Jeffrey has been recognized as a leading tax practitioner in the following publications:

• Who's Who Legal: Thought Leaders – Global Elite 2024 (Corporate Tax – Advisory)

• The Canadian Legal Lexpert Directory 2024 (Corporate Tax)

• Chambers Global: The World's Leading Lawyers for Business 2024 (Tax)

• Chambers Canada: Canada's Leading Lawyers for Business 2024 (Tax)

• Who's Who Legal: Canada 2023 (Corporate Tax)

• Who's Who Legal: Global 2023 (Corporate Tax – Controversy)

• The 2023 Lexpert/American Lawyer Guide to the Leading 500 Lawyers in Canada (Corporate Tax)

• The Legal 500 Canada 2023 (Tax)

• The Best Lawyers in Canada 2023 (Tax Law)

Jeffrey previously served as chair of the National Taxation Section of the Canadian Bar Association, and co-chair of the Joint Committee on Taxation of the Canadian Bar Association and Chartered Professional Accountants of Canada. He is also co-chair of the Fiscal and Tax Competitiveness Council of the C.D. Howe Institute, an advisor to the Board of Governors of the Canadian Tax Foundation, and the editor of the publication Perspectives on Tax Law & Policy. Jeffrey has served as a member of the Research Committee of the Canadian Tax Foundation and the Planning Committees for the Canadian Tax Foundation's September 2017 Policy Conference on Taxation of Private Corporations and the November 2017 Annual Conference of the Canadian Tax Foundation. Since 2015, he has co-chaired the Senior Tax Practitioner's Institute, an invitation-only meeting of the leading senior tax practitioners in Canada, held annually in Cambridge, Ontario.

Jeffrey writes, teaches and speaks frequently for several organizations, including the Canadian Tax Foundation, the International Fiscal Association, the Canadian Bar Association, the Ontario Bar Association, the University of Toronto and Osgoode Hall Law School.

• Co-author : Deeper into the Knight: Exploring Deans Knight and Its Effects on the Canadian GAAR
  Tax Notes International, September 25, 2023, p. 1639.

• Faculty Member : Deeper into the Knight: Exploring Deans Knight Income Corp. v. Canada and its Effects on the GAAR
  Osgoode Hall Law School Professional Development, Toronto, Ontario, June 28, 2023.
• Presenter : Responsible Tax Policies to Promote Investment
  C.D. Howe Institute, Tax Reform Conference, Toronto, Ontario, June 15, 2023.
• Presenter : Personal Taxation of Capital Gains and Investment Income: Policy Options
  C.D. Howe Institute, Tax Reform Conference, Toronto, Ontario, June 14, 2023.
• Speaker : Interest Deductibility
  The Canadian Bar Association, 2023 Tax Law for Lawyers Conference, Niagara-on-the-Lake, Ontario, May 28 – June 2, 2023.
• Speaker : Surplus Stripping – Key Principles and Tax Policy
  Faculty of Law – University of Toronto, Toronto, Ontario, February 16, 2023.
• Speaker : The James Hausman Tax Law and Policy Workshop
  Faculty of Law – University of Toronto, Toronto, Ontario, January 11, 2023.
• Co-chair : 35th Annual Senior Tax Practitioners' Institute
  Langdon Hall, Cambridge, Ontario, October 27-28, 2022.
• Speaker : Translating Model Rules: Scope & Computation
  Canadian Tax Foundation, Pillar Two Symposium, Ottawa, Ontario, July 27, 2022.
• Chair : 2022 Lex Mundi Tax Practice Group Global Meeting
  Milan, Italy, June 19-20, 2022.
• Co-chair : 34th Annual Senior Tax Practitioners' Institute
  Langdon Hall, Cambridge, Ontario, October 28-29, 2021.
• Speaker : Anti-Avoidance Symposium
  Canadian Tax Foundation, GAAR Symposium (on-line), Toronto, Ontario, July 15, 2021.

• Quoted : Experts call for clarity in GAAR rationale, question proposed statutory amendments
  Article by Karunjit Singh, Law360 Canada, June 29, 2023.

Admitted to the Ontario Bar – 1991
LLB, University of Toronto – 1989
MA, University of Toronto – 1984
BA, University of Toronto – 1983