Company lists · Data refreshed September 2026

Top 25 Tax advisory firms based in Canada

RevenueBase identified 926 company matches for tax advisory firms associated with Canada as of September 2026 and tracks 6,930 professional contacts across them, including 2,937 with verified work emails. Toronto is the largest hub.

This list covers company matches for tax advisory firms associated with Canada, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 22, 2026 How this list was built
926Companies
6,930Contacts tracked
2,937Verified emails
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The 25 largest tax advisory firms based in Canada

Ranked by team size
Top 25 of 926 company matches for tax advisory firms based in Canada, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 22, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchOttawa, ON, CanadaHQ recorded Sep 22, 2026201-500399 contacts →

Exact match

“Welch LLP is a Chartered Public Accounting firm that has deep roots in the communities it serves.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
2Exact matchCalgary, AB, CanadaHQ recorded Sep 22, 2026201-500260 contacts →

Exact match

“For more than 70 years, our focus has always been to bring financial peace of mind to our Canadian business owners.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
3Exact matchToronto, ON, CanadaHQ recorded Sep 22, 202651-200192 contacts →

Exact match

“Work together with people excited by your goals and eager to address your unique business needs.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
4Exact matchToronto, ON, CanadaHQ recorded Sep 22, 202651-200168 contacts →

Exact match

“Zeifmans is a full-service tax, accounting and consulting firm based in Toronto, Canada.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
5Exact matchToronto, ON, CanadaHQ recorded Sep 22, 202651-200161 contacts →

Exact match

“Trowbridge Professional Corporation is a long established global accounting firm that provides a wide range of personal and corporate tax services, specializing in international…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
6Exact matchOttawa, ON, CanadaHQ recorded Sep 22, 202651-200109 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
7Exact matchVancouver, BC, CanadaHQ recorded Sep 22, 202651-200106 contacts →

Exact match

“Thorsteinssons is the largest Canadian law firm practicing exclusively in Tax.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
8Exact matchBurlington, ON, CanadaHQ recorded Sep 22, 202651-20098 contacts →

Exact match

“SB Partners is a full service accounting firm located in Burlington, Ontario.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
9Exact matchOttawa, ON, CanadaHQ recorded Sep 22, 202651-20094 contacts →

Exact match

“GGFL is the tax planning and accounting firm for Ottawa’s successful business people.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
10Exact matchVancouver, BC, CanadaHQ recorded Sep 22, 202651-20086 contacts →

Exact match

“Located in the heart of Downtown Vancouver, Invictus Accounting Group LLP provides consulting, accounting and tax advisory for publicly listed and privately held companies.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
11Exact matchMississauga, ON, CanadaHQ recorded Sep 22, 202651-20082 contacts →

Exact match

“S+C Partners has been providing professional accounting, advisory and tax services across the GTA since 1987.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
12Exact matchOttawa, ON, CanadaHQ recorded Sep 22, 202651-20080 contacts →

Exact match

“At Baker Tilly Ottawa LLP, we provide expert tax, assurance, and entrepreneurial services to help your business grow and prosper.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
13Exact matchToronto, ON, CanadaHQ recorded Sep 22, 202651-20077 contacts →

Exact match

“Quality Service.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
14Exact matchCalgary, AB, CanadaHQ recorded Sep 22, 202651-20071 contacts →

Exact match

“At KMSS we strive to provide an extraordinary experience.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
15Exact matchEdmonton, AB, CanadaHQ recorded Sep 22, 202651-20070 contacts →

Exact match

“With offices in Calgary, Edmonton and Saskatoon, Felesky Flynn LLP provides Canadian and international tax planning, tax representation and litigation, and wills and estates…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
16Exact matchBridgewater, NS, CanadaHQ recorded Sep 22, 202651-20063 contacts →

Exact match

“Public Accounting, Consulting and Tax Advisors.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
17Exact matchToronto, ON, CanadaHQ recorded Sep 22, 202651-20058 contacts →

Exact match

“SRJ Chartered Accountants is a cloud based Canadian full-service tax and accounting firm located in the heart of downtown Toronto, Mississauga and Oakville.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
18Exact matchVancouver, CanadaHQ recorded Sep 22, 202611-5056 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
19Exact matchEdmonton & Toronto, CanadaHQ recorded Sep 22, 202611-5053 contacts →

Exact match

“At Romanovsky and Associates we are committed to providing high quality services that are needed in today's competitive market place.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
20Exact matchBrossard, QC, CanadaHQ recorded Sep 22, 202651-20051 contacts →

Exact match

“Services * Expansion américaine et/ou internationale;* Conformité fiscale américaine (corporative);* Conformité fiscale américaine (individu);* « Snowbirds » et immobilier…”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
21Exact matchVictoria, BC, CanadaHQ recorded Sep 22, 202611-5049 contacts →

Exact match

“Since 1987, Hutcheson & Co.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
22Exact matchMontreal, QC, CanadaHQ recorded Sep 22, 20261,001-5,00046 contacts →

Exact match

“Palmarès des 100 meilleurs employeurs 2026 | 2025 I 2024 I 2023 I 2022 BDO Canada s.r.l./S.E.N.C.R.L.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
23Exact matchVictoria, BC, CanadaHQ recorded Sep 22, 202611-5044 contacts →

Exact match

“Dusanj & Wirk is an accounting firm based in Victoria, BC, providing accounting, taxation, auditing and advisory services.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
24Exact matchEdmonton, AB, CanadaHQ recorded Sep 22, 202651-20041 contacts →

Exact match

“Welcome to HGA!”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase
25Exact matchToronto, ON, CanadaHQ recorded Sep 22, 202611-5041 contacts →

Exact match

“Cadesky Tax is an independent tax consulting firm.”

Recorded in the RevenueBase company graph · Sep 22, 2026 · View company records in RevenueBase

Showing 25 of 926 tax advisory firms based in Canada

See the full list, filter by size, metro and specialty, and access 2,937 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Tax advisory firms based in Canada at a glance

As of Sep 22, 2026
42.4%Verified-email coverage
7.5Average contacts per company
1-10Median size (employees)
13.0%Largest-city concentration · Toronto
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
683
11-50
189
51-200
32
201-500
5
501-1,000
1
1,001-5,000
1

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 926 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Canada whose business descriptions match “tax advisory firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,937 professional contacts with verified work emails across the full matched dataset. 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 22, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “tax advisory firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many tax advisory firms are there based in Canada?

RevenueBase identified 926 company matches for tax advisory firms associated with Canada as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Welch LLP tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most tax advisory firms?

Toronto leads with 120 company records, followed by Mississauga (62) and Calgary (60).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,937 professional contacts with verified work emails tracked across these 926 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 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 SmartSearch, 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.