William Corcoran

Firm: Cooley
Location: Boston - MA

  • 500 Boylston Street 14th Floor
    Boston, MA 02116-3736
  • Tel : 617 937 2420
  • Fax : 617 937 2400

Bill Corcoran advises on the federal and state income tax consequences of corporate and partnership mergers and divisions. He also represents leveraged buyout, venture capital, mezzanine and other alternative investment vehicles on formation and investment issues. Bill’s practice includes assisting non-US investors in alternative investment vehicles formed to invest in equity, debt, real estate and infrastructure projects. He has extensive expertise in advising foreign sovereigns investing in the US. Bill also represents multinational corporations on financing, tax treaty planning, and other cross-border tax issues. He also has experience representing public and private companies involved in developing the exchangeable share structure and advises US investors investing in Canada through alternative investment vehicles.

Bill’s representative matters include:

  • Portfolio investment by a US investor in a Canadian corporation using exchangeable shares and
    designed to preserve Canadian controlled private corporation (CCPC) status
  • Acquisition of the stock and assets of a divisional business of a public corporation involving tax
    issues in the US, Canada and China
  • $300 million acquisition of the stock of a domestic Subchapter S corporation, together with the filing
    of a Section 338(h)(10) election to step-up the inside tax basis of the target corporation’s assets
  • Leveraged buyout of a US corporation by a Canadian buyout fund
    Purchase of a publicly-traded corporation by another publicly-traded corporation involving US golden
    parachute tax rules and recently enacted deferred compensation tax rules


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Our lawyers focus on all facets of US federal, state, local and international tax law. We advise on thousands of transactions annually, and we provide tax advice to clients in a variety of sectors, including technology, life sciences, energy, telecommunications and real estate, from small deals involving startups to multibillion-dollar mergers and acquisitions. We also have long been recognized as one of the premier firms in the country for handling administrative tax controversies and tax litigation, including numerous landmark tax cases. In every matter, we proceed collaboratively with clients and other Cooley lawyers from the earliest stages of a transaction or dispute – always with the same goal of delivering sophisticated, creative and practical tax solutions that work.