Nicholas McIsaac
Toronto Office

Nicholas McIsaac

Nicholas is a partner at the Toronto office of Thorsteinssons.

Nicholas’ practice focuses on corporate and international tax planning, regularly advising Canadian and foreign-based multi-national groups on a variety of matters, including financing, mergers and acquisitions, restructurings and natural resource taxation. He is also experienced in handling tax controversy issues at both the federal and provincial levels.

Nicholas is an adjunct professor at Osgoode Hall Law School, teaching a course in the Taxation of Corporate Transactions.



  • Honours Bachelor of Arts, University of Toronto
  • JD, Osgoode Hall of Law School (Dean’s Letter Recognizing Cumulative Overall Excellence, prizes for the best combined marks in Commercial Law, Business Associations and Taxation Law, the Martin J. Rochwerg Prize in Tax, Estates and Trust Law, and the Ronald Robertson Q.C. Memorial Tax Prize for Tax Policy).

Professional Activities & Memberships

  • Canadian Tax Foundation
  • Ontario Bar Association
  • Canadian Bar Association
  • Law Society of Ontario