Mark Tonkovich’s practice focuses exclusively on resolving tax disputes. He represents many of Canada’s and the world’s largest and most sophisticated businesses in tax-related civil litigation, administrative appeals, audit defence, and in proactively managing tax dispute risks. Mark has successfully acted for taxpayers at all levels of court, with the Federal Court of Appeal describing his work as "exemplary" in a 2013 judicial review application. He draws on Blakes' top-tier national tax practice to develop and execute comprehensive and practical strategies for resolving tax disputes as efficiently and favourably as possible.
Mark frequently writes and presents on tax issues, and he is a member of numerous professional organizations. He has written dozens of articles on Canadian tax matters, including in the peer-reviewed Canadian Tax Journal and the National Journal of Constitutional Law. He is a member of the Tax Court Bench and Bar Committee, the editorial board of the journal Tax Litigation, the board of the Toronto Centre CRA & Tax Professionals Group, and he has appeared as an invited witness before the House of Commons Finance Committee. He previously served as an appellate judicial clerk and was a tax litigator with the Department of Justice.