Sébastien Rheault

Sébastien Rheault


T 514 982-6148


Sébastien Rheault (LL.L., cum laude, Dean’s List; MBA) is a partner with Barsalou Lawson Rheault, a Top 5 Tax Law Boutique in Canada (Thompson Reuters).

Member of the Law Society of Ontario and the Quebec Bar, with over 20 years of experience in transfer pricing, litigation and tax controversy (Highly Regarded ranked in Euromoney and International Tax Review), Sébastien primarily represents Canadian, American, and European multinational corporations on audit, at the Competent Authority level in the context of Advance Pricing Arrangements (APA) and Mutual Agreement Procedures (MAP), at the Canada Revenue Agency and Revenue Quebec’s Appeals Branches, as well as before federal (Tax Court of Canada, Federal Court, Federal Court of Appeal) and provincial courts.

Sébastien also advises on various corporate tax matters including transfer pricing, tax incentives (SR&ED credits, e-business), non-resident trust rules, Canada’s income tax conventions, the General Anti-avoidance Rule (GAAR), corporate restructurings as well as mergers and acquisitions.

Sébastien is a past Governor of the Canadian Tax Foundation (2015-2018). He is an active board member and a past president of the Canadian Bar Association’s Tax Section (Quebec division) and a past member of the CPA-ABC Joint Committee on Taxation. He presented at the Organization for Economic Co-operation and Development’s (OECD) invitation on various Base Erosion Profit Shifting (BEPS) consultations (Work Party 6 on the transfer pricing aspects of intangible property).

Sébastien is part of the organizing committee for the Canadian Tax Foundation (CTF) conference on transfer pricing. He is also a frequent speaker and contributor to the Canadian Tax Foundation (CTF), the Tax Executives Institute (TEI), the Association de planification fiscale et financière (APFF), the Association of Corporate Counsels (ACC), Quebec Chapter and other organizations.

Sébastien and other members of the firm participate and contribute annually to the ‘’Defi 808 Bonneville’’, a cycling event that raises funds allowing to accompany high-level student-athletes in Canada through college and university studies, to support them financially in their pursuit of academic and sports excellence, and to contribute to the promotion of models in Quebec society at the Fondation de l’athlète d’excellence du Québec (FAEQ).

Conferences and Publications

IFA – International Tax Conference
International Fiscal Association, May 2021

CTF – Transfer Pricing Conference with the CRA and OECD
Canadian Tax Foundation, February 2021

APFF – Annual Congress
Association de planification fiscale et financière, Annual Tax Conference, October 2020

IFA – International Conference
International Fiscal Association, May 2020

TEI – Tax Controversy Seminar, Morgan Lewis
Tax Executives Institute, Los Angeles, February 2020

Exchange of Information: Issues, Use and Collaboration, 2019
Life Sciences Law in Canada, 2nd Edition (Chapter on tax aspects including transfer pricing and tax incentives), 2019

“Introduction to International Tax in Canada”, 6th edition, Thomson Reuters

(co-author/collaboration – Cash Pooling Arrangements), 2019
Transfer Pricing: Review of Canadian caselaw and pending cases, 2019

IFA – National Tax Conference
Co-panelist with Canada Revenue Agency on International Exchanges of Information
International Fiscal Association, Montreal, May 2019

TEI – Annual National Tax Conference
Co-panelist on Canada Revenue Agency access to tax provisions and related matters
Tax Executives Institute, Ottawa, May 2019

CTF – Transfer Pricing Conference with the Canada Revenue Agency and OECD
Canadian Tax Foundation, March 2019

APFF – Transfer Pricing Panel with the Canada Revenue Agency (ITD) and OECD
Association de planification fiscale et financière, Annual Tax Conference, October 2018

TEI – Transfer Pricing and BEPS under Canadian law
Tax Executives Institute, National Conference, Ottawa, May 2018

APFF – International Tax & Transfer Pricing Panel with the Canada Revenue Agency and OECD
Association de planification fiscale et financière, Annual Tax Conference, October 2017

CTF – Voluntary Disclosure Programs in Canada, Quebec and U.S.
Canadian Tax Foundation, September 2017

CTF – Legal Implementation of BEPS in Canada
Canadian Tax Foundation, July 2017

APFF – Quebec Revenue Congress on Fiscal Advantages
Association de planification fiscale et financière, Symposium Crédits fiscaux en SR&ED, Tremblant 2015 and Esterel, 2016

Global Transfer Pricing Conference
“BEPS Driven Controversy”, Bloomberg BNA / Baker McKenzie, Toronto, October 2015

APFF – Transfer Pricing and International Tax Panel
Annual Tax Conferences, 2014 and 2015

ACC – Transfer Pricing and Other Current Tax Issues for Corporations (Seminar)
Association of Corporate Counsels, Montreal, March 2015

AMBAQ – “Tax Credits in the Gaming Industry”
MBA Magazine – MBA Association of Quebec, January 1st, 2015

CPA Canada – Canadian Institute of Chartered Accountants
SR&ED Tax Credits Symposium, Documenting & Defending SR&ED Claims, Toronto, 2015

CTF – Technical Seminar on Transfer Pricing
Co-speaker with Sue Murray, Director at Competent Authority (CRA)
Canadian Tax Foundation, Montreal, February 20, 2014 and Ottawa, May 28, 2014

CTF – LexisNexis lui a attribué la mention « Distinction » selon une évaluation par ses pairs en fiscalité
Canadian Tax Foundation, 2012

CTF – Recharacterization of Transactions in Transfer Pricing Audits & Appeals
Canadian Tax Foundation, Annual Conference on Report of Proceedings of the 63rd Tax Conference, 2011


Canadian Bar Association, Tax Section – Québec Division (CBA)
President, Tax Section, 2010-2012
Member and President, Tax Section, 2013-2019

Canadian Tax Foundation (CTF)
Member, Board of Governors, 2015-2019

Association de Planification Fiscale et Financière (APFF) (Quebec Tax Association)
Member of the Organizing Committee of the Annual Tax Conferences, 2015 and 2019

International Fiscal Association (IFA)

MBA Association of Quebec (AMBAQ)

Association of Corporate Counsel (ACC)

Bloomberg BNA / Baker McKenzie Transfer Pricing Conference

Canadian Institute of Chartered Accountants (CPA Canada)



Tax Executive Institute (TEI)



2000 McGill College Avenue
Suite 1500
Montréal (Québec)
Canada H3A 3H3

T 514 982-3355
T 416 777-9380
F 514 982-2550