Derek G. Chiasson

Derek G. Chiasson

Tax Law
Recognized in Best Attorney USA since 2018

About Derek

Derek Chiasson is a partner in our tax team. His principal focus is on domestic and international tax aspects of mergers and acquisitions, corporate finance and corporate reorganizations, for public and private corporations. He also regularly advises on tax disputes, commodity taxes and executive compensation. Derek leverages his broad experience to bridge tax, finance and legal aspects of the transactions and reorganizations he works on, while maintaining strong technical skills, attention to detail and creativity. He also has industry experience, having served as vice-president, corporate development/strategy and legal affairs of a multi-national US public company in the video game industry listed on the NASDAQ exchange.

Derek Chiasson is a partner in our tax team. His principal focus is on domestic and international tax aspects of mergers and acquisitions, corporate finance and corporate reorganizations, for public and private corporations. He also regularly advises on tax disputes, commodity taxes and executive compensation. Derek leverages his broad experience to bridge tax, finance and legal aspects of the transactions and reorganizations he works on, while maintaining strong technical skills, attention to detail and creativity. He also has industry experience, having served as vice-president, corporate development/strategy and legal affairs of a multi-national US public company in the video game industry listed on the NASDAQ exchange.

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Reviews

4.6 / 5

37 Reviews

1,027 Profile Views

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Francisco Nolan

Feb 04, 2026

Solid work and professional service from Derek G. Chiasson in Montréal for Quebec residents

Needed help with Tax Law and Derek G. Chiasson delivered on their promises. They're professional, efficient, and easy to talk to. Good choice for anyone in Quebec looking for high-quality legal repres...

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Ismael Davis

Feb 04, 2026

Excellent legal representation provided by Derek G. Chiasson for my Tax Law case

Derek G. Chiasson is fantastic and very professional. Don't hesitate to hire them if you're in Quebec and need help. They really know their stuff and will go the extra mile to make sure you're taken c...

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Katherine Bernier

Feb 04, 2026

Absolutely Great! I couldn't be happier with the service from Derek G. Chiasson

Derek G. Chiasson is fantastic and very professional. Don't hesitate to hire them if you're in Quebec and need help. They really know their stuff and will go the extra mile to make sure you're taken c...

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Pamela Lehner

Feb 04, 2026

Top notch experts in Montréal - Derek G. Chiasson is by far the best lawyer I've ever had

Derek G. Chiasson is fantastic and very professional. Don't hesitate to hire them if you're in Quebec and need help. They really know their stuff and will go the extra mile to make sure you're taken c...

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June Dooley

Feb 04, 2026

Outstanding experience with Derek G. Chiasson in Montréal - truly the best legal team

I was really stressed about my case in Montréal, but Derek G. Chiasson made everything so smooth and stress-free. Seriously, the best decision I've made lately was hiring them. They handled every deta...