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.

Practice Areas

Awards & Recognition

Contact Me

Login Required

Please login to contact this attorney

Login to Contact

Reviews

4.6 / 5

37 Reviews

1,031 Profile Views

C

Chad Howell

Feb 04, 2026

Simply amazing representation from Derek G. Chiasson's office during my recent legal matter

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...

E

Erik Schmitt

Feb 04, 2026

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

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...

M

Marcos Schmidt

Feb 04, 2026

The absolute best in Montréal for Tax Law - and I mean that from the bottom of my heart

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...

F

Forrest Kiehn

Feb 04, 2026

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

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...

R

Ramiro Jakubowski

Feb 04, 2026

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

Honestly, I can't thank Derek G. Chiasson enough for everything they've done for me. They really know their stuff when it comes to Tax Law and it shows in the results. 10/10 would recommend to anyone...