Company lists · Data refreshed September 2026

Top 25 Big 4 business consulting firms based in Toronto, Canada

Name: Big 4 business consulting firms based in Toronto, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 108 companies tracked

RevenueBase identified 108 big 4 business consulting firms headquartered in Toronto, Canada as of September 2026 and tracks 23,536 professional contacts across them, including 5,910 with verified work emails. Toronto is the largest hub.

This list covers big 4 business consulting firms headquartered in Toronto, Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

108Companies

23,536Contacts tracked

5,910Verified emails

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The 25 largest big 4 business consulting firms based in Toronto, Canada

Ranked by team size

Top 25 of 108 big 4 business consulting firms based in Toronto, Canada, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to big 4 business consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Kpmg Canada	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	10001+	10,294 contacts →
	Indirect evidence “KPMG LLP is the Canadian member firm of KPMG International.” Source: RevenueBase Database · checked Sep 21, 2026
2	PWC Canada	Indirect evidence	Toronto, CanadaHQ checked Sep 21, 2026	5,001-10,000	5,573 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026
3	BDO Canada	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1,001-5,000	4,833 contacts →
	Indirect evidence “Canada’s Top 100 Employers 2025 I 2024 I 2023 I 2022 BDO Canada LLP is a leading provider of professional services to clients across a variety of sectors and segments.” Source: RevenueBase Database · checked Sep 21, 2026
4	Optimus SBR	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	201-500	320 contacts →
	Partial evidence “Optimus SBR is Canada’s largest independent management consulting firm.” Source: RevenueBase Database · checked Sep 21, 2026
5	Crowe Soberman	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	265 contacts →
	Indirect evidence “As an award-winning public accounting firm, we provide exceptional professional service (by being accessible, responsive and proactive) to meet the special and on-going individual…” Source: RevenueBase Database · checked Sep 21, 2026
6	Segal Gcse LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	201-500	258 contacts →
	Indirect evidence “At Segal GCSE LLP, we embrace an ambitious firm philosophy: to provide our valued clients with an expansive service experience that enables greater opportunities for growth and…” Source: RevenueBase Database · checked Sep 21, 2026
7	Schwartz Levitsky Feldman LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	78 contacts →
	Indirect evidence “As a firm with over 70 years of experience, Schwartz Levitsky Feldman LLP is well equipped to offer a full range of assurance, tax and advisory services.Our people create smart…” Source: RevenueBase Database · checked Sep 21, 2026
8	Lipton LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	77 contacts →
	Indirect evidence “Quality Service.” Source: RevenueBase Database · checked Sep 21, 2026
9	Robertson & Company LTD	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	74 contacts →
	Indirect evidence “Robertson helps organizations find the talent they need to drive success, quickly and cost-effectively.” Source: RevenueBase Database · checked Sep 21, 2026
10	Adams Miles	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	63 contacts →
	Partial evidence “Adams + Miles delivers accounting, audit, assurance and strategic consulting services to clients across sectors.” Source: RevenueBase Database · checked Sep 21, 2026
11	Yale PGC LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	52 contacts →
	Indirect evidence “Yale PGC is one of the Greater Toronto Area’s most progressive and reputable mid-sized accounting, audit, taxation, and business advisory firms.” Source: RevenueBase Database · checked Sep 21, 2026
12	Rosenswig Mcrae Rosso LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	51 contacts →
	Indirect evidence “Just as you're passionate about what you do, our team is as passionate about what we do.” Source: RevenueBase Database · checked Sep 21, 2026
13	Hogg, Shain & Scheck	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	40 contacts →
	Indirect evidence “Hogg, Shain & Scheck is a boutique professional accounting firm with over 46 years of experience providing audit, tax, and advisory services to entrepreneurs, corporations, and…” Source: RevenueBase Database · checked Sep 21, 2026
14	Solutia SDO	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	34 contacts →
	Partial evidence “Solutia SDO Limited is an independent management consulting firm which began in 2003 and remains owned and operated by seasoned professionals.” Source: RevenueBase Database · checked Sep 21, 2026
15	Tator, Rose And Leong Chartered Professional Accountants	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	31 contacts →
	Indirect evidence “Tator, Rose and Leong has been providing high standard of professional services to small and medium sized business since 1974.” Source: RevenueBase Database · checked Sep 21, 2026
16	Miller Bernstein LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	29 contacts →
	Indirect evidence “Miller Bernstein LLP is a mid-sized, full-service accounting firm.” Source: RevenueBase Database · checked Sep 21, 2026
17	Barnes Management Group	Partial evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “Barnes Management Group (BMG) is a management consulting agency located in Toronto, Canada.” Source: RevenueBase Database · checked Sep 21, 2026
18	Rapkin Wein LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	22 contacts →
	Indirect evidence “Rapkin Wein LLP is a firm of professional accountants of diverse backgrounds and interests who have come together to provide personalized, pro-active, efficient and effective…” Source: RevenueBase Database · checked Sep 21, 2026
19	Cloudact CPA Professional Corporation	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	19 contacts →
	Indirect evidence “CloudAct is a cloud based trusted business advisor for thriving business.” Source: RevenueBase Database · checked Sep 21, 2026
20	Bass Murphy & Partners, Cpa, LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “Bass Murphy & Partners is an innovative and dynamic full service public accounting firm with Chartered Professional Accountants in Toronto and Uxbridge, serving a diversified…” Source: RevenueBase Database · checked Sep 21, 2026
21	Mscm LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	51-200	12 contacts →
	Indirect evidence “We have an abiding interest in two groups: those who work with us now (clients & firm members), & will in the future.” Source: RevenueBase Database · checked Sep 21, 2026
22	Rssm LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Established in 1990, our firm located at Yonge and Eglinton (midtown) has been providing our individual and business clients with a complete range of financial, accounting, audit…” Source: RevenueBase Database · checked Sep 21, 2026
23	Moses LLP Chartered Professional Accountants	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	10 contacts →
	Indirect evidence “Moses LLP, Chartered Professional Accountants is a boutique professional services firm located in mid-town Toronto that provides taxation, accounting and business advisory…” Source: RevenueBase Database · checked Sep 21, 2026
24	Yoannou & Associates Cpa's LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	1-10	8 contacts →
	Indirect evidence “Yoannou & Associates CPA's LLP is a full-service public accounting firm serving the Greater Toronto Area from our office in mid-town Toronto.” Source: RevenueBase Database · checked Sep 21, 2026
25	Cooper & Company Chartered Professional Accountants	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 21, 2026	11-50	7 contacts →
	Indirect evidence “Cooper & Co.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: big 4 business consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names big 4 business consulting firms.
Partial evidence: Its own public description names part of big 4 business consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name big 4 business consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 108 big 4 business consulting firms based in Toronto, Canada

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Big 4 business consulting firms based in Toronto, Canada at a glance

As of Sep 21, 2026

25.1%Verified-email coverage

217.9Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Toronto

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured across the whole Canada list rather than for Toronto, so it is reported there. Company counts and contact totals on this page are exact for Toronto, over 108 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among big 4 business consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Toronto, Canada whose own description of what they do matches “big 4 business consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names big 4 business consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among big 4 business consulting firms, and records with no verified work email. Companies headquartered outside Toronto are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 5,910 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Big 4 business consulting firms by metro in Canada

Big 4 business consulting firms in Toronto108
Big 4 business consulting firms in Vancouver50
Big 4 business consulting firms in Montreal38
Big 4 business consulting firms in Ottawa37
Big 4 business consulting firms in Calgary34

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names big 4 business consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many big 4 business consulting firms are there based in Toronto, Canada?

RevenueBase identified 108 big 4 business consulting firms headquartered in Toronto, Canada as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Kpmg Canada, headquartered in Toronto, tops this list with the largest team on record.

Which city has the most big 4 business consulting firms?

Toronto leads with 108 headquartered companies, followed by Vancouver (50) and Montreal (38).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 5,910 verified decision-maker contacts tracked across these 108 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.