Regan A. O'Neil

Partner

Calgary

Office

403.298.2452

[email protected]

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Industries & Expertise

Biography

BAR ADMISSION

Alberta, 2008

Education

LL.B., Dalhousie University, 2007
Bachelor of Commerce, Dalhousie University, 2003

Languages Spoken

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Regan O’Neil is a tax and transactional lawyer who advises public and private companies on domestic and international tax matters, mergers and acquisitions, corporate restructurings, and cross-border investments. He has extensive experience leading buy-side and sell-side transactions and multidisciplinary teams.

Industry involvement

Recognition

The Canadian Legal Lexpert Directory, Corporate Tax, 2025

Calgary Chamber of Commerce, Ian Anderson, Committee Chair of the Year Award, 2016
In Depth Tax Course, Part III, Chartered Professional Accountants, Canada, 2014
In Depth Tax Course, Part II, Chartered Professional Accountants, Canada, 2013
In Depth Tax Course, Part I, Chartered Professional Accountants, Canada, 2012

Thought leadership

Co-author, “Have losses? Plan so that you can use them!,” Wealth Matters, April 14, 2020
Chief Editor, Miller Thomson Tax Notes, 2016
Author, “Planning To Sell Goodwill – Tax Implications of the 2016 Federal Budget,” Tax Notes, May 20, 2016
Co-author, “Federal Budget Review,” Miller Thomson Communiques, 2016
Co-author, Miller Thomson on Estate Planning, 2016
Co-author, “Tax on corporate transactions in Canada,” chapter in Tax on Transactions Multi-jurisdictional Guide, Practical Law, Thomson Reuters, 2015
Author, “Income Splitting via Loans—Prescribed Interest Rate to Increase Soon,” Miller Thomson Insights, 2013
Co-author, “2013 Provincial Budget Highlights,” Tax Notes, August 2013
Co-author, “Federal Budget Review,” Miller Thomson Communiques, 2013
Co-author, “Beneficial Ownership Test For Tax Treaty Benefit Entitlement,” Tax Notes, November 2012

Notable matters

Acted for the majority shareholders in a sale of shares of a private corporation involved in the oil and gas and construction industries, with an approximate value of $30,000,000.
Acted for the minority shareholders in the sale of shares of a private oil and gas services corporation, with an approximate value of $170,000,000
Acted for the principal sellers in a hybrid share and asset sale transaction in connection with the sale of an oil and gas services corporation, with an approximate value of $42,000,000

Memberships & affiliations

Member, Law Society of Alberta
Member, Canadian Bar Association
Member, Calgary Chamber of Commerce
Member, Canadian Tax Foundation

Regan A. O'Neil

Industries & Expertise

EXPERTISE

Biography

BAR ADMISSION

Education

Languages Spoken

Biography description

Deals & cases

Alpha Lithium closes oversubscribed $25 million bought deal offering

Western Metallica closes subscription receipt offering

Insights

2025 Canada Federal Budget: A summary of key tax proposals

Foreign entity classification for Canadian income tax purposes: Canada Revenue Agency’s recent...

2024 Canada Federal Budget – Government Focus on Personal Tax Measures

The stated policy objectives of the new 2% tax on equity repurchases

News

Miller Thomson lawyers honoured in 2025 Lexpert ranking of Canada’s leading legal professionals

Industry involvement

Recognition

Thought leadership

Notable matters

Memberships & affiliations

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