Company lists · Data refreshed September 2026

Top 25 Tax software consulting firms based in Canada

RevenueBase identified 596 tax software consulting firms headquartered in Canada as of September 2026 and tracks 4,253 professional contacts across them, including 1,483 with verified work emails. Toronto is the largest hub.

This list covers tax software 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 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
596Companies
4,253Contacts tracked
1,483Verified emails
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The 25 largest tax software consulting firms based in Canada

Ranked by team size
Top 25 of 596 tax software consulting firms 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 software 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceCalgary, AB, CanadaHQ checked Sep 29, 20265,001-10,000889 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 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, 2026201-500135 contacts →

Partial evidence

“Wolters Kluwer Tax & Accounting Canada is a leading provider of expert solutions for tax, accounting, and audit professionals, offering industry-leading resources that utilize…”

Source: RevenueBase Database · checked Sep 29, 2026
4Indirect evidenceOttawa, ON, CanadaHQ checked Sep 29, 202651-200109 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 29, 2026
5Strong evidenceVancouver, BC, CanadaHQ checked Sep 29, 202651-20086 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 29, 2026
6Partial evidenceMississauga, ON, CanadaHQ checked Sep 29, 202651-20082 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 29, 2026
7Partial evidenceOttawa, ON, CanadaHQ checked Sep 29, 202651-20080 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 29, 2026
8Strong evidenceMississauga, ON, CanadaHQ checked Sep 29, 202651-20072 contacts →

Strong evidence

“We are an accounting, tax, and business consulting firm based in the Greater Toronto Area, Canada.”

Source: RevenueBase Database · checked Sep 29, 2026
9Indirect evidenceEdmonton & Toronto, CanadaHQ checked Sep 29, 202611-5053 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 29, 2026
10Indirect 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
11Strong evidenceToronto, ON, CanadaHQ checked Sep 29, 202611-5041 contacts →

Strong evidence

“Cadesky Tax is an independent tax consulting firm.”

Source: RevenueBase Database · checked Sep 29, 2026
12Indirect evidenceWinnipeg, MB, CanadaHQ checked Sep 29, 202611-5036 contacts →

Indirect evidence

“Public accounting firm.”

Source: RevenueBase Database · checked Sep 29, 2026
13Partial evidenceToronto, ON, CanadaHQ checked Sep 29, 202611-5031 contacts →

Partial evidence

“SBLR LLP is a rapidly evolving mid-sized accounting and tax firm that focuses on delivering top service to the small and medium-size entrepreneurial business owner.”

Source: RevenueBase Database · checked Sep 29, 2026
14Partial evidenceToronto, ON, CanadaHQ checked Sep 29, 202611-5028 contacts →

Partial evidence

“In 1990, prestigious accountants Graeme Clark & Richard Horner opened a new kind of firm that extended beyond taxes, to help their clients even more.”

Source: RevenueBase Database · checked Sep 29, 2026
15Indirect 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
16Indirect evidenceNorth Vancouver, BC, CanadaHQ checked Sep 29, 202611-5025 contacts →

Indirect evidence

“At Lawson & Coleman, we work as a team to provide the best service possible to clients and the community.”

Source: RevenueBase Database · checked Sep 29, 2026
17Partial 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
18Partial evidenceLasalle, QC, CanadaHQ checked Sep 29, 202611-5022 contacts →

Partial evidence

“Founded in 2013, our professional accounting firm is comprised of a dynamic team of professionals and support staff who aim to provide value-added accounting and tax solutions to…”

Source: RevenueBase Database · checked Sep 29, 2026
19Indirect evidenceNew Westminster, BC, CanadaHQ checked Sep 29, 202611-5020 contacts →

Indirect evidence

“Kaushal & Co.”

Source: RevenueBase Database · checked Sep 29, 2026
20Partial 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
21Strong evidenceMississauga, ON, CanadaHQ checked Sep 29, 202611-5017 contacts →

Strong evidence

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

Source: RevenueBase Database · checked Sep 29, 2026
22Partial 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
23Strong evidenceCalgary, AB, CanadaHQ checked Sep 29, 202611-5016 contacts →

Strong evidence

“TaxCycle creates professional tax software for Canadian tax preparers, bookkeepers and accountants.”

Source: RevenueBase Database · checked Sep 29, 2026
24Indirect 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
25Indirect 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

Showing 25 of 596 tax software consulting firms based in Canada

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Tax software consulting firms based in Canada at a glance

As of Sep 29, 2026
34.9%Verified-email coverage
7.1Average contacts per company
1-10Median size (employees)
11.6%Largest-city concentration · Toronto
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
460
11-50
106
51-200
16
201-500
3
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 596 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 software 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 “tax software 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 tax software 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 tax software 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, 1,483 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 software 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 tax software consulting firms are there based in Canada?

RevenueBase identified 596 tax software 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?

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

Which city has the most tax software consulting firms?

Toronto leads with 69 headquartered companies, followed by Mississauga (47) and Calgary (34).

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 1,483 verified decision-maker contacts tracked across these 596 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.