A market leading firm in the tax arena, Marval O’Farrell Mairal handles the full spectrum of tax matters and is praised by its clients for its “excellent quality of service and in-depth knowledge of highly complex tax matters.” Representing blue-chip domestic and international clients, in non-contentious tax matters, high profile litigation, and advising on sophisticated tax structures. The practice adopts a multidisciplinary approach by collaborating with their corporate and finance departments to assist them on cases related to M&A transactions and they act for clients in various industries such as private equity, agribusiness, energy and natural resources. The department is co-led by six experienced partners. María Inés Brandt has extensive experience advising on international transactions and complex tax planning; Walter Keiniger specialises in complex and sensitive tax litigation including tax criminal cases; Fernando Vaquero focuses on corporate tax matters including M&A, restructuring and real estate projects; Sergio Vergara has expertise in social security and transfer pricing disputes; while recently promoted partner Luciana Virgile specialises in tax advice for corporate clients in the banking and automotive sectors. Associate María Paula Castelli has a particular focus on wealth planning for high-net-worth individuals.
Legal 500 Editorial commentary
Accolades
Client satisfaction
Testimonials
Collated independently by Legal 500 research team.
- ‘The team has an outstanding track record in the tax field, demonstrating a solid ability to address complex issues, design and implement innovative tax strategies, and provide accurate advice on controversial matters.'
- 'Compared to other providers, the Marval team stands out for its excellent quality of service and its in-depth knowledge of highly complex tax matters.'
- ‘Marval attorneys Walter Keiniger and Sergio Vergara stand out for their outstanding combination of technical tax expertise, a comprehensive strategic approach, and a firm commitment to excellence in client service.'
- ‘Marval assisted us with a highly complex and sensitive matter quickly and assertively. The process was very organized, and the technical support gave us peace of mind regarding the decision-making process.'
- ‘Maria Inês Brandt is a genius. In addition to resolving tax issues with agility and expertise, when we encounter questions outside her field of expertise, she promptly connects us with specialized professionals, and we have the issue resolved.'
Key clients
- Mondelēz Argentina
- BHP
- Stellantis Group
- Meta Platforms (Facebook /Edge)
- Banco Santander Río
- Tata Consulting Services
- Toyota Argentina
- Vitol Group
- Air Drilling
- Marcopolo
- Skeelo
Work highlights
Advising Air Drilling Associates (ADA) from a tax perspective in the sale of its operations in Argentina to DLS Archer, another player in the energy sector which provides drilling services.
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.
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Sergio Vergara
Luciana Virgile
Leading associates
Leading associates with regular involvement in their team's key work, and recognition from peers or clients as being ones to watch.
Maria Paula Castelli
Practice head
María Inés Brandt; Gabriel Gotlib; Walter C. Keiniger; Fernando M. Vaquero; Sergio D. Vergara; Luciana M. Virgile
Other key lawyers
María Paula Castelli