Joanne Vandale

Joanne Vandale is a Partner in Osler’s National Tax Group with a practice focused exclusively on tax litigation and dispute resolution. With two decades of experience representing clients in complex tax matters, Joanne is widely recognized for her strategic advocacy and deep understanding of Canada’s tax landscape.

She represents clients before the Tax Court of Canada and the Federal Court of Appeal and has appeared before the Supreme Court of Canada. She guides corporations, partnerships, trusts and individuals through audits, objections, and litigation against the Canada Revenue Agency and provincial tax authorities. Her expertise spans a broad range of contentious tax issues, including the general anti-avoidance rule (GAAR), resource taxation, transfer pricing, executive compensation, and SR&ED tax credits.

Joanne is known for combining technical excellence with a practical, client-focused approach. She has acted on numerous high-profile cases and is recognized for her ability to navigate complex tax disputes. She has acted for major corporations across sectors such as energy, natural resources, agriculture, and technology.

Joanne is actively involved in the Canadian tax community. She is a past chair of the Canadian Bar Association’s Tax Specialists (South) section and a former board member of the Canadian Petroleum Tax Society. She is frequently invited to speak and write on tax controversy topics.