The powerhouse team at McConnell Valdés LLC remains a marker leader, advising domestic corporates, household-name financial institutions (such as UBS) and global brands (including Google, Coca-Cola, Shell and Hewlett Packard) on a diverse spectrum of tax matters. With a client base spanning sectors ranging from chemicals, tech and pharmaceuticals to retail, beverages, telecoms and energy, the practice’s comprehensive service covers tax incentives and exemptions, consumption tax, advice for non-profit organisations on the structuring and establishing of operations in Puerto Rico, tax litigation and the tax aspects of M&A and deal structuring. The practice is headed by tax practice chair Isis Carballo-Irigoyen, who assists with start-up operations, reorganisations, acquisitions, financings and competent authority proceedings before the Puerto Rico Department of Treasury and the Internal Revenue Service, and vice-chair Yamary González-Berríos, who specialises in corporate and partnership tax. Other key figures include Rubén Méndez-Benabe, who represents clients in tax controversy and litigation matters, including tax audits and examinations, administrative appeals and court proceedings, and Lillian Toro-Mojica, who advises on employee benefits, and income and property taxes.

Legal 500 Editorial commentary

Testimonials

Collated independently by Legal 500 research team.

  • ‘The group's technical knowledge, expertise, key contacts and industry experience make it an amazing tax consulting resource.’

  • ‘Isis Carballo is the best tax resource I have known in my career of 40+ years.’

Key clients

  • Lutron
  • Sunnova Energy Corporation
  • Fresenius
  • CooperVision Caribbean
  • Celanese
  • Amgen
  • Shell
  • Abbott Ingersoll Rand
  • PPG Industries
  • The Coca-Cola Company
  • Google
  • T-Mobile
  • Sears/Kmart
  • UBS
  • Hewlett Packard

Work highlights

  • Providing Sunnova Energy with regular advice on the structuring of its Puerto Rico operations and with the application of Puerto Rico tax incentives for its renewable energy operations.
  • Structuring Shell's Puerto Rico business in an excise tax-efficient manner, taking advantage of the benefits of operating in a foreign trade zone and under the provisions of a tax incentives grant.
  • Providing tax advice to Turkish company Enka, related to the design, procurement and construction of the San Juan Bay Piers under the terms of a public-private partnership with the Puerto Rico Ports Authority.

Lawyers

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Practice head

The lawyer(s) leading their teams.

Isis Carballo-Irigoyen, Yamary González-Berríos