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

With lawyers who are recognized globally as leading practitioners in the field, our team advises clients on the tax implications of domestic and international transactions, including mergers, acquisitions, financings, investments, joint ventures and restructurings. Widely known for our work with tax-exempt organizations, we advise such clients on an array of issues presented by their tax-exempt status. We also represent clients in seeking favorable guidance and rulings from the IRS and state tax authorities, and defend them in tax litigation and audits. In addition, we counsel clients in every industry on the design of executive compensation arrangements and on compensation and benefits issues in general.

Wethly, Kimberly B.

Kimberly B. Wethly

Chair, Tax Practice Group

+1 617 526 6481 (t)


Burke, Robert D.

Robert D. Burke


+1 617 526 6470 (t)


Kilgore, R. Scott

R. Scott Kilgore


+1 202 663 6116 (t)


Null, Amy A.

Amy A. Null


+1 617 526 6541 (t)


Schnall, Matt

Matthew Schnall


+1 617 526 6892 (t)


Wethly, Kimberly B.

Kimberly B. Wethly


+1 617 526 6481 (t)


Ritt, Roger M.

Roger M. Ritt

Senior Counsel

+1 617 526 6475 (t)


Bormann, Amelia E.

Amelia E. Bormann

Special Counsel

+1 617 526 6860 (t)



Our tax practice encompasses areas including mergers and acquisitions, international and domestic tax planning, compensation and benefits, private equity and hedge funds, federal and state tax controversies and litigation, and tax exempt organizations. Recently, we have:

  • structured US and cross-border mergers and acquisitions involving public and private companies;
  • advised fund sponsors on the off-shore and on-shore structure and operation of private equity and hedge funds for domestic, foreign and tax-exempt investors;
  • assisted with the cross-border restructuring of equity and compensation plans in connection with multi-national companies’ acquisitions of US subsidiaries;
  • defended clients before the IRS regarding tax benefits claimed with respect to offshore investments;
  • advised universities, museums, social welfare organizations and other entities on novel tax issues presented by their nonprofit status; and
  • provided guidance and assistance to public and private companies in drafting and implementing equity compensation plans and other nonqualified incentive compensation arrangements.

Publications & News


November 1, 2017

WilmerHale Honored Throughout 2018 U.S. News - Best Lawyers® Best Law Firms List, Named Intellectual Property Litigation Firm of the Year

WilmerHale has been recognized among the 2018 U.S. News and World Report and Best Lawyers® list of Best Law Firms, an honor it has earned since the inception of these rankings in 2010.

August 14, 2017

Massachusetts Issues Proposed Regulations Requiring Remote Sellers to Collect Sales Tax

We previously reported to you that the Massachusetts Department of Revenue (DOR) had revoked Directive 17-1 requiring the collection of Massachusetts sales and use taxes by Internet vendors that meet certain sales thresholds in Massachusetts. The DOR has now issued proposed regulations substantially similar to Directive 17-1.

July 11, 2017

Massachusetts Revokes Directive Requiring Remote Sellers to Collect Sales Tax

On June 28, 2017, the Massachusetts Superior Court issued a declaratory judgment ruling that Directive 17-1 was invalid because the DOR had not followed the notice and comment procedures applicable to agency regulations under the Massachusetts Administrative Procedure Act, M.G.L. c. 30A.

June 9, 2017

The Legal 500 United States 2017 Recognizes 125 WilmerHale Lawyers Across 28 Practice Areas

The Legal 500 United States has released its 2017 rankings, recommending 125 WilmerHale lawyers—including 12 who are named to its elite “Leading Lawyers” list and two on its “Next Generation Lawyers” list—and 28 practice areas in its 11th edition.

June 7, 2017

Massachusetts Requires Remote Sellers to Collect Sales Tax Beginning July 1, 2017

The Massachusetts Department of Revenue (DOR) recently issued guidance under which it will require the collection of Massachusetts sales and use taxes by remote sellers that meet certain sales thresholds in Massachusetts.

May 26, 2017

WilmerHale Lawyers and Practices Recognized in 2017 Edition of Chambers USA

Chambers and Partners announced its rankings for the 2017 edition of Chambers USA: America's Leading Lawyers for Business, with WilmerHale listed among the nation's best in 50 practice area categories. Chambers also ranked 86 WilmerHale lawyers as leaders in their respective fields.

February 7, 2017

BTI Consulting Recognizes Three WilmerHale Partners as Client Service All-Stars

Partners Paul Architzel, Paul Eckert and Kimberly Wethly were named to BTI's Client Service All-Stars 2017 list.

February 3, 2017

Park Square and WilmerHale Release 17th Annual Technology and Life Sciences Compensation and Entrepreneurship Study

Growth rate in salaries for private company technology executives track higher than comparable life science leaders for the second year in a row.

September 22, 2016

WilmerHale Reps Eleven Biotherapeutics in Acquisition of Viventia Bio

The acquisition creates a NASDAQ-listed company focused on the development of novel therapies based upon antibody fragments genetically fused to cytotoxic proteins, or targeted protein therapeutics, as new treatments in areas of oncology with significant unmet need.

August 10, 2016

WilmerHale Advises Orbitera in Acquisition by Google

The Google Cloud Platform team shares Orbitera's vision for seamless purchase and deployment of IT services across heterogeneous cloud infrastructure.


  • Best Lawyers in America - Recognized 107 lawyers, naming nine partners "Lawyer of the Year" in the 2018 edition of its peer-reviewed publication. Tax Partners Richard Andersen, Robert Burke, William Caporizzo, Roger Ritt, Julie Hogan Rodgers, Matthew Schnall and Kim Wethly were also recognized.
  • BTI Consulting Group - Named Kim Wethly to its Client Service All-Stars 2017 list for exhibiting exceptional client service.
  • Chambers USA: America's Leading Lawyers for Business - Recognized our Massachusetts Tax Practice in 2010-2017, praising our practice as having a "highly skilled team of practitioners exhibiting talent across a range of areas,” with one client describing our team as “exceptional.” Chambers USA has individually recognized William Caporizzo, Robert Burke, Roger Ritt, Julie Hogan Rodgers and Matt Schnall as leaders in their field.
  • The Legal 500 United States - Recommended the firm for Tax: US Taxes: Non-Contentious and recognized Richard Andersen, Robert Burke, William Caporizzo, Julie Hogan Rodgers and Kimberly Wethly in its 2017 edition.
  • U.S. News - Best Lawyers® - In the 2010-2017 "Best Law Firms" rankings, our tax law practice was ranked in the first-tier nationally and in Boston, and in the second-tier in New York.
  • Articles published by members of our tax practice address a wide variety of topics, including Internet taxation, executive compensation, employee benefits, international taxation, and state and local taxation.
  • Our tax partners frequently present at conferences sponsored by leading professional organizations in the field. These include the American Bar Association, Boston Bar Association, New York State Bar Association, CompStudy.com, BIO General Counsels Committee, the New England State and Local Tax Forum, the Tax Executive Institute, Inc. and the Venture Capital CFO Symposium..