Nathalia de Andrade Medeiros Tavares - SiqueiraCastro
Nathalia de Andrade Medeiros Tavares
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04 May Nathalia de Andrade Medeiros Tavares

Posted at 10:26h in Partners by

Nathalia de Andrade Medeiros Tavares

Partner

Rua Tabapuã, 81 – 4º floor
04533-010 São Paulo – SP

Phone:
+55 21 98211-2425

E-mail:
ntavares@siqueiracastro.com.br

  • Tax Law
  • Customs Law
  • Disputes and Litigation
  • Tax Planning
  • Family Offices
  • Registered with the Brazilian Bar Association, OAB
Nathalia de Andrade Medeiros Tavares has more than fifteen years of experience advising clients on tax, customs, and strategic regulatory matters, both in advisory and contentious spheres, serving clients from several segments of the economy, including financial institutions, the energy industry, pension funds, the medical and electronic equipment industry, the food industry, the pharmaceutical industry, medical and hospital services, healthcare assistance services, and others.

Throughout her professional trajectory, she has accumulated relevant institutional experience, providing advisory services before the Brazilian Administrative Council of Tax Appeals, CARF, having also participated in the analysis and formation of precedents that contributed to the consolidation of case law before higher courts.

In parallel with her professional practice, she carries out academic activities and is the author of books, articles, and publications in the areas of Tax Law, Customs Law, and Financial Law, in addition to having acted as a lecturer in accounting and law courses focused on tax and financial legislation.

  • PhD in Public Finance, Taxation, and Development from the State University of Rio de Janeiro, UERJ, 2026.
  • Master in Social Sciences, MSc, from the London School of Economics and Political Science, LSE, 2019.
  • Master’s Degree in Public Finance, Taxation, and Development from the State University of Rio de Janeiro, UERJ, 2017.
  • Bachelor of Laws from the Federal University of Rio de Janeiro, UFRJ, 2013.
The European Union Anti Tax Avoidance Package. In: GOMES, Edgar Santos; MOREIRA, Francisco Lisboa; GOMES, Marcus Lívio (Coords.). Topics on International Taxation: Base Erosion and Profit Shifting. Rio de Janeiro: Gramma, 2018.

Literature Review: Digital Services Tax, DST, and the perspectives under Brazilian Law. Kluwer Law Online, INTERTAX · Aug 1, 2020.

The Perspective of the Brazilian Administrative Council of Tax Appeals on the Concept of Inputs for the Purposes of Determining PIS and COFINS Tax Credits. Coauthorship. In: BORGES, Eduardo (Coord.). PIS and COFINS: Appropriation of Credits, Concept of Inputs. São Paulo: Quartier Latin, 2014.

Literature Review: Tarcísio Diniz Magalhães, Critical Theory of International Tax Law, Teoria Crítica do Direito Tributário Internacional, Letramento, 2000. Kluwer Law Online, INTERTAX, Dec 1, 2020.

Algorithms, Machine Learning, and the Promotion of Codified and Equitable Justice: Advantages x Biases. In: FUX, Luiz; ÁVILA, Henrique; CABRAL, Trícia Navarro Xavier (Coords.). Technology and Multiport Justice. Rio de Janeiro: Editora Foco, 2021.

The Principle of Social Solidarity: The Foundation for Life in Society. In: ABRAHAM, Marcus; PEREIRA, Vítor Pimentel (Coords.). Principles of Public Law: Emphasis on Financial and Tax Law. Rio de Janeiro: Editora Fórum, 2018.

The Crisis of Social Solidarity and the Minimum and Maximum Limits of Social Inequalities: Respect for the Minimum Existential Standard and the Balancing with the Non Confiscation Principle. In: PIRES, Adilson Rodrigues; VIEIRA, Carlos Renato; BACHA, Rafael Duailibe (Orgs.). Public Policies and Taxation. Rio de Janeiro: GZ Editora, 2018.

Bolsa Família and Its Objective of Eradicating Poverty and Reducing Social Inequalities in Compliance with Human Dignity. In: BARCELLOS, Ana Paula de; PETEIRA, Jane Reis Gonçalves; BAPTISTA, Patrícia Ferreira (Orgs.). Contemporary Public Law, Monitoring of Public Policies. Rio de Janeiro: Lumen Juris, 2020.

The Proportions of Fiscal Individualism of Individuals in Tax Wars among Federative Entities: The Distancing from Social Solidarity and Distributive Justice. In: CAMPOS, Carlos Alexandre de Azevedo; IBRAHIM, Fábio Zambitte; OLIVEIRA, Gustavo da Gama Vital (Coords.). Studies on Federalism and Tax War. Rio de Janeiro: Gramma, 2017, v. 1.

Patrimonial Social Inequalities: How Can Taxation Reduce Them? Rio de Janeiro: Lumen Juris, 2017.