Gaston Soler is an associate in Latham & Watkins' Tax Controversy Practice in the firm's Washington, D.C. office.

Mr. Soler represents taxpayers in all stages of federal tax controversies, including exam, appeals, and litigation in the US Tax Court and the US Court of Federal Claims. He also advises clients on tax compliance matters, tax investigations, and the interpretation of tax regulations.

Mr. Soler has experience across a wide variety of industries, and has represented clients in the medical device, software, oil and gas, financial institution, natural resources, and non-profit spaces. Mr. Soler began his career as a transactional tax attorney, advising clients on domestic and cross-border mergers and acquisitions, reorganizations, restructurings, public offerings of debt and equity securities, secondary transactions, and financing transactions. He also has considerable experience advising investment funds on structuring, formation, and operation. Mr. Soler leverages his experience in structuring and negotiating transactions to effectively represent clients in high-stakes tax matters involving economic substance, debt-equity, valuation, employment tax, and penalty issues.

Mr. Soler earned his JD from Duke University School of Law. Before his legal career, Mr. Soler was an associate in the assurance practice of an international accounting firm.

Mr. Soler's experience includes advising:

  • Riverstone in connection with Enviva Holdings recapitalization
  • Penfund on US$1.15 billion fund formation
  • Erick Thohir and Trinugraha Thohir Sports in sale of D.C. United
  • Avendra in US$1.35 billion acquisition by Aramark
  • ECi Software Solutions and The Carlyle Group in acquisition of ECi by funds advised by Apax Partners

Bar Qualification

  • District of Columbia
  • New York


  • JD, Duke University School of Law, 2016
    cum laude
  • BA, University of Maryland, College Park, 2010
  • BS, University of Maryland, College Park, 2010

Languages Spoken

  • English
  • Spanish


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December 8, 2023 Recognition

Litigators of the Week Runners-Up and Shout Outs

Latham Tax Controversy team recognized for a Court of Federal Claims win on behalf of Citigroup Inc. in a dispute rooted in the savings and loan crisis of the 1980s.