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Bill S. Maclagan, KC
Bill S. Maclagan, KC Senior Counsel | Vancouver

About Bill

Bill is involved in all aspects of income and commodity taxation, including goods and services tax, transfer pricing, and provincial taxation. He practises in both the taxation planning and tax litigation fields, with an emphasis on corporate taxation, in particular transactional advice, mergers and acquisitions, corporate reorganizations, structuring infrastructure projects, and public-private partnerships.

Bill has extensive experience in providing tax and structuring advice to private and public companies and investment funds in respect of shareholders agreements, partnership and limited partnership agreements, joint venture arrangements, and other complex commercial arrangements.

Bill has also had significant involvement in the mining sector, including acting on mergers and acquisitions, spin-outs, split-up transactions, metal streaming transactions, royalty transactions and financings.

Bill provides legal services through William S. Maclagan Law Corporation.

Awards & Recognition

Bill is recognized as a leading Canadian lawyer in the following publications:

  • ITR World Tax 2024 (Highly Regarded – Tax Controversy)

  • The Best Lawyers in Canada 2024 (Aboriginal Law, Employee Benefits Law, Tax Law)

  • The Lexpert/American Lawyer Guide to the Leading 500 Lawyers in Canada 2023 (Corporate Tax)

  • The Canadian Legal Lexpert Directory 2023 (Corporate Tax)

  • Who's Who Legal: Canada 2022 (Corporate Tax)

  • Who's Who Legal: Global 2022 (Corporate Tax – Controversy)

  • The 2017 Lexpert Guide to the Leading US/Canada Cross-Border Corporate Lawyers in Canada (Corporate Tax)

Professional Activities

In his areas of expertise, Bill has written extensively. He has chaired conferences on general tax and corporate matters and is a frequent lecturer at programs offered by the British Columbia Continuing Legal Education Society and others. He is also a past chairperson of the Canadian Bar Association Tax Subsection in British Columbia.

Bill is a former bencher of The Law Society of British Columbia and former chair of the Canadian Tax Foundation.

An active member of his community, Bill is also a former chair of the B.C. Sports Hall of Fame and Museum Foundation and a former member of the board of directors of the Vancouver Opera and the Washington Kids Foundation.


Admitted to the British Columbia Bar – 1987
LLB, University of British Columbia – 1986

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