Recognition | 04 September 2025
Best Lawyers in Canada 2026: 36 of our Lawyers Recognized Once Again
Montréal, September 4, 2025 – We are pleased to announce that 36 lawyers at De Grandpré Chait are featured in the 2026 edition of Best Lawyer...
Lisa-Marie Gauthier
LawyerLisa-Marie is a member of our Tax Litigation team. She helps individuals and SMEs challenge income and commodity tax disputes and handles everything from audits to court challenges with unfailing determination and enthusiasm. She proposes creative and effective solutions that meet—and often anticipate—taxpayers’ needs.
Lisa-Marie works closely with her colleagues on the Business Law team to ease the financial burden faced by entrepreneurs. She provides tax planning advice in the context of corporate restructuring and reorganization and develops strategies tailored to each clients’ business context.
Lisa-Marie is a member of our Tax Litigation team. She helps individuals and SMEs challenge income and commodity tax disputes and handles everything from audits to court challenges with unfailing determination and enthusiasm. She proposes creative and effective solutions that meet—and often anticipate—taxpayers’ needs.
Lisa-Marie works closely with her colleagues on the Business Law team to ease the financial burden faced by entrepreneurs. She provides tax planning advice in the context of corporate restructuring and reorganization and develops strategies tailored to each clients’ business context.
Field of practice
Best Lawyers in Canada® – Ones to Watch Tax Law- 2026
- Les obligations fiscales des influenceurs
Lunch conference, Association de planification fiscale et financière (APFF), 2022
Master’s Degree, Taxation
HEC Montréal, ongoing
D.E.S.S., Taxation
HEC Montréal, 2019
LL.B.
Université de Montréal, 2017
Member, Barreau du Québec
Member, Jeune Barreau de Montréal
News | 18 October 2022
Martin Delisle was a speaker at the Annual Conference of the Association de Planification Fiscale et Financière du Québec ("APFF")
Montreal, October 18, 2022 – On October 5, 6 and 7, Martin Delisle, tax litigation partner and head of the Business Group, participated as a guest spea...
Publications | 11 March 2022
Influencers and content creators: On the tax authorities' radar
Did you know that free products received by an influencer or content creator on social media can be considered as a source of income for tax purposes? Be it on TikTok, Twitch, Instagram, etc...
Publications | 26 March 2021
How tax authorities determine that you have failed to declare some of your income
The tax authorities have a few tricks up their sleeves when it comes to assessing taxpayer compliance. Over the years, they have developed several “indirect” or “altern...
Publications | 18 March 2021
Mandatory Transaction Disclosure Regulation
Following legislative amendments requiring that certain transactions be disclosed to the Québec Revenue Agency, the Government of Québec issued an order identifying the...
Publications | 14 October 2020
Deadline for disclosure of a nominee agreement
On May 17, 2019, the Quebec Minister of Finances announced the implementation of new rules regarding the disclosure of nominee agreements to Revenu Québec. These new ru...
Publications | 21 July 2020
Safe Income Calculation in Tax Planning: To Include or Exclude Taxes Payable?
The introduction of the taxable capital gain in 1972 was a key trigger for many changes in taxation. While taxpayers favoured the realization of dividends in the form ...
