As trade tensions between Canada and the United States intensify, Alberta faces a critical constitutional question: can Ottawa impose federal export taxes on Alberta oil and gas?
The answer, according to legal scholars and Alberta's political leadership, is a resounding no.
Recent media coverage suggested that Prime Minister Mark Carney is considering export taxes on Alberta energy as a retaliatory measure against U.S. President Donald Trump's tariffs. However, Alberta's legal experts say such a move would violate fundamental constitutional protections that have been tested and upheld in Canadian courts.
Constitutional Protection: The Law is Clear
While the federal government does possess broad powers under Section 91 of the Canadian Constitution to regulate interprovincial and international trade, those powers have strict limits. Section 109 explicitly reserves to the provinces ownership of "all land, mines, minerals and royalties." More critically, Section 125 states that "no lands or property belonging to Canada or any province shall be liable to taxation."
Canadian courts have consistently ruled that Section 125 takes precedence over federal taxation powers when it comes to provincial resources.
History Repeating: The NEP Lesson
This constitutional clash echoes a bitter episode from four decades ago. In 1981, former Prime Minister Pierre Trudeau attempted to impose export taxes on Alberta oil and gas as part of his controversial National Energy Program (NEP). Then-Premier Peter Lougheed fiercely resisted, calling the tax "tantamount to a declaration of war" and challenging its constitutional validity in court.
The Alberta Court of Appeal ruled unanimously in 1981 that the federal export tax was illegal—an unconstitutional tax on Government of Alberta property. That precedent remains binding law.
The Practical Path Forward
To maintain this constitutional protection, the critical requirement is that Alberta must retain legal ownership of the resource up until the point of export. The Alberta Petroleum Marketing Commission, tasked with maximizing the value of Crown resources, already manages some of Alberta's oil and gas sales on the open market—a model that preserves provincial ownership and constitutional standing.
As Canadian trade negotiations with the United States continue to dominate headlines, Alberta's constitutional position on energy exports remains secure. Any federal attempt to impose unilateral export taxes would face immediate legal challenges and almost certain defeat in court.
For Albertans concerned about the energy sector's future, the constitutional protections are clear. The question now is whether Ottawa will respect 45 years of legal precedent.
This article is based on analysis originally published by the Calgary Herald.