Is McCarthy Tétrault a full service business law firm?

Yes. The firm practises across business and corporate law, civil litigation and dispute resolution, tax, real estate, employment and labour law, class actions, construction, administrative and regulatory law, and technology and startups matters, among other areas.

Can McCarthy Tétrault represent a company facing a class action?

Class actions is one of the firm's listed practice areas, so it is set up to advise clients on class proceedings as well as other complex civil litigation.

Does the firm advise on technology and startup matters?

Technology and startups is one of the firm's practice areas, alongside its broader business and corporate law work.

How many lawyers work at McCarthy Tétrault?

The firm says it has more than 800 lawyers across its Canadian and international offices, with more than half of its lawyers located in Ontario.

Where is the McCarthy Tétrault Toronto office located?

The Toronto office is at 66 Wellington Street West, Suite 5300, in the TD Bank Tower, part of the Toronto-Dominion Centre in the Financial District.

McCarthy Tétrault LLP | LawOnline Directory

About McCarthy Tétrault LLP

McCarthy Tétrault LLP is a national, full service business law firm with offices in Vancouver, Calgary, Toronto, Montreal and Quebec City, plus offices in New York and London, UK. The Toronto office is in the TD Bank Tower at 66 Wellington Street West, part of the Toronto-Dominion Centre in the city's Financial District. More than half of the firm's lawyers are located in Ontario. The firm's roots trace back to an 1855 law practice founded in Barrie, Ontario, and its current form dates to a merger of regional firms based in Toronto, Montreal, Vancouver and Calgary, including Montreal's Clarkson Tétrault, which brought the Tétrault name into the firm.

The firm says it became Canada's first national law firm in 1989, expanding into multiple provinces at a time when most Canadian firms practised out of a single city. Today it counts more than 800 lawyers across its Canadian and international offices, working in business and corporate law, litigation, tax, real property, and labour and employment law, along with newer areas such as class actions, construction, and technology and startups.

Practice areas

Business & Corporate Law

Civil Litigation & Dispute Resolution

Class Actions

Real Estate Law

Tax Law

Employment & Labour Law

Technology & Startups

Administrative & Regulatory Law

Construction Law

Milestones & recognition

The firm's history traces back to an 1855 law practice, Boulton and McCarthy, founded in Barrie, Ontario.
The current firm took shape through a merger of regional firms in Toronto, Montreal, Vancouver and Calgary, including Montreal's Clarkson Tétrault, which is where the Tétrault name comes from.
The firm states it became Canada's first national law firm in 1989 through expansion into multiple provinces.
It was recognized as one of Canada's Best Diversity Employers from 2012 to the present and a Top 100 Canadian Employer from 2012 to 2023.
The firm says it was the first Canadian law firm to win a Catalyst Award, in 2025, for its work on gender equity.

In the community

The Toronto office supports the United Way Campaign and says it raises close to $500,000 annually from staff, associates, counsel and partners.
Firm wide, McCarthy Tétrault made a five year, $5 million commitment to United Way Centraide, funding programs in Vancouver, Calgary, Toronto, Montreal and Quebec City that work to remove barriers to inclusion.
Lawyers in the Toronto office take part in Pro Bono Students Canada and other pro bono work, including advocacy for unrepresented minor refugee claimants, advocacy on educational issues for children, and support for local community groups.
The firm says its lawyers hold seats on boards of directors and volunteer in their communities.

Good to know

Wheelchair accessible A calendar with a checkmark beside a clock

By appointment

Lawyers 31

This firm’s lawyers at a glance

Called to the bar: 2000–2016 · median 15 years in practice 9 of 31 lawyers
Law schools: University of Toronto (5), University of Western Ontario (4), Michigan State University College of Law, Osgoode Hall Law School, Queen's University, University of Alberta and 2 more 15 of 31 lawyers

Who handles what

The neighbourhood

The Toronto office sits in the TD Bank Tower at 66 Wellington Street West, one of the towers of the Toronto-Dominion Centre in the heart of the Financial District. The Centre was designed by modernist architect Ludwig Mies van der Rohe and is often described as a defining example of the International style in the city, its black steel and glass towers standing among the bank headquarters and trading floors that make up Toronto's downtown core. For a firm built around corporate, tax, and business litigation work, an address inside one of the country's best known bank towers puts it steps from the clients and institutions that make up much of Bay Street.

More than half of the firm's lawyers are located in Ontario, reflecting Toronto's role as one of the firm's largest offices alongside its Montreal, Vancouver, Calgary and Quebec City locations.

Frequently asked questions

Is McCarthy Tétrault a full service business law firm?: Yes. The firm practises across business and corporate law, civil litigation and dispute resolution, tax, real estate, employment and labour law, class actions, construction, administrative and regulatory law, and technology and startups matters, among other areas.
Does the Toronto office only handle work in Ontario?: No. McCarthy Tétrault is a national firm with offices in Vancouver, Calgary, Toronto, Montreal and Quebec City, plus offices in New York and London, UK, and the firm says it became Canada's first national law firm in 1989.
Can McCarthy Tétrault represent a company facing a class action?: Class actions is one of the firm's listed practice areas, so it is set up to advise clients on class proceedings as well as other complex civil litigation.
Does the firm advise on technology and startup matters?: Technology and startups is one of the firm's practice areas, alongside its broader business and corporate law work.
How many lawyers work at McCarthy Tétrault?: The firm says it has more than 800 lawyers across its Canadian and international offices, with more than half of its lawyers located in Ontario.
Where is the McCarthy Tétrault Toronto office located?: The Toronto office is at 66 Wellington Street West, Suite 5300, in the TD Bank Tower, part of the Toronto-Dominion Centre in the Financial District.

Where to find them

66 Wellington Street West, Suite 5300, TD Bank Tower, Box 48, Toronto, Ontario M5K 1E6 · 416-362-1812

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Listing compiled from the firm’s public website in August 2026. Verify licence status in the Law Society of Ontario directory ↗