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Roy W. Gillig


[email protected]



Roy focuses on federal, state, and international tax planning as well as on tax controversy and litigation and other tax-related legal services. He provides advice and counsel to individuals, corporations, partnerships, nonprofits, and other entities on tax issues arising from day-to-day operations and from a broad range of transactions, including matters such as entity formation and financing; acquisitions, mergers, and dispositions; international operations and assignments; and joint ventures.

Roy has provided tax services for substantial US and international transactions, including the separate sales of two medical diagnostic laboratories in S Corporation form for approximately $50 million each. He also provided tax due diligence and post-acquisition restructuring related to the $1.5 billion acquisition of a producer of industrial water treatment products and technology with operations in more than 20 countries. Roy has worked with publicly traded companies, private equity and hedge funds, family offices, business and commercial aviation companies, technology and other manufacturers, media and entertainment companies, software developers, Internet companies, foreign exchange brokers and stock brokers, international banks, S&Ls, hospitals and health care providers, colleges and universities, and charitable organizations.

He has been requested to speak at a number of industry events, including participation in a multiday symposium convened to help Harvard Law School make recommendations to the UN on the adoption of a revised model tax treaty, and “Arkansas Best coalition” efforts to advise and influence the IRS regarding development of tax rules for hedging transactions.

Prior to joining Mintz, Roy was a partner at another law firm in the Boston area. In addition, he served as director of international tax for a prominent corporation, and worked for more than a decade in Big Four public accounting. He is also a Certified Public Accountant.


  • Syracuse University (JD)
  • Syracuse University (BS)

Recognition & Awards

  • Beta Gamma Sigma


  • Member, International Fiscal Association


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Read about recently issued IRS guidance related to the employee retention credit enacted in the Coronavirus Aid, Relief and Economic Security (“CARES”) Act.
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The CARES Act: A Summary Overview of Federal Tax Changes Affecting Businesses

April 1, 2020 | Alert | By Roy Gillig, David Salamon

This alert provides an overview of how the CARES Act, signed on March 27, 2020, eases tax burdens on businesses to increase their short-term liquidity as they deal with impacts of the COVID-19 pandemic.
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Overview of Recent U.S. Tax Reform Part I – Certain Significant Changes Impacting C-Corporations

January 11, 2018 | Alert | By Roy Gillig, Scott Pinarchick, David Salamon

On December 22, 2017, H.R. 1, the Tax Cuts and Jobs Act (the “Tax Act”) was signed into law. As the first comprehensive U.S. federal income tax reform in over thirty years, the Tax Act includes dramatic changes to tax provisions applicable to businesses and their owners as well as individuals.
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On May 5, 2016, the IRS released new guidance regarding the renewable energy production tax credit (“PTC”) and energy investment tax credit (“ITC”) which most in the renewable energy industry will find favorable. 
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The “Protecting Americans from Tax Hikes” (PATH) Act was recently signed into law, and two provisions in particular benefit venture capital, private equity, and other investors owning or planning to purchase a corporation.
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News & Press

Mintz advised GPB Capital on its acquisition of a majority equity stake in Westwood, Massachusetts-based Prime Motor Group. The acquisition by Capstone Automotive Group, an affiliate of GPB, expands the group’s footprint throughout New England.
Mintz represents NuCana, which completed its approximately $114 million initial public offering. The United Kingdom-based clinical-stage company focuses on improving treatment outcomes for patients with cancer.
Mintz represented Right Networks in selling a controlling interest in the company to BV Investment Partners, a middle-market private equity firm focused on the business services and IT services sectors. 
Mintz lawyers represented Bio-Medical Devices, Inc. in the sale of a section of its manufacturing operations to Stryker Corporation, one of the world’s leading medical technology companies.