enes +5411 4346-1000

“He has outstanding business acumen and very strong client service.”

Chambers Global Legal Guide 2023

Miguel A.M. Tesón


Tel +5411 4346-1030


Professional Experience

Miguel A.M. Tesón is the Partner in charge of the Tax Law Area. He joined the firm in 1989.

Mr. Tesón specializes in tax law counselling. In addition, he has broad experience in contentious matters as well as in complex litigation before the Argentine Supreme Court, given his extensive experience in the public and private practice.

He worked as an Assistant at the Defender’s Office before the Argentine Supreme Court of Justice and Federal Courts in the City of Buenos Aires, Court Reporter and Secretary-Legal Counsel (Secretario Letrado) of a Judge’s Office (Vocalía), General Secretary of the Argentine Tax Court and General Secretary of ENTel.

His main clients include: Telecommunications (Grupo Telefónica de Argentina), Electricity Generation, Transportation and Distribution (Grupo Pampa); Gas Distribution (Naturgy); Highways (GCO, AECSA); Automotive Industry (Ford); Agribusiness Industry (Cofco); Retail (La Anónima); Drugstore (Droguerías del Sud, Monroe Americana, Asociación de Empresas Medicinales (ADEM)).


He is a lawyer graduated from the Law and Social Sciences School of Universidad de Buenos Aires (1982). In addition, he earned a Master’s Degree in Advanced Studies in Public Administration from Universidad de Alcalá de Henares, Spain, which is officially recognized by the Ministry of Education and Sciences of Spain with academic validity equivalent to a PhD.


He is recognized as an expert in his practice area by the following international publications:

  • Chambers & Partners Latin America 2022: Tax
  • Chambers & Partners Global 2022: Tax
  • The Legal 500 2022: Tax (Hall of Fame)
  • Latin Lawyer 250 2022: Tax
  • LACCA Approved 2022: Tax
  • Leaders League, 2023: Tax (Highly Recommended)

Professional Entities and Associations

  • Member of the Argentine Fiscal Association (Asociación Argentina de Estudios Fiscales). He worked as a counselor, treasurer and secretary, and was appointed President of this prestigious institution for the period 2013-2014.
  • Member of the International Fiscal Association (IFA)
  • Member of the Tax Law Institute of the Argentine Academy of Law and Social Sciences of Buenos Aires (Instituto de Derecho Tributario de la Academia Nacional de Derecho y Ciencias Sociales de Buenos Aires).

Academic Work

Regular Professor of Master’s Degree Course in Tax Law at Universidad Católica Argentina (subject: Provincial and Municipal Taxes) for 10 years; Regular Professor of Post-graduate course on Taxation at the Professional Board of Economic Sciences (subject: Municipal Taxes) and Assistant Professor of Finance and Tax Law at Universidad de Buenos Aires

Books and Articles

He frequently writes articles and essays on tax law matters in specialized journals.

Co-author of the book “Procedimiento Tributario”, published by Editorial Tesis, Bs. As., 1988.