LAWYER PROFILE

Jeff Oldewening

Canada 2026

McCarthy Tétrault LLP

Ranked in 1 practice area

Tax

Nationwide - Canada

2 years ranked

About

Provided by McCarthy Tétrault LLP

Practice Areas

Jeff is a Partner in the Firm’s National Tax Group in Toronto with a practice focusing on domestic and cross-border mergers & acquisitions and reorganizations. He develops success-driven tax planning structures.

Jeff is an experienced senior tax practitioner, renowned for developing innovative tax planning structures. He has extensive experience guiding clients through complex domestic and cross-border M&A transactions, reorganizations and investments. He is one of the leading tax advisors in Canada in the area of corporate reorganizations and butterfly transactions.

Career

Ontario Bar, 2006.

Professional Memberships

He is a member of the editorial board for the International Tax Planning journal.

Publications

Jeff is a contributor to the Canadian Tax Journal.

Personal

Jeff teaches butterfly transactions at the Tax Law for Lawyers course and previously lectured on capital gains stripping at the In-Depth Tax Course for CPA Canada.

Chambers Review

Provided by Chambers

Chambers Canada Guide

Tax - Nationwide - Canada

Band 5

Individual Editorial

Jeff Oldewening boasts notable expertise advising taxpayers on the technical tax issues they face in Canada. His client base includes international corporates active in the mining and hospitality industries.

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Strengths

Provided by Chambers

He is very good at understanding our complex fact patterns quickly.
TaxChambers Canada Guide
Jeff is very technically capable and good with coming up with alternatives.
TaxChambers Canada Guide
Jeff is very thoughtful and also very technically strong.
TaxChambers Canada Guide
Jeff is extremely creative and thinks outside the box to provide solutions.
TaxChambers Canada Guide