Jeffrey C. Trossman Senior Counsel | Toronto

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

• The Canadian Legal Lexpert Directory 2025 (Corporate Tax)

• Chambers Global Legal Guide 2025 (Senior Statesperson – Tax)

• Chambers Canada Legal Guide 2025 (Senior Statesperson – Tax)

• The Best Lawyers in Canada 2025 (Tax Law)

• Lexology Index Thought Leaders: Global Elite 2024 (Corporate Tax – Advisory)

• Lexpert Special Edition: Insolvency and Restructuring 2024

• Lexpert Special Edition: Finance and M&A 2024

• Lexology Index: Canada 2023 (Corporate Tax)

• Lexology Index: Tax 2023 (Corporate Tax – Controversy)

• Lexpert's Leading 500 Cross-Border Lawyers: A Guide to Doing Business in Canada 2023 (Corporate Tax)

• The Legal 500 Canada 2023 (Tax)

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. From 2015 to 2023 he 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.

• Moderator : Tax & Technology
  The Canadian Tax Foundation, Toronto Young Practitioners Group Meeting, Toronto, Ontario, June 13, 2024.
• Speaker : Interest Deductibility
  The Canadian Bar Association, 2024 Tax Law for Lawyers Conference, Niagara-on-the-Lake, Ontario, May 26 –31, 2024.
• Panellist : The General Anti-Avoidance Rule
  Faculty of Law – University of Toronto, Toronto, Ontario, April 4, 2024.
• Co-chair : 36th Annual Senior Tax Practitioners' Institute
  Prince of Wales Hotel, Niagara-on-the-Lake, Ontario, November 2-3, 2023.
• 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.

• 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