Ariane Guimarães > Mattos Filho > Brasilia, Brazil > Lawyer Profile

Mattos Filho
SCS Q. 09 Lote C Bloco B, Sala 1205
Edifício Parque Cidade Corporate
BRASILIA, DF, CEP 70316-109
Brazil

Email firm Visit website 55 61 3218 6000

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55 61 3218 6035 ariane.guimaraes@mattosfilho.com.br View profile View profile

Work Department

Tax

Position

Partner

Career

Ariane focuses her practice on tax litigation, particularly on legal strategies in Brazil’s superior courts. She assists clients with managing the impacts of court decisions on business and represents interests before the executive (Ministry of Economy) and legislative branches (National Treasury Policy Council and National Congress), coordinating the firm’s Government Relations practice. A vice-chairman of the Brazilian Bar Association – Federal District Chapter’s Superior Courts Commission (2022-2024), Ariane is also vice-president of the Legislation Committee of the American Chamber of Commerce (Amcham).

Ariane is a professor of Tax Law at the Centro Universitário de Brasília (UniCEUB), the founder and coordinator of the Group of Studies and Research in Tax Law (GEPAT), as well as the founder of ‘Elas Pedem Vista’, a group that discusses current issues related to women in power. She is also a member of the firm’s Pro Bono Committee.

Languages

English; Portuguese

Memberships

She is the director of the Subcommittee on Tax Reform for the Federal District Section of the Brazilian Bar Association for the 2019-2021 period, and the vice-president of the Legal Committee of the American Chamber of Commerce. Professor of Tax Law at the University Center of Brasilia (UniCEUB), she is the founder and coordinator of the Group of Studies and Research in Tax Law (GEPAT). She is also the founder of Elas Pedem Vista, a group which discusses current topics of women’s action and representation in the legal market.

Education

Bachelor of Law, Centro Universitário de Brasília (UniCEUB)
Masters degree in Tax Law, Centro Universitário de Brasília (UniCEUB)
Doctorate degree in Tax Law, Centro Universitário de Brasília (UniCEUB)
Visiting researcher, Georgetown University (USA)

Lawyer Rankings

Brazil > City focus - Brasilia > Government relations

Benefitting from the firm’s full-service structure, Mattos Filho is equipped to act for a diverse client base, including non-profit organisations and major corporations, in a variety of legislative processes and negotiations with public bodies. In addition to its recent engagement in discussions involving the tax reforms under debate in the National Congress, the team is also frequently instructed in matters concerning tax benefits for charities, income and consumption taxation, and telemedicine regulations. The group is led by Flavio Pereira Lima in São Paulo, who focuses on civil litigation and commercial arbitration, and Ariane Guimarães in Brasília, a tax litigation expert. Associate Alberto Frederico Teixeira Soares Carbonar assists with institutional and government affairs matters.

Brazil > City focus - Brasilia > Tax

(Next Generation Partners)

Ariane Guimarães – Mattos Filho

Mattos Filho‘s Brasília-based tax team is known for its performance in contentious matters, whether in constitutional cases involving the profit participation contribution (PIS) and the social security financing contribution (COFINS), or in administrative proceedings before tax revenue agencies. Household names across a range of industries rely on the team for assistance with high-profile mandates, including as amicus curiae in actions for declarations of unconstitutionality. The ‘immensely respected‘ Ariane Guimarães, a reference for tax litigation before the superior courts, spearheads the practice and is supported by associate Alberto Frederico Teixeira Soares Carbonar, who focuses on tax mandates involving the automotive, energy, financial, technology and telecoms sectors. Associate Leandro Bettini left the firm in January 2023.

Ariane Guimarães > Mattos Filho > Brasilia, Brazil > Lawyer Profile

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