code excludes the distributive shares of “limited partners” from self-employment tax.|
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Practice head
Mary McNulty; William Sharp
Other key lawyers
Lee Meyercord; Christopher Rizek; Joshua David Odintz; Patrick Duffey; Abbey Garber; David Scott Sloan;