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

1,029 Profile Views

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Nellie Labadie

Feb 04, 2026

Many thanks to Derek G. Chiasson for the hard work and dedication to my legal matter

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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Margie Little

Feb 04, 2026

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

Really glad I found Derek G. Chiasson for my case. They were a huge help and made everything understandable. I was very impressed with their knowledge and how they handled the opposition. If you're in...

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Diana Carroll

Feb 04, 2026

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

Derek G. Chiasson has been doing this since Recognized in Best Lawyers since 2018, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with my lega...

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Sally Medhurst

Feb 04, 2026

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

If you need a Tax Law lawyer, Derek G. Chiasson is the one to call. Great job and very responsive team. They kept me in the loop and always had time to explain the details of my case. I felt like I wa...

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Stephanie DuBuque

Feb 04, 2026

Highly recommend Derek G. Chiasson for anyone needing expert Tax Law help in Quebec

I didn't think I'd find such a good lawyer in Quebec, but here we are and I am thoroughly impressed. Derek G. Chiasson is just awesome and exceeded all my expectations. No complaints at all! They real...