William G. Cavanagh

Co-Head of Tax, United States
Norton Rose Fulbright US LLP

New York
United States
T:+1 212 408 5388
New York
United States
T:+1 212 408 5388
William G. Cavanagh

William G. Cavanagh



Bill Cavanagh is the co-head of the Norton Rose Fulbright US LLP tax practice and specializes in corporate, partnership, private equity and international tax matters. He advises a broad array of US and multinational clients on a wide variety of US and cross-border tax issues. In recent years, he has worked extensively with clients in structuring, negotiating and implementing significant domestic and cross-border mergers and acquisitions, spin-offs, project finance transactions, securities offerings, private equity deals, financings and securitized loan transactions. He has also represented clients in numerous tax controversy disputes with the Internal Revenue Service and with various state and local tax authorities.  Bill has written extensively on tax issues and is a frequent speaker on a broad array of tax topics.

Professional experience

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LL.M, New York University School of Law, 1979
JD, George Washington University Law School, 1975
BA, Syracuse University, 1972

  • District of Columbia Bar
  • New York State Bar
  • "Hot Tax Topics for Closely-Held Businesses:  Selected Federal and State Tax Traps and Opportunities," USC Gould School of Law 2018 Tax Institute, January 29, 2018
  • "Negotiating Taxable Acquisition Agreements:  Tax Traps for the Unwary (And The Wary Too!)," Practicing Law Institute, October 2017
  • "Hot Tax Topics:  Selected Current Federal and State Tax Planning and Tax Litigation Issues," 76th Annual NYU Institute on Federal Taxation, October 2017
  • "Hot Tax Topics in Small Bites For the Closely-Held Business," CBIZ & MHM Conference, July 2017
  • "Tax Planning with BEPS:  How Many People does it Take to Earn Profits Offshore and Other BEPS Quandaries – An Interim Report, Plain English Version," Tax Forum, May 2, 2016
  • "Tax Planning for Global Supply Chain Management Structures – OECD BEPS and Beyond – Transactional Analysis" NYSBA Tax Section Annual Meeting, January 27, 2016
  •  "'World is Flat' Offshore Tax Strategies – Supply Chain Lessons from Apple, Caterpillar, Camp Proposal and Beyond," Tax Executives Institute, Inc. Westchester-Fairfield Chapter, May 14, 2014
  • "Partnership Tax Allocations – Theory and Practice" or "Why I don't liquidate in accordance with capital accounts anymore (no matter what the learned commentators say)," University of Virginia Tax Law Conference, April 11, 2014
  • "Outbound Reorganizations and Profit Repatriation: Where's the Beef -- A Transactional Analysis," Tax Forum, May 2013
  • "Intangibles and Transfer Pricing — Where the Action Is," Tax Executives Institute, Inc., April, 2011
  • "Targeted Allocations Hit the Spot," Tax Notes, p. 89, October 4, 2010
  • "'World is Flat' Supply Chain Management: U.S. Tax Opportunities and Pitfalls in Earning (Shifting?) Taxable Profits Offshore: Selected Issues," Practicing Law Institute, October 2010
  • "How Much U.S. Presence is too Much for Foreign Corporations — U.S. Tax Traps for the Unwary," Tax Executives Institute, Inc., December 2009
  • "What Happens When Tax Mistakes are Made: Equity in the Tax Law," 65th Annual New York University Institute on Federal Taxation, October 2007
  • "Substance, Form and Subchapter C:  A Modest (Simplification) Proposal," Tax Forum, February 2006
  • "Tax Issues for Troubled Corporations," New York University Graduate Tax Workshop, February 2005
  • "There's Gold in Them Thar' Hills (And Some Fool's Gold Too) - State Tax Planning Opportunities and Pitfalls," Tax Review, October 2001
  • Clerk to Judge Arthur L. Nims, III, of the U.S. Tax Court, 1979-1980  
  • Board of Advisors, New York University Institute on Federal Taxation 
  • Chair: 
    • 72nd Annual New York Institute on Federal Taxation, 2013 
    • 65th Annual New York University Institute on Federal Taxation, 2006 
    • International Bar Association program on “Spin-offs and Split-ups” (Barcelona, Spain), 1999 
    • 57th Annual New York University Institute on Federal Taxation, 1998 
    • International Bar Association program on “Negotiating Stock Purchase Agreements” (Paris, France), 1995 
  • Member, International Bar Association
  • Member, American Bar Association
  • Member, New York State Bar Association


Webinar | US tax reform in a Canadian context

Webinar | Thursday, January 11, 2018

New York advises on best esoteric ABS deal of 2017

Publication | June 12, 2018