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

1,042 Profile Views

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Randall Turcotte

Feb 04, 2026

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

John O'Connor has been doing this since Recognized in Best Lawyers since 2021, and it definitely shows in their work. They're pros through and through and I wouldn't trust anyone else with my legal ma...

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Esther Borer

Feb 04, 2026

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

Just wanted to say a huge thanks to John O'Connor 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 con...

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Marie Beatty

Feb 04, 2026

So glad I called John O'Connor to handle my Tax Law case in Toronto

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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Bobby Runolfsson

Feb 04, 2026

Solid work and professional service from John O'Connor in Toronto for Ontario residents

Needed help with Tax Law and John O'Connor delivered on their promises. They're professional, efficient, and easy to talk to. Good choice for anyone in Ontario looking for high-quality legal represent...

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Sylvester Block

Feb 04, 2026

A huge weight off my shoulders thanks to the amazing work of John O'Connor

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...