Thang Tax Law
Automatically compiled listing. Details may contain errors.1 lawyer · City of Toronto
One of 2,273 law firms listed in Toronto, and one of 66 handling Tax Law.
About Thang Tax Law
Thang Tax Law Professional Corporation is a small Toronto tax law firm led by principal Simon Thang, who holds an LL.B from Osgoode Hall Law School and an LL.M in Taxation from the London School of Economics and Political Science. Thang has over 15 years of experience focused exclusively on sales taxes, including GST/HST and provincial sales taxes, and is a member of the GST Leaders Forum, a group of 25 sales tax practitioners from across Canada. The firm is also preferred counsel for the Lawyers' Professional Indemnity Company (LawPro).
The practice covers GST/HST and sales tax, tax audits and assessments, tax appeals, and customs and trade, serving individuals, businesses, and multinationals as well as accountants and other lawyers who need specialized commodity tax support. Clients include real estate professionals, e-commerce businesses, and importers and exporters navigating CBSA disputes. Thang Tax Law was included in the inaugural 2025 edition of Best Law Firms - Canada for tax law, and Simon Thang was selected for the 19th edition of The Best Lawyers in Canada for tax law expertise.
Practice areas
In the community
- Thang has taught consumption tax law as adjunct faculty at Osgoode Hall Law School and tutors the GST/HST In-Depth course for Chartered Professional Accountants.
- Thang has spoken twice at the Law Society of Ontario's Real Estate Law Summit on GST/HST issues affecting real property, including a 2021 session on rebates, exemptions and self-assessments delivered by webcast to over 1,000 lawyers.
- Thang is a frequent speaker at the CPA Commodity Tax Symposium and the Tax Executives Institute's Canadian Tax Conference, and has published book chapters, papers and articles through the Canadian Tax Foundation.
- The firm publishes a tax blog covering GST/HST and sales tax developments, including topics like e-commerce registration requirements and Ontario's non-resident speculation tax.
Good to know
Accessible parking
By appointmentLawyers 1
Where to find them
18 King Street East, Suite 1400, Toronto, ON M5C 1C4 · 416-601-1645
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Notary & Commissioner ServicesThis listing was generated by AI from public sources in August 2026. It may contain errors, and we can’t guarantee it’s accurate or complete. Before you rely on anything here, verify it on the firm’s own website. Verify licence status in the Law Society of Ontario directory ↗
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