About | Claudio Augusto Vaz Law

Profile

With more than 25 years dedicated to developing legal solutions, the firm has built consolidated expertise in Tax and Financial Law, Tax Credit Recovery, Corporate Law, Insurance, Public Procurement, Compliance, Tax Governance, Business Contracts, and Regulatory Law for highly supervised industries.

The practice is distinguished by its ability to integrate legal rigor with financial and accounting insight, ensuring precise analyses aligned with the economic dynamics of organizations. With an institutional approach oriented toward legal certainty, it is well equipped to operate in complex scenarios in support of high-relevance strategic decisions.

Backed by continuously updated training, combined with experience in highly complex administrative and judicial litigation, risk management, corporate transactions, contracts and public procurement, the practice sustains a body of work marked by analytical depth, technical responsibility, and the qualified handling of sensitive, high-impact matters.

Professional Background

2008 — 2026

Sompo Seguros S.A. (formerly Marítima Seguros) — Legal Specialist

Administrative and judicial tax litigation, including defenses and appeals before CARF and federal courts.
Strategic tax consulting to the tax, accounting, finance, compliance and audit departments.
Coordination of the internal legal team and interface with outside counsel.
Consulting and litigation in administrative public procurement proceedings.
Technical handling of tax proceedings before the Federal Revenue Service, State and Municipal Treasury Departments and SUSEP.
Tax governance: mapping of tax liabilities and provisioning criteria.
Tax compliance and anti-money laundering, liaising with COAF.

1998 — 2008

Loeser e Portela Advogados (now Loeser e Haddad) — Senior Tax Attorney

Administrative (CARF, TIT) and judicial (Federal Courts, STJ and STF) tax litigation on IRPJ, CSLL, PIS/COFINS, ISS, ICMS and payroll tax matters.
Tax consulting and legal (tax) due diligence in M&A transactions and corporate restructurings.
Tax planning and recovery of federal and state tax credits.

Academic Background

IBMEC-SP

Certificate in Tax Reform on Consumption (2026, in progress)

PUC-PR

Specialization in Corporate Law and Business Contracts (2024)

FIA-USP

MBA in Insurance Management (2013)

INSPER

LLM in Tax Law (2008)

FMU

Bachelor of Laws (2001)

Other Information

Vice-President of the Legal Committee of the Japanese Chamber of Commerce and Industry of Brazil (2023–2026).

Advanced English, with proficiency in reading international contracts and legal documents.