Company lists · Data refreshed September 2026

Top 25 Business advisory and consulting firms based in Canada

Name: Business advisory and consulting firms based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 4,970 companies tracked

RevenueBase identified 4,970 business advisory and consulting firms headquartered in Canada as of September 2026 and tracks 27,561 professional contacts across them, including 10,055 with verified work emails and 2,142 with mobile numbers. Toronto is the largest hub.

This list covers business advisory and consulting firms headquartered in 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 23, 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 23, 2026 86% judged on-target in blind review

4,970Companies

27,561Contacts tracked

10,055Verified emails

2,142Mobile numbers

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The 25 largest business advisory and consulting firms based in Canada

Ranked by team size

Top 25 of 4,970 business advisory and consulting firms based in Canada, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to business advisory and 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	Mallette	Indirect evidence	Québec, QC, CanadaHQ checked Sep 23, 2026	1,001-5,000	1,268 contacts →
	Indirect evidence “Mallette compte plus de 40 bureaux solidement implantés dans plusieurs régions du Québec et regroupe plus de 1 600 ressources œuvrant dans différents secteurs d’activité.” Source: RevenueBase Database · checked Sep 23, 2026
2	Eckler Ltd. Eckler Ltée	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 23, 2026	201-500	396 contacts →
	Indirect evidence “At Eckler, we help organizations make confident decisions about risk and financial security.” Source: RevenueBase Database · checked Sep 23, 2026
3	The Acquisition Group	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 23, 2026	201-500	355 contacts →
	Indirect evidence “At The Acquisition Group, we believe growth starts with opportunity.” Source: RevenueBase Database · checked Sep 23, 2026
4	FBL S.E.N.C.R.L. Société DE Comptables Professionnels Agréés	Indirect evidence	Montréal, QC, CanadaHQ checked Sep 23, 2026	201-500	347 contacts →
	Indirect evidence “FBL \| SOCIÉTÉ DE COMPTABLES PROFESSIONNELS AGRÉÉS Ayant été désigné comme étant l’un des dix plus grands cabinets au Québec, FBL jouit d’une solide expertise depuis plus de 40 ans.” Source: RevenueBase Database · checked Sep 23, 2026
5	Invisor Consulting Services	Indirect evidence	Fergus, ON, CanadaHQ checked Sep 23, 2026	201-500	341 contacts →
	Indirect evidence “We are a team of accountants qualified from professional bodies across the globe who have considerable experience in finance and related digital transformation.” Source: RevenueBase Database · checked Sep 23, 2026
6	Optimus SBR	Partial evidence	Toronto, ON, CanadaHQ checked Sep 23, 2026	201-500	320 contacts →
	Partial evidence “Optimus SBR is Canada’s largest independent management consulting firm.” Source: RevenueBase Database · checked Sep 23, 2026
7	Dmcl Chartered Professional Accountants	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 23, 2026	201-500	316 contacts →
	Indirect evidence “DMCL LLP is a full-service accounting firm dedicated to helping you achieve and exceed your business goals, no matter how ambitious.” Source: RevenueBase Database · checked Sep 23, 2026
8	Manning Elliott Accountants & Business Advisors	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 23, 2026	201-500	296 contacts →
	Indirect evidence “Manning Elliott LLP is considered to be one of the most well-respected and progressive mid-sized firms in the Lower Mainland & Fraser Valley.” Source: RevenueBase Database · checked Sep 23, 2026
9	Segal Gcse LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 23, 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 23, 2026
10	Fuller Landau LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 23, 2026	51-200	192 contacts →
	Indirect evidence “Work together with people excited by your goals and eager to address your unique business needs.” Source: RevenueBase Database · checked Sep 23, 2026
11	TACT	Partial evidence	Québec, QC, CanadaHQ checked Sep 23, 2026	51-200	175 contacts →
	Partial evidence “Founded in September 2011, TACT Intelligence-conseil is composed of a group of experienced, professional communicators seeking to create a Québec-owned consulting agency.” Source: RevenueBase Database · checked Sep 23, 2026
12	BVA	Indirect evidence	Sainte-marie, QC, CanadaHQ checked Sep 23, 2026	201-500	170 contacts →
	Indirect evidence “Depuis maintenant plus de 60 ans, BVA a développé une panoplie de services axés sur les préoccupations des entrepreneurs, des professionnels et des dirigeants d’entreprises.” Source: RevenueBase Database · checked Sep 23, 2026
13	Zeifmans	Partial evidence	Toronto, ON, CanadaHQ checked Sep 23, 2026	51-200	168 contacts →
	Partial evidence “Zeifmans is a full-service tax, accounting and consulting firm based in Toronto, Canada.” Source: RevenueBase Database · checked Sep 23, 2026
14	Bcgo S.E.N.C.R.L	Indirect evidence	Montréal, QC, CanadaHQ checked Sep 23, 2026	51-200	164 contacts →
	Indirect evidence “BCGO est un cabinet indépendant d’expertise comptable et de services-conseils aux entrepreneurs.” Source: RevenueBase Database · checked Sep 23, 2026
15	Hcsc INC	Indirect evidence	Longueuil, QC, CanadaHQ checked Sep 23, 2026	n/a	164 contacts →
	Indirect evidence “Services-conseils en optimisation de processus d'affaires, comptabilité, financement, démarrage d'entreprise, implantation de logiciel de gestion intégrée et recrutement.” Source: RevenueBase Database · checked Sep 23, 2026
16	DJB Chartered Professional Accountants	Indirect evidence	St. Catharines, ON, CanadaHQ checked Sep 23, 2026	51-200	155 contacts →
	Indirect evidence “BIG ENOUGH TO KNOW.” Source: RevenueBase Database · checked Sep 23, 2026
17	Virtus Group, Chartered Professional Accountants & Business Advisors LLP	Partial evidence	Regina, SK, CanadaHQ checked Sep 23, 2026	51-200	146 contacts →
	Partial evidence “Virtus Group is the largest independent Chartered Professional Accountant and Business Advisory firm in Saskatchewan.” Source: RevenueBase Database · checked Sep 23, 2026
18	Davis Martindale LLP	Indirect evidence	London, ON, CanadaHQ checked Sep 23, 2026	51-200	122 contacts →
	Indirect evidence “At Davis Martindale, our accountants work to bring you the peace of mind you’re in search of with a touch of personality.” Source: RevenueBase Database · checked Sep 23, 2026
19	Amyot Gélinas	Indirect evidence	Ste-agathe-des-monts, QC, CanadaHQ checked Sep 23, 2026	51-200	114 contacts →
	Indirect evidence “Dès la création du cabinet Amyot Gélinas il y a maintenant plus de 30 ans, notre rêve était de grandir avec notre clientèle et de développer avec elle un partenariat fondé sur le…” Source: RevenueBase Database · checked Sep 23, 2026
20	Avail CPA	Partial evidence	Lethbridge, AB, CanadaHQ checked Sep 23, 2026	51-200	103 contacts →
	Partial evidence “Founded in 1933, Avail is now Southern Alberta's largest independently owned business advisory and accounting firm, with recent expansion into eastern BC.” Source: RevenueBase Database · checked Sep 23, 2026
21	Melo LLP	Indirect evidence	Leamington, ON, CanadaHQ checked Sep 23, 2026	51-200	103 contacts →
	Indirect evidence “With a deep affinity for progress and bold entrepreneurialism, Melo LLP is an integrated, multidisciplinary team committed to driving business sustainability and growth.” Source: RevenueBase Database · checked Sep 23, 2026
22	Gauvreau Accounting TAX LAW Advisory	Partial evidence	Peterborough, ON, CanadaHQ checked Sep 23, 2026	51-200	88 contacts →
	Partial evidence “At Gauvreau Accounting Tax Law Advisory, entrepreneurship drives everything we do.” Source: RevenueBase Database · checked Sep 23, 2026
23	Invictus Accounting Group LLP	Strong evidence	Vancouver, BC, CanadaHQ checked Sep 23, 2026	51-200	86 contacts →
	Strong evidence “Located in the heart of Downtown Vancouver, Invictus Accounting Group LLP provides consulting, accounting and tax advisory for publicly listed and privately held companies.” Source: RevenueBase Database · checked Sep 23, 2026
24	S C Partners	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 23, 2026	51-200	82 contacts →
	Partial evidence “S+C Partners has been providing professional accounting, advisory and tax services across the GTA since 1987.” Source: RevenueBase Database · checked Sep 23, 2026
25	KRP LLP	Strong evidence	Markham, ON, CanadaHQ checked Sep 23, 2026	11-50	82 contacts →
	Strong evidence “Founded in 1973, KRP LLP provides strategic tax, accounting and assurance, financial advisory and consulting and risk management services to private mid-market organizations and…” Source: RevenueBase Database · checked Sep 23, 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: business advisory and 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 business advisory and consulting firms.
Partial evidence: Its own public description names part of business advisory and consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business advisory and 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 4,970 business advisory and consulting firms based in Canada

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Business advisory and consulting firms based in Canada at a glance

As of Sep 23, 2026

36.5%Verified-email coverage

7.8%Mobile-number coverage

5.5Average contacts per company

1-10Median size (employees)

23.3%Largest-city concentration · Toronto

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

4,021

11-50

781

51-200

126

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 25.5d

7,6130–30

2,28131–60

11861–90

290–180

41180+

Company record updated

Median 78.5d

00–30

8,17531–60

11,61261–90

6,12090–180

1,654180+

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 business advisory and 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 Canada whose own description of what they do matches “business advisory and 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 business advisory and 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 business advisory and consulting firms, and records with no verified work email. Companies headquartered outside Canada 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, 10,055 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 23, 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.

Business advisory and consulting firms by metro

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 business advisory and 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 business advisory and consulting firms are there based in Canada?

RevenueBase identified 4,970 business advisory and consulting firms headquartered in 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?

Mallette, headquartered in Quebec, tops this list with the largest team on record.

Which city has the most business advisory and consulting firms?

Toronto leads with 1159 headquartered companies, followed by Montreal (463) and Vancouver (388).

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 10,055 verified decision-maker contacts tracked across these 4,970 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 23, 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.