Company lists · Data refreshed September 2026

Top 25 IT audit consulting firms based in Canada

RevenueBase identified 121 IT audit consulting firms headquartered in Canada as of September 2026 and tracks 688 professional contacts across them, including 226 with verified work emails. Toronto is the largest hub.

This list covers IT audit 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 21, 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 21, 2026 86% judged on-target in blind review
121Companies
688Contacts tracked
226Verified emails
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The 25 largest IT audit consulting firms based in Canada

Ranked by team size
Top 25 of 121 IT audit consulting firms based in Canada, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to IT audit 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 21, 202611-5073 contacts →

Partial evidence

“PKF ANTARES offers wide range of Assurance, Accounting, Tax and Corporate Finance services including- External Audits, Reviews and Compilation of IFRS, ASPE, USGAAP financial…”

Source: RevenueBase Database · checked Sep 21, 2026
2Strong evidenceToronto, ON, CanadaHQ checked Sep 21, 202651-20063 contacts →

Strong evidence

“Adams + Miles delivers accounting, audit, assurance and strategic consulting services to clients across sectors.”

Source: RevenueBase Database · checked Sep 21, 2026
3Indirect evidenceLondon, ON, CanadaHQ checked Sep 21, 202611-5039 contacts →

Indirect evidence

“Digital Boundary Group is an Information Technology Security Assurance Services firm serving clients throughout North America since 2003.”

Source: RevenueBase Database · checked Sep 21, 2026
4Indirect evidenceToronto, ON, CanadaHQ checked Sep 21, 202611-5034 contacts →

Indirect evidence

“As your business grows, keeping up with compliance requirements and strengthening your security posture can be a real challenge.”

Source: RevenueBase Database · checked Sep 21, 2026
5Partial evidenceHalifax, NS, CanadaHQ checked Sep 21, 202611-5021 contacts →

Partial evidence

“CNS and BDO Cayman Islands operate as one firm to provide audit services to clients in the global financial services industry.”

Source: RevenueBase Database · checked Sep 21, 2026
6Indirect evidenceOttawa, ON, CanadaHQ checked Sep 21, 202611-5019 contacts →

Indirect evidence

“Valencia: Cyber Optimists.”

Source: RevenueBase Database · checked Sep 21, 2026
7Partial evidenceBurnaby, BC, CanadaHQ checked Sep 21, 202611-5012 contacts →

Partial evidence

“We are an accounting and consulting firm with a reputation for innovative and lasting results.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceVancouver, BC, CanadaHQ checked Sep 21, 202611-5011 contacts →

Indirect evidence

“Decision Point Advisors is a rapidly growing professional services company.”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceLongueuil, QC, CanadaHQ checked Sep 21, 202611-5010 contacts →

Indirect evidence

“Éric Marsolais, associé principal du cabinet comptable Hébert Marsolais inc, avec 20 ans d'expérience auprès de sociétés privées de toute taille, mes domaines d'expertise…”

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceToronto, ON, CanadaHQ checked Sep 21, 202611-5010 contacts →

Indirect evidence

“A fast growing Toronto-based advisory firm, Fernhill Associates specializes in business operations, technology and cyber security.”

Source: RevenueBase Database · checked Sep 21, 2026
11Strong evidenceOttawa, ON, CanadaHQ checked Sep 21, 20261-108 contacts →

Strong evidence

“Orbis Risk Consulting is an Ottawa based company that provides a range of services that are specifically designed to meet the internal audit and risk management needs of…”

Source: RevenueBase Database · checked Sep 21, 2026
12Partial evidenceOakville, ON, CanadaHQ checked Sep 21, 202611-508 contacts →

Partial evidence

“Contego is a highly focused professional services firm committed to IT Risk and Compliance Management engagements.”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceToronto, ON, CanadaHQ checked Sep 21, 20261-108 contacts →

Indirect evidence

“Free yourself with effective, intelligent technology solutions customized to your needs.”

Source: RevenueBase Database · checked Sep 21, 2026
14Partial evidenceCalgary, AB, CanadaHQ checked Sep 21, 202611-507 contacts →

Partial evidence

“MHM is Canada's first SCC-accredited ISO 42001 audit provider offering AIMS certification and compliance services.”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceCalgary, CanadaHQ checked Sep 21, 20261-106 contacts →

Indirect evidence

“Peak supports TSX and NYSE CEO and CFO internal controls over financial reporting (ICFR) certifications by offering a range of services from fully outsourced compliance through to…”

Source: RevenueBase Database · checked Sep 21, 2026
16Partial evidenceEdmonton, AB, CanadaHQ checked Sep 21, 202611-506 contacts →

Partial evidence

“About Us Secured Approach is a cybersecurity consulting firm committed to safeguarding organizations against evolving cyber threats.”

Source: RevenueBase Database · checked Sep 21, 2026
17Partial evidenceOakville, ON, CanadaHQ checked Sep 21, 20261-105 contacts →

Partial evidence

“Coral eSecure provides consulting support for reaching successful compliance to the following international standards/subjects: Information security management system (ISMS-ISO…”

Source: RevenueBase Database · checked Sep 21, 2026
18Strong evidenceCalgary, AB, CanadaHQ checked Sep 21, 20261-105 contacts →

Strong evidence

“ThreeShield Information Security provides customized IT security tools (through and consulting services (through Organizations with dedicated audit and security organizations use…”

Source: RevenueBase Database · checked Sep 21, 2026
19Partial evidenceKelowna, BC, CanadaHQ checked Sep 21, 20261-104 contacts →

Partial evidence

“If it’s connected to the web, it’s at risk.”

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceCalgary, AB, CanadaHQ checked Sep 21, 20261-104 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
21Indirect evidenceQuebec, QC, CanadaHQ checked Sep 21, 202651-2004 contacts →

Indirect evidence

“Un cabinet comptable qui offre des services-conseils aux autres cabinets comptables figure forcément parmi les plus sérieux, les plus rigoureux, les plus spécialisés.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceOakville, ON, CanadaHQ checked Sep 21, 20261-104 contacts →

Indirect evidence

“Internal Controls are a vital component of financial reporting standards, as outlined by the SEC.”

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceEdmonton, AB, CanadaHQ checked Sep 21, 20261-103 contacts →

Indirect evidence

“IntegriServ's name is derived from integrity and service - two core values of our firm.”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceOakville, ON, CanadaHQ checked Sep 21, 202651-2002 contacts →

Indirect evidence

“Over 20 years of service in the information technology field and our experienced counselors are ready to help you!”

Source: RevenueBase Database · checked Sep 21, 2026
25Partial evidenceBurnaby, BC, CanadaHQ checked Sep 21, 202611-502 contacts →

Partial evidence

“Assuranz is a trusted partner at the C-level and specializes on the domains of Cybersecurity, Data Privacy, IT Risk Management, Governance, Compliance, Security Architecture and…”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 25 of 121 IT audit consulting firms based in Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 226 reachable decision-makers.

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IT audit consulting firms based in Canada at a glance

As of Sep 21, 2026
32.8%Verified-email coverage
5.7Average contacts per company
1-10Median size (employees)
20.7%Largest-city concentration · Toronto
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
83
11-50
30
51-200
5
201-500
1
1,001-5,000
1
10001+
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 121 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 IT audit 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 “IT audit 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 IT audit 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 IT audit 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, 226 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 21, 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.

IT audit consulting firms by metro

  • IT audit consulting firms in Toronto25

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 IT audit 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 IT audit consulting firms are there based in Canada?

RevenueBase identified 121 IT audit 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?

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

Which city has the most IT audit consulting firms?

Toronto leads with 25 headquartered companies, followed by Calgary (13) and Vancouver (10).

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 226 verified decision-maker contacts tracked across these 121 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 21, 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.