The tax team at Mayer Brown excels in all aspects of tax planning, structuring and transactions, including M&A, partnerships and joint ventures, capital market transactions and both inbound and outbound investments. The group is also recognised for its knowledge of global tax reform, such as the OECD’s base erosion and profit shifting (BEPS) initiative. Lucas Giardelli routinely handles the structuring and execution of business transactions and tax planning matters. Giardelli leads the New York team alongside Jason Bazar and Brian Kittle. Tom Kittle-Kamp is at the helm in Chicago, where federal tax litigation expert Jenny Austin is also a name to note. The Washington DC office is led by Jason Osborn, who specializes in alternative payment arrangements (APAs). Other key members of the team include Kenneth Klein, who is notable for his expertise in shipping taxation as well as the structuring and restructuring of multinational corporations. Gary Wilcox oversees federal tax controversies relating to cross-border transactions, while Sonal Majmudar advises on transfer pricing mandates. Maria Critelli, Tyler Johnson and Brennan Young were all promoted to partner in January 2025.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘They have a sensational team, with lawyers that have specific capabilities for the different kind of issues consulted with them.'
- 'Very responsive and willing to invest time in exploring possibilities and building professional relationships.'
‘Lucas Giardelli is highly recommended, great US Tax Lawyer and Spanish native speaker. He really simplifies tax technical matters for non-US experts. ’
‘Excellent quality.’
‘The team at Mayer Brown is very efficient, they always accommodate clients with any request, question, matter we may have.'
'They are always thinking how to provide a better service even if it is in different jurisdictions.’
‘ It is a great advantage that Lucas Giardelli speaks Spanish and perfect English. He also understands Latin American legislation. ’
‘Jason Osborn is an invaluable advisor to me. His strategic thinking, smart advocacy, and communication and relationship management skills are all top-notch. ’
Key clients
- American Express Company
- Sotheby’s
- Altice USA
- ENGIE
- Canadian Imperial Bank of Commerce (CIBC)
- Abbott Labs
- American Axle & Manufacturing
- Keysight Technologies
- Eaton Corporation
- Nestlé S.A.
- Bank of Montreal
- Société Générale
- National Bank of Canada
- Nippon Life Insurance Company
- Caisse de Depot et Placement du Quebec (CDPQ)
Work highlights
Represented Nippon Life Insurance Company in its $8.2 billion acquisition of Resolution Life Group Holding LP. The transaction values Resolution Life at approximately $10.6 billion.
Advised Nissan in a USD 1.5 billion asset backed securitization facility with JP Morgan secured by a portfolio of auto loans in Mexico.
Represented Janus Henderson Group in an innovative strategic partnership with The Guardian Life Insurance Company of America (Guardian).
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.
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Practice head
Jason Bazar; Brian Kittle; Tom Kittle-Kamp; Jason Osborn; Lucas Giardelli
Other key lawyers
Jenny Austin; Kenneth Klein; Gary Wilcox; Sonal Majmudar; Maria Critelli; Tyler Johnson; Brennan Young