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Tax Tax

Our team develops sophisticated solutions to our clients’ most complex and important taxation issues.

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Osler’s Tax Group is consistently recognized as a leading provider of tax law services in Canada and is ranked Band 1 by Chambers Canada, one of the leading legal directories in the world. From our offices across Canada, our tax lawyers operate as an integrated unit and in partnership with our clients to develop sophisticated solutions to our clients’ most complex and important taxation issues.

With close to 60 tax professionals, we offer our clients expert advice on a broad range of tax matters of importance to their business interests. In addition, we are pleased to share with our clients and others the benefit of our extensive experience through our Osler Updates, seminars, webinars and other client tailored programs.

Osler is a long-time sponsor of the Canadian Tax Foundation (CTF), the International Fiscal Association (IFA) and the Tax Executives Institute (TEI) in support of the professional needs of the in-house tax community and as leading sources of insight on Canadian corporate tax issues.  

Areas of Focus

Key Contacts

Co-Chair

Timothy Hughes

Partner, Tax, Toronto

Co-Chair

Edward Rowe

Partner, Tax, Calgary, Vancouver

Mark Brender

Partner, Tax, Montréal

David Jacyk

Partner, Tax, Vancouver

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Awards and Recognition

  • Chambers Canada: Canada’s Leading Lawyers for Business: Recognized in Tax (Band 1)
    • “Osler team brings a wealth of experience, and is methodical and strategic with their approach to complex and sophisticated matters.”
    • “The depth of the team is unbelievable.”
    • “Osler is technically strong. They are also commercial and will take a view supported by reasoned and principled judgement in areas with no clear answer. I am very happy with their advice.”
  • Chambers Global: The World’s Leading Lawyers for Business: Recognized in Tax (Band 1)
    • “They have an exceptionally strong team that works together seamlessly – their experience with tax and tax litigation is the best in Canada.”
  • The Legal 500: Tax Law (Tier 1)
  • International Tax Review
  • Who’s Who Legal: Osler lawyers recognized in Corporate Tax
  • Best Lawyers Canada: Recognized as “Law Firm of the Year” in the area of Tax Law (Canada), 2022

In the Media

  • Osler News April 16, 2025

    Lexpert Special Edition: Finance and M&A 2025 recognizes 44 Osler lawyers

    Osler is proud to announce that 44 of our lawyers have been recognized as leaders in the Lexpert Special Edition: Finance and M&A...

    Read more
  • Media Mentions April 9, 2025

    ‘No avenue for effective judicial oversight’ – International Tax Review

    A recent Tax Court of Canada transfer pricing (TP) decision underlines frustrations that taxpayers may face because of the split legal jurisdiction...

    Read more
  • Osler News February 20, 2025

    Osler welcomes 14 new partners and three new counsel in 2025

    Osler is pleased to announce the addition of 14 new partners and three new counsel across our offices in Toronto, Montréal, Calgary and Vancouver.

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    Osler welcomes 14 new partners and three new counsel in 2025
  • Osler News February 13, 2025

    Osler recognized as a leading firm in Chambers Global 2025 Guide

    Osler has been recognized as a leading firm in the Chambers Global 2025 Guide.

    Read more
    Osler recognized as a leading firm in Chambers Global 2025 Guide
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Osler is a leading business law firm practising internationally from offices across Canada and in New York. Our clients include industry and business leaders in all segments of the market and at various stages in the growth of their businesses. We have built our reputation on our commitment to our clients' success and the experience, expertise and collaborative approach for which we are recognized. We believe that our success is a reflection of our clients' success.