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

1,026 Profile Views

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Kent Rempel-Dach

Feb 04, 2026

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

Solid experience overall with the law firm of Derek G. Chiasson. They know Tax Law inside and out and gave me great advice. Very helpful and got the job done exactly as they said they would. If you ne...

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Norman Nolan

Feb 04, 2026

A huge weight off my shoulders thanks to the amazing work of Derek G. Chiasson

Just wanted to say a huge thanks to Derek G. Chiasson and the staff. They really went above and beyond for me and my family during a very difficult legal battle. We couldn't have done it without their...

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Miriam Crist

Feb 04, 2026

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

I've worked with a few lawyers in Montréal over the years, but Derek G. Chiasson stands out for their honesty and thoroughness. They were clear about the process and kept me updated at all times. I fe...

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Geraldine Bruen

Feb 04, 2026

A huge weight off my shoulders thanks to the amazing work of Derek G. Chiasson

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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Claire Hansen

Feb 04, 2026

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

Best lawyer for Tax Law in Montréal. Period. I've seen others, but Derek G. Chiasson is on another level. They truly care about their clients and work hard to get the best results. I am so thankful I...