Company lists · Data refreshed September 2026

Top 25 Business accounting firms based in Canada

Name: Business accounting 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 4,001 companies tracked

RevenueBase identified 4,001 business accounting firms headquartered in Canada as of September 2026 and tracks 38,023 professional contacts across them, including 18,301 with verified work emails and 1,936 with mobile numbers. Toronto is the largest hub.

This list covers business accounting 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

4,001Companies

38,023Contacts tracked

18,301Verified emails

1,936Mobile numbers

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The 25 largest business accounting firms based in Canada

Ranked by team size

Top 25 of 4,001 business accounting 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 accounting 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	MNP	Strong evidence	Calgary, AB, CanadaHQ checked Sep 23, 2026	5,001-10,000	8,773 contacts →
	Strong evidence “MNP is a leading national accounting, tax and business consulting firm in Canada.” Source: RevenueBase Database · checked Sep 23, 2026
2	BDO Canada	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 23, 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 23, 2026
3	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
4	RSM Canada	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 23, 2026	10001+	897 contacts →
	Indirect evidence “RSM Canada is a leading global provider of assurance, tax, and consulting services, and is the Canadian member firm of RSM International.” Source: RevenueBase Database · checked Sep 23, 2026
5	Crowe Mackay LLP	Indirect evidence	Vancouver, BC, CanadaHQ checked Sep 23, 2026	201-500	402 contacts →
	Indirect evidence “Crowe MacKay LLP is a vibrant team of trusted advisors in eight cities across western and northern Canada.” Source: RevenueBase Database · checked Sep 23, 2026
6	Welch LLP	Strong evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	201-500	399 contacts →
	Strong evidence “Welch LLP is a Chartered Public Accounting firm that has deep roots in the communities it serves.” Source: RevenueBase Database · checked Sep 23, 2026
7	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
8	Demers Beaulne LLP	Indirect evidence	Montréal, QC, CanadaHQ checked Sep 23, 2026	201-500	317 contacts →
	Indirect evidence “Demers Beaulne LLP is a chartered accountants firm.” Source: RevenueBase Database · checked Sep 23, 2026
9	Dmcl Chartered Professional Accountants	Strong evidence	Vancouver, BC, CanadaHQ checked Sep 23, 2026	201-500	316 contacts →
	Strong 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
10	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
11	Groupe RDL	Indirect evidence	Victoriaville, QC, CanadaHQ checked Sep 23, 2026	201-500	285 contacts →
	Indirect evidence “Votre réseau québécois d’experts comptables!” Source: RevenueBase Database · checked Sep 23, 2026
12	Crowe Soberman	Strong evidence	Toronto, ON, CanadaHQ checked Sep 23, 2026	51-200	265 contacts →
	Strong 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 23, 2026
13	FBC Farm And Small Business TAX Consultants	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 23, 2026	201-500	260 contacts →
	Indirect evidence “For more than 70 years, our focus has always been to bring financial peace of mind to our Canadian business owners.” Source: RevenueBase Database · checked Sep 23, 2026
14	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
15	RLB LLP	Indirect evidence	Guelph, ON, CanadaHQ checked Sep 23, 2026	51-200	230 contacts →
	Indirect evidence “We know the relationship between a business owner and their accountant is a critical one and we would like to give you a sense of who we are and what we are all about.” Source: RevenueBase Database · checked Sep 23, 2026
16	Collins Barrow	Strong evidence	Waterloo, ON, CanadaHQ checked Sep 23, 2026	1,001-5,000	228 contacts →
	Strong evidence “Recognized as Canada’s mid-market leader for audit, tax and advisory solutions, our association of 24 independent member firms comprises the eighth largest public accounting group…” Source: RevenueBase Database · checked Sep 23, 2026
17	Kingston Ross Pasnak LLP	Indirect evidence	Edmonton, AB, CanadaHQ checked Sep 23, 2026	51-200	218 contacts →
	Indirect evidence “Kingston Ross Pasnak offers an array of comprehensive services through our highly skilled professionals.” Source: RevenueBase Database · checked Sep 23, 2026
18	HNA S.E.N.C.R.L	Strong evidence	Anjou, QC, CanadaHQ checked Sep 23, 2026	51-200	206 contacts →
	Strong evidence “HNA LLP is a multidisciplinary accounting firm that is among the 20 largest players in Quebec.” Source: RevenueBase Database · checked Sep 23, 2026
19	PSB Boisjoli	Indirect evidence	Montreal, QC, CanadaHQ checked Sep 23, 2026	51-200	206 contacts →
	Indirect evidence “Basé à Montréal, PSB BOISJOLI S.E.N.C.R.L.” Source: RevenueBase Database · checked Sep 23, 2026
20	Smythe LLP	Strong evidence	Vancouver, BC, CanadaHQ checked Sep 23, 2026	201-500	199 contacts →
	Strong evidence “Smythe is a BC-based accounting firm recognized for exceptional work in the areas of assurance, taxation and business advisory services for private and public companies…” Source: RevenueBase Database · checked Sep 23, 2026
21	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
22	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
23	Zeifmans	Strong evidence	Toronto, ON, CanadaHQ checked Sep 23, 2026	51-200	168 contacts →
	Strong evidence “Zeifmans is a full-service tax, accounting and consulting firm based in Toronto, Canada.” Source: RevenueBase Database · checked Sep 23, 2026
24	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
25	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

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 accounting 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 accounting firms.
Partial evidence: Its own public description names part of business accounting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business accounting 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 4,001 business accounting firms based in Canada

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Business accounting firms based in Canada at a glance

As of Sep 23, 2026

48.1%Verified-email coverage

5.1%Mobile-number coverage

9.5Average contacts per company

1-10Median size (employees)

10.8%Largest-city concentration · Toronto

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

3,027

11-50

847

51-200

139

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 25.0d

17,1870–30

5,17431–60

30661–90

690–180

115180+

Company record updated

Median 79.0d

00–30

13,25331–60

22,22061–90

9,42890–180

3,388180+

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 accounting 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 accounting 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 accounting 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 accounting 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, 18,301 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 accounting 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 accounting 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 accounting firms are there based in Canada?

RevenueBase identified 4,001 business accounting 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?

MNP, headquartered in Calgary, tops this list with the largest team on record.

Which city has the most business accounting firms?

Toronto leads with 431 headquartered companies, followed by Calgary (259) and Montreal (202).

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 18,301 verified decision-maker contacts tracked across these 4,001 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.