Department profile
Mannrich e Vasconcelos Advogados

Tax Litigation: Highly Regarded

Brazil Guide 2026 : Brazil


Mannrich e Vasconcelos Advogados

Rankings

About

Provided by Mannrich e Vasconcelos Advogados

Our tax litigation practice represents clients with a creative and strategic approach, considering case law, cost-benefit, and extralegal factors such as economic impact data.

In the administrative sphere, our practice is led by Carlos Henrique de Oliveira, former president of the Administrative Council of Tax Appeals (CARF), whose experience encompasses complex topics, including social security disputes, income tax issues, and other intricate matters.

We also maintain a dedicated team in Brasília for representation before the Superior Courts, which includes Nina Pencak, a former clerk at the Supreme Court (STF). In São Paulo, our office is strategically located near the Federal Courts and the Courts of Appeals, enabling our team to engage proactively.

We are dedicated to the development of innovative arguments for our clients. We highlight the exclusion of sales tax from the PIS/Cofins calculation base, a discussion that for a long time was considered inapplicable to ethanol and gasoline companies, but based on public data obtained by our team, we were able to obtain favorable decisions.

Our team also provides advisory services on important public policy projects and tax debt transactions. We have been dedicated to the development of technologies to identify judgment trends and the best arguments to be used in lawsuits. Large companies seek our assistance in these projects, which aim to create a strategic view of tax litigation, mitigating conflicts and reducing costs.

Industries (5)

  • Healthcare
  • Chemical
  • Beverage Industries
  • Agribusiness
  • Payment Systems

Chambers Review

Provided by Chambers

Tax Litigation: Highly Regarded - Brazil

Band 2

Band 2


What the Team is Known For

Mannrich e Vasconcelos Advogados is a respected firm frequently retained by sectorial associations to act as amicus curiae in leading cases judged by the High Courts. It's also regularly called upon by clients in the healthcare sector to represent them in disputes relating to federal and state taxes such as ICMS and PIS/Cofins. The team has additional capabilities in handling disputes involving social security contributions, corporate income tax, goodwill tax amortisation and transfer pricing.

Work Highlights

Provided by Chambers

  • Mannrich e Vasconcelos represented Abrasca as amicus curiae in a leading case concerning the legal nature of Executive Stock Option Plans judged by the Superior Court of Justice.

Strengths

Provided by Chambers

  • Mannrich e Vasconcelos's tax litigation team has been a strategic partner of our company. The firm's accumulated experience in our sector gives it a deep understanding of the regulatory and operational specificities that directly impact our business.

    Tax Litigation: Highly Regarded respondentBrazil
  • I really like Mannrich e Vasconcelos's technical excellence, availability and academic sophistication.

    Tax Litigation: Highly Regarded respondentBrazil
  • A firm always prepared to discuss the topics relevant to us, Mannrich e Vasconcelos also has an accounting acumen, which is essential for a macro-level analysis of our tax litigation issues.

    Tax Litigation: Highly Regarded respondentBrazil
  • Mannrich e Vasconcelos has extensive expertise in tax litigation matters and in-depth knowledge of the most relevant issues currently being judged by the Higher Courts. It offers a strategic perspective of cases and is highly assertive in its guidance.

    Tax Litigation: Highly Regarded respondentBrazil

Notable Practitioners

Provided by Chambers

  • Band 1Breno Ferreira Martins Vasconcelos
    Band 1Breno Ferreira Martins Vasconcelos

    Breno Ferreira Martins Vasconcelos

    Breno Ferreira Martins Vasconcelos enjoys a solid reputation in the market for his tax litigation skills. He advises companies on a range of administrative and judicial disputes, including those before the higher courts.
    • Breno Ferreira Martins Vasconcelos is a true reference in tax law and handles highly complex matters with ease.

      Tax Litigation: Highly Regarded respondentBrazil
    • Beyond his undeniable technical competence, Breno Ferreira Martins Vasconcelos stands out for his collaborative approach and his ability to understand the company’s operations. His work is precise and agile and is always guided by the search for viable and sustainable alternatives.

      Tax Litigation: Highly Regarded respondentBrazil
  • Up and ComingMaria Raphaela Dadona Matthiesen
    Up and ComingMaria Raphaela Dadona Matthiesen

    Maria Raphaela Dadona Matthiesen

    Maria Raphaela Dadona Matthiesen is an up-and-coming partner who draws upon her tax litigation experience to assist clients with cases in which they take part as amicus curiae, as well as with annulment of tax assessments.

    • Maria Raphaela Dadona Matthiesen is always very helpful and is consistently prepared to discuss the matters at hand while remaining open to new points of view.

      Tax Litigation: Highly Regarded respondentBrazil
  • Up and ComingNina Pencak
    Up and ComingNina Pencak

    Nina Pencak

    Nina is an up‑and‑coming practitioner who acts in constitutional and tax litigation before the Supreme Court and the Superior Court of Justice, including cases involving amicus curiae participation and direct actions of unconstitutionality.

    • Nina Pencak is always up to date on the main matters, particularly those involving the Superior Courts, and is consistently clear and instructive in her guidance.

      Tax Litigation: Highly Regarded respondentBrazil
    • With an impeccable strategic view of procedural matters, Nina Pencak consistently assesses all possible risks and suggests precise and effective actions.

      Tax Litigation: Highly Regarded respondentBrazil

Ranked Individuals at Mannrich e Vasconcelos Advogados (3)

Brazil

  • Profile image of Breno Ferreira Martins Vasconcelos

    Breno Ferreira Martins Vasconcelos

    Tax Litigation: Highly Regarded

    View profile
  • Profile image of Maria Raphaela Dadona Matthiesen

    Maria Raphaela Dadona Matthiesen

    Tax Litigation: Highly Regarded

    View profile

Members

Provided by Mannrich e Vasconcelos Advogados

What success is built on

Chambers is the leading data and intelligence partner for the legal sector.

Explore thought leadership