Crespo Gregio Advogados

Crespo Gregio Guerrero Advogados is a Brazilian boutique law firm specialized in tax law, founded by Fernando Crespo P. Viña and Fabio Gregio Barbosa, both with over 20 years of experience and prior practice at leading law firms in Brazil.

The firm was established with the purpose of delivering tax solutions of the highest technical standard, aligned with clients’ strategic needs and the complexities of the Brazilian tax system.

In 2025, the partnership was expanded with the admission of Reinaldo Guerrero, a former tax auditor with solid experience in tax audits, tax assessments, compliance reviews, and tax planning, strengthening the firm’s advisory and litigation capabilities.

Structure and Approach

The firm has a lean and highly integrated team of six professionals. All work is handled directly by the partners, ensuring a high level of technical involvement, consistency in service delivery, and alignment with clients’ objectives.

This structure allows for agile decision-making without compromising the depth of technical analysis required by the matters handled.

Practice Areas

Tax Advisory

The firm provides tax advisory services at the federal, state, and municipal levels, including tax structuring and planning, transaction support, analysis of tax incentives and special regimes, compliance, risk management, and tax credit recovery.

Its practice is guided by a proactive approach, with continuous monitoring of relevant legislative and case law developments.

Tax Litigation

Crespo Gregio Guerrero Advogados represents clients in judicial and administrative proceedings at all levels. Its work includes high-value and complex tax assessments, annulment actions, refund claims, and constitutional matters, always focusing on legal certainty and effective results.

Technology and Innovation

The firm continuously invests in technology applied to legal practice, including case management systems, legislative monitoring platforms, and tools supporting decision-making and clients’ accounting routines.

Additionally, it develops proprietary automation solutions aimed at enhancing operational efficiency. In 2025, the firm was awarded the Gold Prize (1st place) by Análise DNA and Fenalaw in the Technology category for the project Digital Transformation in the Management of Tax Clearance Certificates.

Industry Sectors

The firm has a well-established presence in strategic sectors of the Brazilian economy, including energy (transmission and renewable sources), agribusiness, food and beverages, retail and consumer goods, apparel and footwear, mining, and logistics.

This sector experience enables the development of tax solutions tailored to the regulatory and operational specificities of each industry.

Geographic Reach and Institutional Relations

With nationwide operations, the firm advises clients with activities across multiple state jurisdictions and a high degree of regulatory complexity.

It maintains structured and technical dialogue with tax authorities at different levels, supported by the practical experience of a former tax auditor among its partners.

Clients

The firm advises prominent national and multinational companies, including ISA Energia Brasil S.A., Elera Renováveis S.A., Comerc Energia, Nike, Centauro (SBF Comércio de Produtos Esportivos), Atvos Agroindustrial, Wickbold & Nosso Pão Indústrias Alimentícias, General Mills Brasil, Eternit S.A., and Interligação Elétrica do Madeira.

Recognition

The firm has received important recognitions, including Most Admired Law Firm and Most Admired Lawyer in the Análise Editorial and Análise Regional rankings, as well as recognition by ITR World Tax. More recently, it was awarded the Client Satisfaction Award by The Legal 500, based on client feedback highlighting the team’s technical quality, industry knowledge, and efficiency in fee management.

Pro Bono

Aware of its social role, the firm encourages and promotes voluntary work, providing legal assistance to social institutions and underprivileged individuals.

Subject to prior assessment, pro bono services are offered across various areas of law, free of charge.