Thomas Witteveen
Automatically compiled listing. Details may contain errors.Associate at Gowling WLG
- Called to the bar
- 2020
- Languages
- English
Tax LawTax LawAbout Thomas Witteveen
Individuals and the owners of family-owned and closely held businesses turn to Thomas Witteveen to plan their personal and corporate tax affairs and then put those plans into action. Witteveen is an associate in Gowling WLG's Toronto office and works as a tax lawyer in the firm's Private Client Services Group.
Tax disputes are the other side of the practice. Witteveen has acted for many different clients through audits, reassessments and appeals, and has helped taxpayers with voluntary disclosures and applications for relief.
Called to the Ontario bar in 2020, Witteveen earned a Juris Doctor at the University of Ottawa after a commerce degree at McMaster University. The career started at Robins Appleby in Toronto, first as a summer and then an articling student, followed by a move into its Tax & Estates Group as an associate before the switch to Gowling WLG.
Witteveen also writes for clients. In 2026 that included co-authoring a Gowling WLG piece on the federal Productivity Mega Deduction and an article on no-contest clauses and executor removal. Witteveen takes pride in hard work and in turning complicated tax and legal ideas into plain, straightforward explanations.
Practice areas
Personal and corporate tax planning
Designs and implements tax plans for individuals and for family-owned and closely held businesses.
Tax disputes and relief
Represents clients at the audit, reassessment and appeal stages, and helps taxpayers with voluntary disclosures and relief applications.
Education & credentials
- Juris Doctor, University of Ottawa (2019)
- Bachelor of Commerce (Hons.), McMaster University (2015)
- Called to the Bar of Ontario (2020)
Publications & speaking
- Understanding Canada's new "Productivity Mega Deduction": Broad-based, immediate, and permanent expensing, Gowling WLG (co-authored with Laura Gheorghiu and Yash Chavda) (2026)
- No-Contest Clauses and Executor Removal: Lessons from Franklin Estate (Re), 2026 NLCA 30, All About Estates (2026)
Memberships & affiliations
- Canadian Tax Foundation: Witteveen is a member.
- Canadian Bar Association: Witteveen is a member.
- Ontario Bar Association: Witteveen is a member.
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This listing was generated by AI from public sources in October 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on their firm’s website. Confirm Thomas Witteveen’s licence and standing in the Law Society of Ontario directory ↗
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