Atty. David Thomas SC

Atty. David Thomas SC

David Thomas SC appears across Australia in a broad range of commercial and civil matters. He has a particular interest in class actions, regulatory, revenue and constitutional law.

Call (914) 686-1500 Book Appointment

Class Action Litigation & More Attorney

Profile Summary

About David Thomas SC at a Glance

David Thomas SC is a business, tax, class action, and litigation attorney, practicing at Sixth Floor Selborne Wentworth Chambers. Recognitions include Best Lawyers in America — Class Action Litigation (2027), Best Lawyers in America — Commercial Law (2027), and Best Lawyers in America — Litigation (2027). Serves clients in Sydney and the surrounding metropolitan area.

Verified attorney profile · Updated October 2026

About David Thomas SC

  • David Thomas SC appears across Australia in a broad range of commercial and civil matters
  • He has a particular interest in class actions, regulatory, revenue and constitutional law
  • David appears at both trial and on appeal, including in the High Court
  • Commercial and corporate law: Recent clients include HSBC on appeal in the Dick Smith litigation, IAL in the Greensill disputes, Channel Seven in claims against Cricket Australia, the Rinehart children in litigation against Gina Rinehart, NAB in proceedings concerning the Bank Bill Swap Rate and Brickworks in a landmark oppression action
  • Class actions: Clients include National Australia Bank, Westpac, RBS, Suncorp, NULIS, Star Entertainment, Multiplex and subsidiaries of BHP
  • David has been appointed amicus by the Federal Court and NSW Supreme Court to provide submissions in novel matters
  • Regulatory and civil penalty:David regularly acts for companies and individuals in proceedings brought by ASIC
  • Recent clients include Macquarie Bank, Westpac, Rio Tinto, MLC Nominees, NAB and MLC Insurance
  • David has also acted for ASIC and the ACCC respectively in High Court appeals concerning the operation of the MIS and cartel regimes
  • David represented NAB in the Banking Royal Commission
  • Revenue law: David appears for both taxpayers and the Commissioner
  • Recent matters have involved Crown, Tabcorp, Tatts and Uber
  • David has also appeared for the Commissioner in High Court appeals concerning franking credits and charitable trusts, and for high net-worth individuals in income and tax residency matters
  • Constitutional law: Notable matters include High Court challenges to the mining tax, carbon tax and the reform of parliamentary pension entitlements
  • He recently appeared in the first High Court challenge under s 90 of the Constitution since Ha
  • David has been recognized as a leading silk in a range of professional publications, including Chambers & Partners (Commercial Disputes), Doyle’s Guide (Commercial Disputes, Class Actions and Taxation), Best Lawyers in Australia (Commercial Disputes and Class Actions), Legal 500 and Lexology (formerly Who’s Who Legal)
  • David was awarded University Medals in both Law and History at the University of Sydney
  • David subsequently received a BCL (with Distinction) from the University of Oxford, while holding the Menzies Memorial Scholarship in Law
  • Prior to coming to the Bar, David was Associate to Justice Gummow at the High Court of Australia and a solicitor at Mallesons Stephen Jaques (now King & Wood Mallesons)

Practice Areas Explained

David Thomas SC's Areas of Legal Practice

Each practice area below reflects the types of cases David Thomas SC handles, with a practical overview of what that area of law involves and how it may apply to your situation in Sydney.

Business & Corporate Law in Sydney

Business attorneys advise founders and growing companies on entity formation, contracts, financing, M&A, and dispute resolution.

David Thomas SC is one of 497,491 business attorneys indexed nationally. Browse business attorneys →

Tax Law in Sydney

Tax attorneys handle IRS audits, tax debt, international tax, estate planning, and tax court litigation.

David Thomas SC is one of 84,606 tax attorneys indexed nationally. Browse tax attorneys →

Class Action in Sydney

David Thomas SC is one of 26,226 class action attorneys indexed nationally. Browse class action attorneys →

Civil Litigation in Sydney

Civil litigation attorneys for breach of contract, business disputes, civil rights, and class action lawsuits.

David Thomas SC is one of 450,750 litigation attorneys indexed nationally. Browse litigation attorneys →

Frequently Asked

Common Questions About David Thomas SC

Where is David Thomas SC's law office located?
David Thomas SC's law practice is located in Sydney. The firm is Sixth Floor Selborne Wentworth Chambers. You can contact the office directly through this profile page.
What practice areas does David Thomas SC handle?
David Thomas SC focuses on business, tax, class action, litigation. Each practice area listed reflects experience handling cases of that type in their licensed jurisdictions.
How can I contact David Thomas SC for a consultation?
You can contact David Thomas SC directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.
What awards or recognition has David Thomas SC received?
David Thomas SC's notable recognition includes: Best Lawyers in America — Class Action Litigation; Best Lawyers in America — Commercial Law; Best Lawyers in America — Litigation; Best Lawyers in America — Tax Law; Lawyer of the Year — Class Action Litigation, Sydney (Australia).

Professional Profile

Why Clients in Sydney Choose David Thomas SC

Selecting an attorney is one of the most consequential decisions you can make when a legal matter arises. Below are the core qualities that distinguish David Thomas SC's practice in the field of business, tax, class action, and litigation.

Broad Practice Area Coverage

Covering business, tax, and class action, David Thomas SC can address the full spectrum of a client's legal needs without requiring referrals to separate specialists for each issue.

Local Presence in Sydney

A Sydney-based practice means David Thomas SC attends hearings in the same courthouses, knows the local clerks, and understands the unwritten scheduling norms that affect every case filed here.

Case Types

Common Legal Issues David Thomas SC Handles in Sydney

Below is a representative sample of the types of matters David Thomas SC has experience with. If your situation involves one of these case categories, this attorney may be well positioned to help you understand your options.

Business formation and structure
Business
Contract drafting and review
Business
Partnership disputes
Business
Merger and acquisition support
Business
IRS audit representation
Tax
Tax lien and levy defense
Tax
Offer in compromise
Tax
Business tax planning
Tax

This list is illustrative, not exhaustive. Contact David Thomas SC directly to discuss the specifics of your situation.

Search Reference

How People Find David Thomas SC Online

Prospective clients searching for legal help in Sydney commonly use a combination of the attorney's name and their specific legal need. The following search terms frequently lead people to this profile and to attorneys like David Thomas SC.

David Thomas SC attorney David Thomas SC lawyer David Thomas SC Sydney David Thomas SC reviews David Thomas SC contact Sixth Floor Selborne Wentworth Chambers law firm business attorney in Sydney business lawyer Sydney best business attorney Sydney top rated business lawyer near me find a lawyer near me how to hire an attorney

If any of the above matches what you searched for, you've found the right profile. Use the contact options at the top of this page to get in touch with David Thomas SC directly.

David Thomas SC's Practice Areas & Specializations

Awards & Professional Honors

Best Lawyers in America — Class Action Litigation
- 2027
Best Lawyers in America — Commercial Law
- 2027
Best Lawyers in America — Litigation
- 2027
Best Lawyers in America — Tax Law
- 2027
Lawyer of the Year — Class Action Litigation, Sydney (Australia)
- 2026
Lawyer of the Year — Class Action Litigation, Sydney (Australia)
- 2022

Client Reviews & Ratings — David Thomas SC

These reviews belong to platform users; they do not constitute advertisement or promotion for the attorney. Opinions are published for informational purposes only.

No reviews yet.