O’Farrell

O’Farrell

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Global

Tax

Deals

  • Submitted a claim on behalf of Telefónica de Argentina challenging the constitutionality of prohibiting inflation adjustment provisions to asset depreciation for income tax purposes; the Federal Tax Court sided with the company, establishing that the prohibition is not compatible with the property rights guaranteed by the Constitution.
  • Obtained three favourable decisions from the Social Security Chamber of Appeals on behalf of Transener confirming the social security tax treatment applicable to companies with minority participation of the Federal State as a consequence of the privatisation of the pension regime.
  • Obtained two preliminary injunctions in favour of Telefónica Móviles and AMX preventing the Municipality of La Matanza from imposing a local tax that was deemed unconstitutional.

Team Services

Miguel AM Tesón, leading the area, is a prestigious tax lawyer, former president of the Argentine Fiscal Association. He works alongside Guillermo Lalanne and Maria Celina Valls, with the support of Daniel Calzetta, Eduardo Baistrocchi and Carlos Repetto, as of counsels. The department has a strong expertise in complex tax litigation matters. It completes its practice covering a wide range of local and international tax issues, including international tax planning and transfer pricing.

Our Tax Department has gained a very important reputation among its clients and peer law firms in complex tax litigation, local taxation and transfer pricing.

We also have contacts with major law offices in several countries, which enable us to analyze every transaction from a global perspective. In particular, we have a major alliance with the Spanish firm Estudio Roca Junyent with whom we work on a habitual basis.

Our Tax Law Department has created a work unit specialized in complex tax lawsuits, with particular experience in disputes subsequently appealed to the National Supreme Court of Justice. Said work unit is unique in Argentina in the full-service law office sector.

O´Farrell´s Tax Department has gained a very important reputation among peer law firms because of having taking the initiative in innovative tax controversies and obtaining successful results from the Federal Supreme Court.
Key clients

  • Pampa Energía
  • Naturgy Argentina
  • Droguería del Sud
  • Ford Argentina
  • Importadora y Exportadora de la Patagonia
  • Grupo Telefónica Argentina
  • Biogenesis Bago
  • Transener
  • Sanofi
  • Sacde
  • Pop Argentina
  • Telesistema
  • Adecoagro
  • IPH

Client testimonials

Legal 500 - client testimonial

‘The O’Farrell tax department is made up of professionals with exceptional technical knowledge and the ability to combine this with practical experience. They have knowledge that makes a difference when it comes to proposing a strategy.’

Legal 500 - client testimonial

‘Miguel Teson has unique experience in litigation. Celina Valls is the country’s number one expert in inflation adjustment. Guillermo Lalane is recognized for his technical knowledge and experience. They are top-level professionals.’

Awards and Recognition

ITR Americas Tax Awards 2024

ITR Americas Tax Awards 2024

Argentina Tax Disputes Firm of the Year