Department profile
O'Neill & Borges LLC

Tax

Latin America Guide 2026 : Puerto Rico


O'Neill & Borges LLC

Rankings

About

Provided by O'Neill & Borges LLC

For over 60 years, O'Neill & Borges LLC is one of the leading tax law firms in Puerto Rico with substantial experience in income tax, tax exemption, sales and use, excise tax, and local taxes such as municipal license tax and property tax issues. It has ample experience in tax planning and structuring for Puerto Rico investments, operations, reorganizations, liquidations, and various other types of transactions, including for controlled foreign corporations (CFCs), among others. It is experienced negotiating tax incentives, tax grants, closing agreements, rulings on complex issues, qualification of pension plans, and in administrative procedures before the Treasury Department, PRIDCO, the Centre for the Collection of Municipal Revenues (CRIM) and municipalities. It provides advice on qualification for free trade zones (FTZ), export services (Act 20), Tax Exemption (Act 60), Qualified Opportunity Zones, among others. It also has extensive experience in litigation of tax issues.

Chambers Review

Provided by Chambers

Tax - Puerto Rico

Band 1

Band 1


What the Team is Known For

O'Neill & Borges is a highly acclaimed powerhouse firm and fields a sizeable team of tax specialists in Puerto Rico. The department is highly active advising clients on the structuring of tax-efficient vehicles for major M&A transactions, negotiating tax incentives and the tax implications of corporate divestments. Its noted bench of strong practitioners has in-depth experience representing clients in administrative proceedings, including tax audits and ruling requests. The firm boasts an impressive roster of key clients from the finance and energy industries.

Work Highlights

Provided by Chambers

  • O'Neill & Borges team advised Thesis Capital on the tax aspects of the asset purchase agreement by which the client purchased all the assets of Cadillac Uniforms and Services.

Strengths

Provided by Chambers

  • With O'Neill & Borges we feel like we are represented by one of the best law firms in Puerto Rico. We find the lawyers to be reasonable, adjusting when necessary and the results are excellent.

    Tax respondentLatin America
  • O'Neill & Borges is a top-notch team. I am very pleased and confident in its work and its reputation in the market is well-earned.

    Tax respondentLatin America

Notable Practitioners

Provided by Chambers

  • Band 1Amaya Iraolagoitia
    Band 1Amaya Iraolagoitia

    Amaya Iraolagoitia

    San-Juan based practitioner Amaya Iraolagoitia continues to elicit significant praise from market observers for her specialised tax practice. She frequently represents clients in contentious matters involving income, municipal licences and property taxes.

    • Amaya Iraolagoitia is an excellent professional and has extensive knowledge and experience.

      Tax respondentLatin America
    • Amaya Iraolagoitia manages our issues in a super efficient and conscientious way.

      Tax respondentLatin America
  • Band 3Denisse Ortiz
    Band 3Denisse Ortiz

    Denisse Ortiz

    Partner Denisse Ortiz continues to garner praise from clients for her experience in handling tax matters in Puerto Rico. She regularly assists with the tax structuring of corporate and financial transactions.

    • Denisse Ortiz works with us directly and advises on all of our tax matters. She is my go-to person.

      Tax respondentLatin America
  • Band 3Rosa González-Lugo
    Band 3Rosa González-Lugo

    Rosa González-Lugo

    Respected partner Rosa González-Lugo is highly experienced in assisting clients with the tax structuring of transactions as well as tax exemptions.
    • Rosa González-Lugo has an incredible amount of experience in tax.

      Tax respondentLatin America

Ranked Individuals at O'Neill & Borges LLC (3)

Puerto Rico

Members

Provided by O'Neill & Borges LLC

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