Our Team

Humberto Marini
“Organizational culture is key in any society because it reflects the complex of values, principles and behaviors that define the way in which business is conducted. Here we value respect, ethics, meritocracy, diversity, appreciation and client satisfaction, among other things. Those are CMA principles with which I fully identify and in which I fully believe.”

Humberto Marini


Legal Practice Areas


Rio Janeiro

T +55 21 2217 2011

Humberto is a partner in Campos Mello Advogados in cooperation with DLA Piper of the Tax practice, based in Rio de Janeiro.


He has an extensive practice in tax consulting and tax litigation, experienced in the Judicial and Administrative Courts. His work includes responsibility for many substantial cases in state and federal courts, including the Higher Courts in Brazil: Brazilian Taxpayers Council, Superior Tribunal of Justice and Federal Supreme Court.


Humberto also has significant experience in VAT/indirect and direct tax matters, as well as in state and municipal taxes, social security, M&A, customs duties and excise taxes. Represented major companies in tax lawsuits, administrative procedures and consultations at the government tax departments in Brazil.


Among his clients are Brazilian and international companies in industry sectors, such as consumer goods, energy, infrastructure, financial and banking services, mining, hospitality and leisure, retail, industrial goods and services, life sciences and real estate.


He has been assisting Oil & Gas clients for more than 15 years in the tax litigation, representing companies in tax assessments and lawsuits regarding issues related to the industry.


Humberto began his career in 1998, as a member of the Tax department of Trench, Rossi and Watanabe. In 2005, he joined the Tax team of Veirano Advogados, which he left in 2010 to join Campos Mello Advogados to coordinate the Tax Litigation team.


• Recommended Lawyer in Tax
The Legal 500: 2016, 2017 and 2018

• One of the most admired Brazilian lawyers in Tax
Análise Advocacia 500: 2014, 2015 and 2016


• Chambers Brazil 2022
Recommended Lawyer in Tax


Professional Memberships
• Brazilian Bar Association (OAB), Rio de Janeiro and São Paulo Chapters


• Specialization in Tax, Fundação Getulio Vargas (FGV), 2003
• B.A. in Law, Pontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), 2001


• Portuguese
• English
• Italian