John O'Connor

John O'Connor

Tax Law
Recognized in Best Attorney USA since 2021

About John

John O'Connor is a partner and Co-Head in the Tax Group in Toronto. John's practice involves all areas of corporate tax, focusing primarily on complex mergers, acquisitions and reorganizations, along with advising tax-exempt entities. In addition, John regularly consults on a variety of technical tax matters.

John O'Connor is a partner and Co-Head in the Tax Group in Toronto. John's practice involves all areas of corporate tax, focusing primarily on complex mergers, acquisitions and reorganizations, along with advising tax-exempt entities. In addition, John regularly consults on a variety of technical tax matters.

John O'Connor is a partner and Co-Head in the Tax Group in Toronto. John's practice involves all areas of corporate tax, focusing primarily on complex mergers, acquisitions and reorganizations, along with advising tax-exempt entities. In addition, John regularly consults on a variety of technical tax matters.

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Reviews

4.5 / 5

39 Reviews

1,036 Profile Views

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Kathy Rohan

Feb 04, 2026

Would recommend John O'Connor for sure to anyone in Toronto needing legal help

I wasn't sure who to call for my Tax Law problem, but I'm so glad I went with John O'Connor. They really listened to me and understood my situation. It was such a relief to have someone so knowledgeab...

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Lauren Auer

Feb 04, 2026

Absolutely Great! I couldn't be happier with the service from John O'Connor

Really glad I found John O'Connor 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 Ont...

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Cody Cole-Gulgowski

Feb 04, 2026

Great people who truly care at John O'Connor - the best legal team in Ontario

Everyone at John O'Connor's office in Toronto 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 like ju...

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Jan Veum

Feb 04, 2026

Top notch experts in Toronto - John O'Connor is by far the best lawyer I've ever had

John O'Connor is fantastic and very professional. Don't hesitate to hire them if you're in Ontario and need help. They really know their stuff and will go the extra mile to make sure you're taken care...

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Erma Gorczany

Feb 04, 2026

Highly recommend John O'Connor for anyone needing expert Tax Law help in Ontario

I was really stressed about my case in Toronto, but John O'Connor made everything so smooth and stress-free. Seriously, the best decision I've made lately was hiring them. They handled every detail wi...