Company lists · Data refreshed September 2026

Top 25 Corporate tax firms based in Canada

Name: Corporate tax firms based in Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 1,024 companies tracked

RevenueBase identified 1,024 corporate tax firms headquartered in Canada as of September 2026 and tracks 6,565 professional contacts across them, including 2,700 with verified work emails. Toronto is the largest hub.

This list covers corporate tax 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 19, 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 19, 2026 86% judged on-target in blind review

1,024Companies

6,565Contacts tracked

2,700Verified emails

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The 25 largest corporate tax firms based in Canada

Ranked by team size

Top 25 of 1,024 corporate tax firms based in Canada, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to corporate tax 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	H&r Block Canada	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	5,001-10,000	889 contacts →
	Partial evidence “We’re Canada’s leading tax preparation firm for over 60 years – delivering value to Canadians by our expertise and knowledge in handling all tax situations and by our commitment…” Source: RevenueBase Database · checked Sep 19, 2026
2	FBC Farm And Small Business TAX Consultants	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 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 19, 2026
3	Zeifmans	Partial evidence	Toronto, ON, CanadaHQ checked Sep 19, 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 19, 2026
4	Trowbridge Professional Corporation	Strong evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	51-200	161 contacts →
	Strong evidence “Trowbridge Professional Corporation is a long established global accounting firm that provides a wide range of personal and corporate tax services, specializing in international…” Source: RevenueBase Database · checked Sep 19, 2026
5	Marcil Lavallée	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	51-200	109 contacts →
	Indirect evidence “Marcil Lavallée est un partenaire engagé qui contribue activement à la réussite de ses clients en anticipant leurs besoins et en leur offrant une gamme complète de solutions…” Source: RevenueBase Database · checked Sep 19, 2026
6	Thorsteinssons TAX Lawyers	Partial evidence	Vancouver, BC, CanadaHQ checked Sep 19, 2026	51-200	106 contacts →
	Partial evidence “Thorsteinssons is the largest Canadian law firm practicing exclusively in Tax.” Source: RevenueBase Database · checked Sep 19, 2026
7	Ggfl LLP	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	51-200	94 contacts →
	Partial evidence “GGFL is the tax planning and accounting firm for Ottawa’s successful business people.” Source: RevenueBase Database · checked Sep 19, 2026
8	Moodys Private Client	Partial evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	11-50	89 contacts →
	Partial evidence “Moodys Private Client is the home of Moodys Tax Law, Moodys Private Client Law, and Moodys Private Client Accounting.” Source: RevenueBase Database · checked Sep 19, 2026
9	S C Partners	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 19, 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 19, 2026
10	Baker Tilly Ottawa LLP	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 19, 2026	51-200	80 contacts →
	Partial evidence “At Baker Tilly Ottawa LLP, we provide expert tax, assurance, and entrepreneurial services to help your business grow and prosper.” Source: RevenueBase Database · checked Sep 19, 2026
11	Clearline CPA	Indirect evidence	Surrey, BC, CanadaHQ checked Sep 19, 2026	51-200	78 contacts →
	Indirect evidence “Clearline Chartered Professional Accountants is an accounting firm based in Vancouver, Surrey and the Tri-Cities and is dedicated to bringing clarity, strategy and confidence to…” Source: RevenueBase Database · checked Sep 19, 2026
12	Lipton LLP	Indirect evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	51-200	77 contacts →
	Indirect evidence “Quality Service.” Source: RevenueBase Database · checked Sep 19, 2026
13	Kenway Mack Slusarchuk Stewart LLP	Indirect evidence	Calgary, AB, CanadaHQ checked Sep 19, 2026	51-200	71 contacts →
	Indirect evidence “At KMSS we strive to provide an extraordinary experience.” Source: RevenueBase Database · checked Sep 19, 2026
14	Felesky Flynn LLP	Partial evidence	Edmonton, AB, CanadaHQ checked Sep 19, 2026	51-200	70 contacts →
	Partial evidence “With offices in Calgary, Edmonton and Saskatoon, Felesky Flynn LLP provides Canadian and international tax planning, tax representation and litigation, and wills and estates…” Source: RevenueBase Database · checked Sep 19, 2026
15	SRJ Chartered Professional Accountants Canada	Partial evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	51-200	58 contacts →
	Partial evidence “SRJ Chartered Accountants is a cloud based Canadian full-service tax and accounting firm located in the heart of downtown Toronto, Mississauga and Oakville.” Source: RevenueBase Database · checked Sep 19, 2026
16	Horizon Chartered Professional Accountants	Indirect evidence	Vancouver, CanadaHQ checked Sep 19, 2026	11-50	56 contacts →
	Indirect evidence “At Horizon Chartered Professional Accountants we know that financial success is achieved by more than careful planning and experienced decision-making: it is realized through a…” Source: RevenueBase Database · checked Sep 19, 2026
17	Romanovsky & Associates LLP	Indirect evidence	Edmonton & Toronto, CanadaHQ checked Sep 19, 2026	11-50	53 contacts →
	Indirect evidence “At Romanovsky and Associates we are committed to providing high quality services that are needed in today's competitive market place.” Source: RevenueBase Database · checked Sep 19, 2026
18	Cfla S.E.N.C.R.L. LLP	Partial evidence	Brossard, QC, CanadaHQ checked Sep 19, 2026	51-200	51 contacts →
	Partial evidence “Services * Expansion américaine et/ou internationale;* Conformité fiscale américaine (corporative);* Conformité fiscale américaine (individu);* « Snowbirds » et immobilier…” Source: RevenueBase Database · checked Sep 19, 2026
19	Hutcheson & CO CPA LLP	Indirect evidence	Victoria, BC, CanadaHQ checked Sep 19, 2026	11-50	49 contacts →
	Indirect evidence “Since 1987, Hutcheson & Co.” Source: RevenueBase Database · checked Sep 19, 2026
20	Cadesky TAX	Partial evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	41 contacts →
	Partial evidence “Cadesky Tax is an independent tax consulting firm.” Source: RevenueBase Database · checked Sep 19, 2026
21	Baker Tilly Victoria LTD	Indirect evidence	Victoria, BC, CanadaHQ checked Sep 19, 2026	51-200	34 contacts →
	Indirect evidence “Baker Tilly Victoria Ltd, Chartered Accountants, is a full service accounting firm situated in Victoria, Canada.” Source: RevenueBase Database · checked Sep 19, 2026
22	Chaggares & Bonhomme, Cpas	Indirect evidence	Newmarket, ON, CanadaHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “We understand business.” Source: RevenueBase Database · checked Sep 19, 2026
23	Rosen & Associates TAX LAW	Partial evidence	Toronto, ON, CanadaHQ checked Sep 19, 2026	11-50	33 contacts →
	Partial evidence “Rosen & Associates Tax Law (“R&A Tax Law) is a national tax law firm based in Toronto, Ontario.” Source: RevenueBase Database · checked Sep 19, 2026
24	Schibli Stedman King	Partial evidence	Victoria, BC, CanadaHQ checked Sep 19, 2026	11-50	32 contacts →
	Partial evidence “Founded in 1976, we have evolved into a comprehensive, multifaceted chartered professional accounting firm recognized in Victoria for our highly customized approach to tax and…” Source: RevenueBase Database · checked Sep 19, 2026
25	Powell Jones LLP	Indirect evidence	Barrie, ON, CanadaHQ checked Sep 19, 2026	11-50	31 contacts →
	Indirect evidence “Founded in 1952, Powell Jones LLP is an independent locally based accounting firm that has been serving individuals and businesses throughout Barrie and Simcoe County for over 65…” Source: RevenueBase Database · checked Sep 19, 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: corporate tax 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 corporate tax firms.
Partial evidence: Its own public description names part of corporate tax firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name corporate tax 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 1,024 corporate tax firms based in Canada

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Corporate tax firms based in Canada at a glance

As of Sep 19, 2026

41.1%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

12.6%Largest-city concentration · Toronto

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

797

11-50

185

51-200

201-500

5,001-10,000

Email recency for this list is measured worldwide rather than for Canada, so it is reported there. Company counts and contact totals on this page are exact for Canada, over 1,024 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 corporate tax 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 “corporate tax 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 corporate tax 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 corporate tax 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, 2,700 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 19, 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.

Corporate tax 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 corporate tax 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 corporate tax firms are there based in Canada?

RevenueBase identified 1,024 corporate tax 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?

H&r Block Canada, headquartered in Calgary, tops this list with the largest team on record.

Which city has the most corporate tax firms?

Toronto leads with 129 headquartered companies, followed by Mississauga (76) and Calgary (68).

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 2,700 verified decision-maker contacts tracked across these 1,024 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 19, 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.