Company lists · Data refreshed September 2026

Top 25 Tax preparation outsourcing companies based in Canada

RevenueBase identified 1,135 tax preparation outsourcing companies headquartered in Canada as of September 2026 and tracks 5,511 professional contacts across them, including 1,590 with verified work emails. Toronto is the largest hub.

This list covers tax preparation outsourcing companies 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 29, 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 29, 2026 86% judged on-target in blind review
1,135Companies
5,511Contacts tracked
1,590Verified emails
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The 25 largest tax preparation outsourcing companies based in Canada

Ranked by team size
Top 25 of 1,135 tax preparation outsourcing companies based in Canada, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to tax preparation outsourcing companies: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Strong evidenceCalgary, AB, CanadaHQ checked Sep 29, 20265,001-10,000889 contacts →

Strong 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 29, 2026
2Indirect evidenceCalgary, AB, CanadaHQ checked Sep 29, 2026201-500260 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 29, 2026
3Partial evidenceToronto, ON, CanadaHQ checked Sep 29, 202651-200161 contacts →

Partial 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 29, 2026
4Strong evidenceMississauga, ON, CanadaHQ checked Sep 29, 202611-5098 contacts →

Strong evidence

“Mission "To be a leader in the Canadian tax preparation industry by providing friendly and professional services at competitive prices." Description 100 % Canadian Owned and…”

Source: RevenueBase Database · checked Sep 29, 2026
5Strong evidenceBrampton, ON, CanadaHQ checked Sep 29, 202611-5063 contacts →

Strong evidence

“At Accounting Farm, we focus on one thing, helping CPA firms in the USA, Canada, UK, and Australia scale smarter with reliable offshore bookkeeping, tax preparation, and complete…”

Source: RevenueBase Database · checked Sep 29, 2026
6Partial evidenceToronto, ON, CanadaHQ checked Sep 29, 202651-20058 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 29, 2026
7Indirect evidenceBrossard, QC, CanadaHQ checked Sep 29, 202651-20051 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
8Indirect evidenceVictoria, BC, CanadaHQ checked Sep 29, 202611-5049 contacts →

Indirect evidence

“Since 1987, Hutcheson & Co.”

Source: RevenueBase Database · checked Sep 29, 2026
9Strong evidenceCalgary, AB, CanadaHQ checked Sep 29, 202611-5026 contacts →

Strong evidence

“At Wave Taxes Inc, We empower entrepreneurs across Canada to boost their revenue and grow their businesses with our tailored accounting outsourcing solutions.”

Source: RevenueBase Database · checked Sep 29, 2026
10Indirect evidenceEdmonton, AB, CanadaHQ checked Sep 29, 202611-5025 contacts →

Indirect evidence

“Gallo LLP is an #accounting firm with offices in both Edmonton and Sherwood Park.”

Source: RevenueBase Database · checked Sep 29, 2026
11Indirect evidenceNorth York, ON, CanadaHQ checked Sep 29, 202611-5025 contacts →

Indirect evidence

“Accountor CPA offers a wide range of accounting services for small and medium sized businesses.”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceCalgary, AB, CanadaHQ checked Sep 29, 202611-5024 contacts →

Indirect evidence

“ACCOUNTING, BOOKKEEPING AND ADVICE.”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceLondon, ON, CanadaHQ checked Sep 29, 202611-5024 contacts →

Partial evidence

“C&V Income Tax Services is a professional tax service office operating in London, Ontario since 1988.”

Source: RevenueBase Database · checked Sep 29, 2026
14Indirect evidenceSherbrooke, QC, CanadaHQ checked Sep 29, 202611-5022 contacts →

Indirect evidence

“Ex & Co accounting firm offers a complete range of services to business owners in matters of accounts, taxation, bookkeeping and payroll.”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect evidenceNew Westminster, BC, CanadaHQ checked Sep 29, 202611-5020 contacts →

Indirect evidence

“Kaushal & Co.”

Source: RevenueBase Database · checked Sep 29, 2026
16Partial evidenceScarborough, ON, CanadaHQ checked Sep 29, 20261-1020 contacts →

Partial evidence

“At C-Note Tax Solutions Inc, we proudly file tax returns for all Canadians, no matter where you are located.”

Source: RevenueBase Database · checked Sep 29, 2026
17Indirect evidenceVictoria, BC, CanadaHQ checked Sep 29, 202611-5019 contacts →

Indirect evidence

“To all the Canadian small businesses out there, your success equation starts here with Avalon.”

Source: RevenueBase Database · checked Sep 29, 2026
18Partial evidenceMississauga, ON, CanadaHQ checked Sep 29, 202611-5017 contacts →

Partial evidence

“Consulting, Business Plans, Bookkeeping, Accounting and Tax Filing Services for small businesses, professionals and individuals.”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceCalgary, AB, CanadaHQ checked Sep 29, 20261-1017 contacts →

Indirect evidence

“Resolve Accounting delivers exceptional Accounting and Bookkeeping solutions to small, medium businesses and personal clients throughout Calgary and surrounding areas.”

Source: RevenueBase Database · checked Sep 29, 2026
20Partial evidenceMississauga, ON, CanadaHQ checked Sep 29, 202611-5017 contacts →

Partial evidence

“Taxwide is one of Canada’s leading and fastest growing income tax and accounting firms.”

Source: RevenueBase Database · checked Sep 29, 2026
21Indirect evidenceSaint John, NB, CanadaHQ checked Sep 29, 20261-1016 contacts →

Indirect evidence

“Our firm offers a wide range of services to our individual and business clients.”

Source: RevenueBase Database · checked Sep 29, 2026
22Indirect evidenceWinnipeg, MB, CanadaHQ checked Sep 29, 202611-5016 contacts →

Indirect evidence

“McLenehan and Associates Chartered Professional Accountants is a public accounting firm registered with the Chartered Professional Accountants of Manitoba.”

Source: RevenueBase Database · checked Sep 29, 2026
23Indirect evidenceNewmarket, ON, CanadaHQ checked Sep 29, 202611-5016 contacts →

Indirect evidence

“We are guided by our relentless focus on providing superior service, innovation, quality and commitment to our clients.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect evidenceVictoriaville, QC, CanadaHQ checked Sep 29, 202651-20015 contacts →

Indirect evidence

“Pellerin Aubert Ramsay Provencher inc, fondé en 1980, a son siège social à Victoriaville.”

Source: RevenueBase Database · checked Sep 29, 2026
25Partial evidenceKitchener, ON, CanadaHQ checked Sep 29, 20261-1014 contacts →

Partial evidence

“The team at AccountingKW provides effective solutions in respect of tax planning including consulting strategies for business related needs.”

Source: RevenueBase Database · checked Sep 29, 2026

Showing 25 of 1,135 tax preparation outsourcing companies based in Canada

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Tax preparation outsourcing companies based in Canada at a glance

As of Sep 29, 2026
28.9%Verified-email coverage
4.9Average contacts per company
1-10Median size (employees)
9.3%Largest-city concentration · Toronto
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
952
11-50
146
51-200
17
201-500
3
501-1,000
1
5,001-10,000
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 1,135 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 tax preparation outsourcing companies, 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 “tax preparation outsourcing companies”. 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 tax preparation outsourcing companies), 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 tax preparation outsourcing companies, 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, 1,590 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 29, 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.

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 tax preparation outsourcing companies, 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 tax preparation outsourcing companies are there based in Canada?

RevenueBase identified 1,135 tax preparation outsourcing companies 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 tax preparation outsourcing companies?

Toronto leads with 105 headquartered companies, followed by Calgary (75) and Mississauga (71).

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 1,590 verified decision-maker contacts tracked across these 1,135 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 29, 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.