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We are a Business Law Boutique, acting independently and yet close to the client, ready to meet the business objectives and create tailored solutions.

Our team consists of lawyers with experience in Brazilian and foreign financial institutions, offering security and efficiency in the legal advice we provide to our clients in Brazil and abroad.

For us, building long-term partnerships is fundamental and, for this reason, we encourage empathy in our daily performance, mutual trust and commitment between the parties.

O Fonseca Marques Advogados (FMA) foi fundado em 2019 por Taciana Fonseca Marques na sua volta ao mercado nacional, depois de uma carreira internacional em que atuou como Senior Counsel /  Head do Jurídico no International Finance Corporation – IFC/ Banco Mundial, nas Américas e na África.

Ao longo destes anos, o FMA tem sido reconhecido pela atuação assertiva e sempre muito próxima ao negócio do cliente, com extrema dedicação de um time comprometido e capaz de navegar nos assuntos mais complexos, falando a língua do cliente, mas sem esquecer da linguagem da lei.

Recentemente fomos destaque no Análise Advocacia 500, um relevante guia jurídico, como as mulheres mais admiradas na advocacia brasileira, e premiados como escritório independente mais admirado pelos clientes.

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Corporate; Mergers
and Acquisitions (M&A)

The work we perform for our clients is based on the best use of the corporate legislation, as well as of the rules applicable to public and private companies, supported by the extensive experience of our team.


We advise clients in structuring and transactions related to the full range of investment funds, from the simples to most complex.

Financial, Debt Reestructuring

We work in corporate and structured financing, assisting in the reviewing, preparation and analysis of financial contracts, from the conception to the full operation of the projects.


We act as trusted advisors to Family Offices in the most varied decision making regarding wealth management, with a view to mitigating risks and perpetuating their assets.


We assist Brazilian and foreign clients in developing joint business in all aspects of corporate and financial transactions.


We assist our clients in developing policies and procedures that enable them to conduct their business in an ethical manner and in accordance with the best market practices.


We operate in the VC market by assisting investors, funds and managers in the negotiating of contracts and the day-to-day management of the investments.

Commercial Contracts
and Negotiations

We assist in the preparation and revision of commercial contracts and keeping abreast of the negotiations, in English and Portuguese, with full support.


We advise Brazilian and foreign companies in the development of their renewable energy projects, focusing on acquisition and financing.


We assist our clients in their tax planning and analysis, as well as in corporate reorganizations involving the most diverse domestic and international operations.


+55 (11) 2649.3203

Rua Haddock Lobo, 1307 – cj. 161
São Paulo – SP – 01414-003 – Brazil

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