Ariane Costa Guimarães
Mattos FilhoSince the establishment of the government relations department in 2023, Mattos Filho has been engaged in National Congress discussions regarding the tax reform and the taxation of investment funds and offshores, in which the team contributes legislative recommendations and defends company interests. With multidisciplinary expertise in environmental law, ESG, capital markets, legislative procedures, and tax law, among others, the practice is capable of attending to clients from various industry sectors including agribusiness, biotechnology, energy, finance, and non-profit institutions. Practice head Ariane Costa Guimarães is a specialist in tax law and government relations, and is noted for advising businesses on court decisions as well as representing their interests before the executive and legislative branches of the government. Another vital member of the team is Alberto Frederico Teixeira Soares Carbonar who has deep experience representing clients in institutional and government affairs matters such as crisis management, international businesses, and tax policy.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
‘No firm has such a well-prepared team, not only technically but also with experience in the sector like Mattos Filho.’
‘The members, in addition to personalised and differentiated treatment, know very well how organisations operate and are always one step ahead of legislative changes which gives us confidence and security in our performance.’
‘Ariane Costa Guimarães is notable for her strength in performance and technical knowledge of the tax area. She is always attentive and one step ahead of what mobilises the National Congress in Brasília.’
‘The team has the ability to analyse and understand the client's needs. What differentiates the practice is its attention to detail, availability, quality of service, and a technical capacity that sees the present without ignoring the past and future impacts.’
‘What distinguishes Alberto Frederico Teixeira Soares Carbonar beyond his professional training, is his ethics, his culture, and ability to unite ideas and generate consensus, even under pressure.’
Key clients
- Ternium Brasil
- IDV
- Associação Paulista de Fundações
- Instituto GEOC
- Associação Brasileira de Biotecnologia
- Samsung Eletrônica da Amazônia
- ABRADEE
- ANAV
- Grupo Boticário
- Localiza Rent a Car
Work highlights
- Defending the interests of several relevant economic sectors, such as retail, electricity, steel production, non-profit organizations, and biotechnology, among others, in relation to the tax reform in Brazil before the National Congress.
- Prepared a bill project and legislative amendments that can be presented in the National Congress to defend Samsung's interests regarding the taxation of its profits by South Korea due to Pillar Two implementation.
Lawyers
Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Practice head
The lawyer(s) leading their teams.
Ariane Costa Guimarães