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This content is provided by Mariz De Oliveira e Siqueira Campos Advogados.

Founding Partners: Ricardo Mariz de Oliveira, Roberto de Siqueira Campos

Senior Partners: João Francisco Bianco, Elidie Palma Bifano

Partners: Sandra Mara Rossetti de Paula, Bruno Fajersztajn, Fabiana Carsoni Alves Fernandes da Silva, Ramon Tomazela Santos, Silvio José Gazzaneo Junior, Marcos Engel Vieira Barbosa

Number of other lawyers: 21

Firm Overview:  

Mariz de Oliveira e Siqueira Campos Advogados is one of the most traditional law firms in Brazil, with 40 years of commitment to excellence in the rendering of legal services. Its partners are experienced lawyers dedicated to the orientation of complex issues involving tax matters. The team is constantly being invited to lecture in universities and congresses all over the country. The team has an important academic activity as authors of various books and articles on taxation and as directors of the Brazilian Institute of Tax Law, where they coordinate courses on taxation. Lawyers also publish loose-leaf guides on corporate income tax and on the Brazilian value added tax that are largely used by practitioners. Main Areas of Practice:


The firm renders services concerning tax issues in general, from consultation to litigation, defending its clients’ interests before judicial and administrative courts. Its partners are frequently consulted about tax planning structures, reorganisation of assets, M&A tax consequences and application of tax treaties involving inbound and outbound investments.

Languages: Portuguese, English, Italian. 


Mainly large national and multinational companies of different sectors, such as banking, construction, mining, commodities, airlines, etc.