Sebastian Lopez Sanson > Salaberren & Lopez Sanson (SyLS) > Buenos Aires, Argentina > Lawyer Profile

Salaberren & Lopez Sanson (SyLS)
Sebastian Lopez Sanson photo

Work Department

Tax; Head of Tax Practice. Tax planning re foreign investments, M&A, corporate financing, reorganisations, digital economy, transfer pricing, high networth individuals asset holdings. Regional (LATAM) tax practice. Tax litigation.


Co-Founding Partner – Head of Technology Ventures and Taxation.

Sebastián is a leading tech business lawyer and advisor, He has extensive experience representing global tech/blockchain companies, VC funds, investors doing business in LatAm and globally, and ultra-high net-worth individuals. His expertise includes planning the legal and tax aspects of global business/tech/blockchain operations, cross-border transactions, corporate reorganizations, and family trusts. He has particular interest in adding value in unchartered waters, where situations demand experience, temperance, common sense, and a diverse mental models toolkit.


Salaberren & López Sansón (Co-Founder 2009 to present); Estudio O’Farrell (Tax Partner – International Tax Practice 2007-09; Associate 1998-2007).


English; Spanish


Buenos Aires Bar Association; Asociacion Argentina de Estudios Fiscales; International Bar Association, International Fiscal Associations, Harvard Alumni Association.


Law Degree – Universidad de Buenos Aires (1997); Harvard Law School – International Tax Program (2001-02). Masters in Taxation, Universidad de Buenos Aires (2001). Speaker at conferences on international tax matters. Former Lecturer at Universidad Torcuato Di Tella.

Lawyer Rankings

Argentina > Fintech

(Leading Individuals)

Sebastián López Sanson  – Salaberren & Lopez Sanson (SyLS)

Salaberren & Lopez Sanson (SyLS) is recognised for its deep expertise assisting centralised and decentralised blockchain companies with integration across different verticals in the finance ecosystem. The team’s client roster includes leading blockchain-based metaverse companies, smart contract audit firms and a number of cryptoasset exchanges, who turn to the team for strategic advice on regulatory-compliant and tax efficient business structures. The team is co-led by founding partner Sebastián López Sanson, who is widely acknowledged as one of Argentina’s foremost technology lawyers; and partner Juan Manuel Campos Alvarez, an expert in blockchain-related matters.

Argentina > Tax

(Leading individuals)

Sebastián López SansonSalaberren & Lopez Sanson (SyLS)

Corporate and tax boutique Salaberren & Lopez Sanson (SyLS) keeps a low profile but advises an impressive list of domestic and international clients. The team is well-regarded for its experience handling the tax-aspects of transactional matters. Tax litigation matters are  also undertaken. Respected department head Sebastián López Sanson specialises in tax planning work and has thriving technology practice. Highly-rated tax litigation lawyer Ruben Atim leads on tax disputes. Moreover, the firm announced the opening of an office in Montevideo, Uruguay, in conjunction with well-known local practitioner (and former Posadas, Posadas & Vecino partner), Eduardo Ferrari, with effect from June 2023.