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

1,040 Profile Views

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Curtis Ledner

Feb 04, 2026

So happy with the results of my case thanks to the hard work of John O'Connor and staff

If you're looking for someone who actually cares and will fight for you, go to John O'Connor. They helped me out big time with my Tax Law issue and kept me informed at every step of the process. Their...

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Henry Mertz

Feb 04, 2026

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

I didn't think I'd find such a good lawyer in Ontario, but here we are and I am thoroughly impressed. John O'Connor is just awesome and exceeded all my expectations. No complaints at all! They really...

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Owen Grady

Feb 04, 2026

Many thanks to John O'Connor for the hard work and dedication to my legal matter

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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Leon Moen

Feb 04, 2026

So happy with the results of my case thanks to the hard work of John O'Connor and staff

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...

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Boyd McCullough

Feb 04, 2026

Many thanks to John O'Connor for the hard work and dedication to my legal matter

If you need a Tax Law lawyer, John O'Connor 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 was in...