A deep and diverse practice focused on maximizing tax efficiencies and minimizing tax risks for clients nationally and internationally.

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Recent M&A Transactions: 2021



  • Mergers and Acquisitions and Corporate Transactions

    • Advised a special committee of the board of directors of Hilton Worldwide Holdings with respect to the implications on its tax free spin-off of Hilton Grand Vacations and Park Hotels and Resorts of the sale by affiliates of Blackstone to HNA Group, a Chinese conglomerate, of an approximately 25% equity interest in Hilton, and the subsequent sale by HNA of such stock.
    • Represented numerous buyers, including Analog Devices Inc., Danaher Corporation and Fortive Corporation, in connection with several acquisitions, providing tax advice regarding the acquisitions, debt financings related thereto, and post-restructuring planning related thereto.
    • Represented Sonus Networks, Inc. in its tax-free combination with Genband Holdings Company.
    • Represented numerous companies in connection with their sale, including Staples in its sale to Sycamore for approximately $6.9 billion and Regal Entertainment in its sale to Cineworld for $3.6 billion.
    • Advised Memorial Sloan Kettering Cancer Center, The Rockefeller University and Weill Cornell Medicine with respect to the tax-efficient structuring of a collaboration among such entities, a major pharmaceutical company, and venture capital funds to develop therapeutic candidates.
  • Legislative and Regulatory Tax Issues

    • Worked with the Massachusetts Department of Revenue to secure the adoption of favorable employee benefits provisions that had been adopted federally, but not by the Commonwealth.
    • Convinced state officials to place a cap on fees charged to Massachusetts corporations for the issuance of new shares of stock.
  • State and Local Tax

    • Successfully obtained a complete refund of an assessment based on apportionment and nexus issues in a Massachusetts Appellate Tax Board litigation.
    • Successfully settled a Massachusetts Appellate Tax Board case involving transfer pricing.
    • Advised clients on domicile issues, including successfully obtaining a complete abatement from the Massachusetts Department of Revenue of an assessment based on domicile.
    • Advised clients on sales tax exemptions for property purchase in connection with the construction of a research facility.
    • Advised clients on requirements for environmental Brownfields tax credits for incurring costs to remediate a hazardous waste site in Massachusetts.
  • Tax-Exempt Organizations

    • Advise universities, trade associations and other tax-exempt organizations on exemption, unrelated business income tax, and domestic and international fundraising issues.
    • Advised a major technology services/solutions company on the establishment and rollout of a new charitable foundation providing digital technology education programs for large populations of workers across the United States. We provided counsel on corporate and tax treatment, private foundation rules, private benefit and private inurement, strategy and public statements, along with corporate and tax compliance and best practices.
    • Formed and obtained exemption determination for major new organizations in the fields of medical research, housing, education and government defense research.
    • Defended tax-exempt organizations in IRS and state audits on matters that included efforts to revoke tax-exempt status or impose unrelated business income tax, tax-exempt bond qualification, employee classification, tax withholding, and reporting compliance for employees and foreign payments.
    • Advise international nonprofits and non-governmental organizations focused on global health and development in a wide range of areas, such as health-worker training, maternal and child health, education access, and economic empowerment. For both new and existing organizations, we provide comprehensive legal services including creating and structuring organizations, obtaining tax-exempt recognition where advisable, counseling on collaboration and best use of US funding, supporting intellectual property needs and licensing agreements, and creating or reviewing funding documents, such as grants, contracts and teaming agreements.
  • International Tax Planning

    • Advised a leading European private equity manager on tax aspects of acquisitions of portfolio companies relating to US-based fund investors.
    • Advised numerous US technology and life sciences companies on tax-efficient localization and management of worldwide intellectual property rights.
    • Advised on the structuring of a multinational holding organization for tax-advantaged investment in US real estate assets.


  • Award Text

    Named a Leading Tax Practice in Massachusetts

    Chambers USA


  • Award Text

    Recommended for Tax: US Taxes: Non-Contentious and Contentious

    The Legal 500 United States


  • Best Lawyers in America - Recognized 124 lawyers, naming eleven partners "Lawyer of the Year" in the 2020 edition of its peer-reviewed publication. Tax Partners Richard Andersen, William Caporizzo, Julie Hogan Rodgers, Matthew Schnall and Kim Wethly were also recognized.
  • BTI Consulting Group - Named Kim Wethly to its Client Service All-Stars 2019 list for exhibiting exceptional client service.
  • Chambers USA: America's Leading Lawyers for Business - Recognized our Massachusetts Tax Practice in 2010–2021, praising our group as having a highly skilled team of practitioners exhibiting talent across a range of areas.” A client affirms, They are very efficient, and have great depth, knowledge and experience. Chambers USA also individually recognizes William Caporizzo, Julie Hogan Rodgers and Matt Schnall as leaders in the field.
  • The Legal 500 United States – Recognized WilmerHale’s Tax practice among top law firms for our work in the areas of US Taxes: Non-Contentious in its 2019–2021 editions and US Taxes: Contentious in its 2021 edition.
  • U.S. News - Best Lawyers® - In the 2010–2021 "Best Law Firms" rankings, our tax law practice was ranked in the first tier nationally and in Boston, and in the third tier in New York.

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