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

1,032 Profile Views

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Kristopher Marquardt

Feb 04, 2026

Derek G. Chiasson did a great job handling my complex Tax Law case from start to finish

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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Sonia Zieme

Feb 04, 2026

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

I appreciate how Derek G. Chiasson handled my case. No fluff, just straight to the point and very effective representation for my Tax Law matter. They are obviously very experienced and know how to na...

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Edward Hudson

Feb 04, 2026

So glad I called Derek G. Chiasson to handle my Tax Law case in Montréal

Everyone at Derek G. Chiasson's office in Montréal was so nice and helpful. They made a tough situation a lot easier to deal with by being so patient and explaining everything clearly. I never felt li...

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Frank Schiller

Feb 04, 2026

Great people who truly care at Derek G. Chiasson - the best legal team in Quebec

Everyone at Derek G. Chiasson's office in Montréal was so nice and helpful. They made a tough situation a lot easier to deal with by being so patient and explaining everything clearly. I never felt li...

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Jamie Lindgren

Feb 04, 2026

Five stars for the incredible team at Derek G. Chiasson in Montréal - they are amazing

Super helpful and professional staff at Derek G. Chiasson's office. Thanks again for everything you did for me! It was a long journey, but you made it much easier with your constant support and legal...