John O'Connor, Tax Attorney in the United States
Over 18 years of legal practice · focused on Tax and Tax Litigation
AssociateatStikeman Elliott LLP
Practicing tax since 2008.
- 18+
- Years practicing
- 1
- Bar admission
Practices in
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Quick answer
John O'Connor is an associate based in Toronto, ON. The practice focuses on Tax and Tax Litigation. John has over 18 years of legal experience. Currently practicing at Stikeman Elliott LLP.
- Based in
- Toronto, ON
- Experience
- over 18 years
- Known for
- Tax · Tax Litigation
- Handles Tax and Tax Litigation matters from Toronto, ON.
- Over 18 years of practice as a licensed attorney.
About John O'Connor: John O'Connor is an associate based in Toronto, ON. The practice focuses on Tax and Tax Litigation. John has over 18 years of legal experience. Currently practicing at Stikeman Elliott LLP.
Areas of practice
John's practice areas in the U.S.
John concentrates on tax and tax litigation. Each area below outlines the kind of case John handles, typical outcomes to expect, and how the intake process starts.
Tax cases nationwide
John takes tax matters nationwide. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
Tax Litigation cases nationwide
John takes tax litigation matters nationwide. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before John agrees to represent you.
Biography
John O'Connor, tax attorney serving the U.S.
John O'Connor is an associate based in Toronto, ON. The practice focuses on Tax and Tax Litigation. John has over 18 years of legal experience. Currently practicing at Stikeman Elliott LLP. John works from the U.S. and takes on tax matters across the region.
John O'Connor is a lawyer practicing tax litigation, tax law. John received a B.A. degree from University of Toronto in 2004, and has been licensed for 18 years. John practices at Stikeman Elliott LLP in Toronto, ON.
John's approach to tax cases
John O'Connor is a lawyer practicing tax litigation, tax law. John received a B.A. degree from University of Toronto in 2004, and has been licensed for 18 years. John practices at Stikeman Elliott LLP in Toronto, ON.
Clients John works with
John reviews new inquiries case-by-case for tax and tax litigation matters in the United States.
Credentials
Credentials — where John studied and practices
Osgoode Hall Law School
LL.B. · 2007
University of Toronto
B.A. Hons. · 2004
Jurisdictions
John's state bar admissions
Ontario
2008 · ACTIVE
John studied at LL.B. in Osgoode Hall Law School and B.A. Hons. in University of Toronto.
Law school and academic background
John completed LL.B. in Osgoode Hall Law School and B.A. Hons. in University of Toronto. Formal legal training is one signal of substantive knowledge — the day-to-day practice John runs in the state is where that training gets applied to real client questions.
Affiliations
John's professional memberships and bar associations
Canadian Bar Association Law Society of Upper Canada Canadian Tax Foundation
membership
Locations
John O'Connor's office in Toronto
John's primary office is at 5300 Commerce Court West, 199 Bay Street, Toronto, ON, M5L 1B9. In-person meetings are by appointment; a phone intake usually comes first.
Stikeman Elliott LLP
5300 Commerce Court West, 199 Bay Street
Toronto, ON M5L 1B9
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Schedule your consultationHiring guide
How to hire John O'Connor — what to expect in your first consultation
Working with a new tax attorney should feel structured. Here's how the first two conversations with John usually go, from the moment you request a consult to the day representation begins.
Consultation formats and pricing
John charges for the initial consult. That fee is credited toward representation if you retain John's office.
What to bring to your first meeting
Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; John will tell you what matters and what doesn't.
Questions to ask a tax attorney in your state
A short list to run through before you commit: How many tax matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?
Fees & payment
Fees, payment methods, and consultation options for John
John discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in tax practice — ask which fits.
Hourly rates, contingency fees, and flat-fee options
Every tax matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. John confirms the model in the engagement letter before any work starts.
Payment methods and payment plans
John's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many tax practices work with clients on structured schedules.
Frequently asked
Frequently asked questions about John O'Connor
How much does it cost to hire John for a tax case?
Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. John walks through the likely range during the consult so there are no surprises.
Does John offer a free consultation?
John charges for the initial consult; that fee is credited toward representation if you retain John's office. Some tax attorneys offer free consults — check John's current terms during booking.
How long do tax cases in this state typically take?
Simple tax matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. John gives a realistic estimate for your facts at the consult — vague answers here are a red flag.
Can John take my case if I'm outside the area?
John evaluates matters case by case. If the venue is outside John's regular jurisdictions, the intake call will confirm whether direct representation or a referral makes more sense.
What should I bring to my first meeting with John?
Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. John will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.
Is John accepting new tax clients right now?
John's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.