Company lists · Data refreshed September 2026

Top 25 Advisory and outsourcing services based in Ottawa, Canada

Name: Advisory and outsourcing services based in Ottawa, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 23, 2026 191 companies tracked

RevenueBase identified 191 advisory and outsourcing services headquartered in Ottawa, Canada as of September 2026 and tracks 1,871 professional contacts across them, including 618 with verified work emails. Toronto is the largest hub.

This list covers advisory and outsourcing services headquartered in Ottawa, 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 23, 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 23, 2026 86% judged on-target in blind review

191Companies

1,871Contacts tracked

618Verified emails

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The 25 largest advisory and outsourcing services based in Ottawa, Canada

Ranked by team size

Top 25 of 191 advisory and outsourcing services based in Ottawa, Canada, ranked by team size, largest first. Data refreshed Sep 23, 2026. RevenueBase Smart Search rates how each company's information relates to advisory and outsourcing services: 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	Welch LLP	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	201-500	399 contacts →
	Indirect evidence “Welch LLP is a Chartered Public Accounting firm that has deep roots in the communities it serves.” Source: RevenueBase Database · checked Sep 23, 2026
2	Corporate Renaissance Group	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	51-200	281 contacts →
	Indirect evidence “Since 1989, CRGroup, a Quisitive Company, has been helping leaders transform enterprise management and performance.” Source: RevenueBase Database · checked Sep 23, 2026
3	Logan Katz LLP	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	51-200	80 contacts →
	Partial evidence “Logan Katz is a forward-thinking public accounting firm delivering high-quality, client inspired accounting, taxation, assurance and business advisory services in Ottawa and…” Source: RevenueBase Database · checked Sep 23, 2026
4	Baker Tilly Ottawa LLP	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	51-200	80 contacts →
	Indirect 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 23, 2026
5	Business Sherpa Group	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	56 contacts →
	Indirect evidence “Business Sherpa Group provides flexible and affordable outsourced operations support to small and medium-sized enterprises (SMEs) across Canada.” Source: RevenueBase Database · checked Sep 23, 2026
6	Maplesoft Group, An SEB Company	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	51-200	47 contacts →
	Indirect evidence “Since 1996 Maplesoft Group has been helping clients successfully execute their business strategies, create value and achieve measurable results through the innovative and…” Source: RevenueBase Database · checked Sep 23, 2026
7	Capcorp Financial	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	37 contacts →
	Partial evidence “Capcorp Financial is a Canadian advisory firm built on one simple belief: good advice changes lives.” Source: RevenueBase Database · checked Sep 23, 2026
8	ITNET	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	51-200	31 contacts →
	Indirect evidence “ITnet is a leading consulting firm dedicated to providing superior service to our clients.” Source: RevenueBase Database · checked Sep 23, 2026
9	49 Solutions	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	19 contacts →
	Indirect evidence “At 49 Solutions we consistently deliver top quality consulting services, supporting both business and technology.” Source: RevenueBase Database · checked Sep 23, 2026
10	P1 Consulting	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	16 contacts →
	Indirect evidence “Established in P1 Consulting has become one of Canada’s most dynamic and progressive consulting firms with a strong reputation for excellence.” Source: RevenueBase Database · checked Sep 23, 2026
11	Nīewe Consulting LTD	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	15 contacts →
	Indirect evidence “Founded in 2004, Nīewe Consulting (formerly Baiame Consulting) is a majority women-owned and led professional services firm that does consulting differently.” Source: RevenueBase Database · checked Sep 23, 2026
12	Somos Consulting Group	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	51-200	15 contacts →
	Indirect evidence “Since its inception in 1991, SOMOS' team of experienced senior management consulting & IT professionals have provided solutions that address the needs of technology and…” Source: RevenueBase Database · checked Sep 23, 2026
13	FIN IP Group	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	13 contacts →
	Indirect evidence “Since its inception, FIN IP Group has pioneered the development of innovative and industry-leading intellectual property (IP) financial services.” Source: RevenueBase Database · checked Sep 23, 2026
14	Hendry Warren LLP	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	51-200	12 contacts →
	Indirect evidence “At Hendry Warren LLP our mission is to provide relevant, reliable information and advice to help our clients achieve their business goals, and offer superior client service in a…” Source: RevenueBase Database · checked Sep 23, 2026
15	Newleaf Performance	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	1-10	12 contacts →
	Indirect evidence “Go from vision to sustainability as we roll-up our sleeves and work with you, your team, and your stakeholders to develop, practice and implement your performance-oriented…” Source: RevenueBase Database · checked Sep 23, 2026
16	Arctech Accelerate	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	11 contacts →
	Indirect evidence “Headquartered in our nation’s capital, Arctech Accelerate is a Canadian management consulting and lobbying firm specializing in helping small and mid-sized businesses navigate…” Source: RevenueBase Database · checked Sep 23, 2026
17	The Halifax Group	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	10 contacts →
	Indirect evidence “The Halifax Group is a multi-service consulting company.” Source: RevenueBase Database · checked Sep 23, 2026
18	Mondouxrollins Partners INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	1-10	9 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
19	The Right Door Consulting & Solutions INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	1-10	9 contacts →
	Indirect evidence “The Right Door Consulting & Solutions is, not surprisingly, all about solutions, ways of finding efficiencies and saving in the current economic environment.” Source: RevenueBase Database · checked Sep 23, 2026
20	Vaive And Associates Professional Corporation	Partial evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	8 contacts →
	Partial evidence “Vaive and Associates Professional Corporation is a tax consulting, business advisory and accounting firm.” Source: RevenueBase Database · checked Sep 23, 2026
21	Armstrong Jones LLP	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	1-10	8 contacts →
	Indirect evidence “Armstrong Jones LLP is an accounting firm based in Ottawa, Ontario that offers services in accounting, audit and assurance, tax planning and compliance, and a wide array of…” Source: RevenueBase Database · checked Sep 23, 2026
22	Beva Global Management INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	8 contacts →
	Indirect evidence “BEVA® is a management consulting firm and training provider with international ties with more than 25 years of experience.” Source: RevenueBase Database · checked Sep 23, 2026
23	Converge Financial INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	11-50	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 23, 2026
24	The Portage Group	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	1-10	7 contacts →
	Indirect evidence “The Portage Group provides associations, not-for-profit and regulatory organizations with pragmatic and future-focused consulting solutions in areas that include: Research…” Source: RevenueBase Database · checked Sep 23, 2026
25	Protak Consulting Group INC	Indirect evidence	Ottawa, ON, CanadaHQ checked Sep 23, 2026	51-200	6 contacts →
	Indirect evidence “Protak Consulting Group Inc.(PCG) has been providing management, business and technology consulting professional services on a wide range of business lines to public and private…” Source: RevenueBase Database · checked Sep 23, 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: advisory and outsourcing services. 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 advisory and outsourcing services.
Partial evidence: Its own public description names part of advisory and outsourcing services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name advisory and outsourcing services. 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 191 advisory and outsourcing services based in Ottawa, Canada

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Advisory and outsourcing services based in Ottawa, Canada at a glance

As of Sep 23, 2026

33.0%Verified-email coverage

9.8Average contacts per company

1-10Median size (employees)

642.9%Largest-city concentration · Toronto

Sep 23, 2026Page data refreshed

Companies by employee count

1-10

151

11-50

51-200

201-500

Email recency for this list is measured across the whole Canada list rather than for Ottawa, so it is reported there. Company counts and contact totals on this page are exact for Ottawa, over 191 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 advisory and outsourcing services, 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 Ottawa, Canada whose own description of what they do matches “advisory and outsourcing services”. 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 advisory and outsourcing services), 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 advisory and outsourcing services, and records with no verified work email. Companies headquartered outside Ottawa 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, 618 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 23, 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.

Advisory and outsourcing services by metro in Canada

Advisory and outsourcing services in Toronto1228
Advisory and outsourcing services in Montreal470
Advisory and outsourcing services in Calgary390
Advisory and outsourcing services in Vancouver368
Advisory and outsourcing services in Mississauga201
Advisory and outsourcing services in Ottawa191
Advisory and outsourcing services in Edmonton158
Advisory and outsourcing services in Quebec114
Advisory and outsourcing services in Oakville85
Advisory and outsourcing services in Winnipeg82
Advisory and outsourcing services in Halifax61
Advisory and outsourcing services in Laval58
Advisory and outsourcing services in Markham58
Advisory and outsourcing services in Burlington53
Advisory and outsourcing services in Richmond Hill53
Advisory and outsourcing services in Victoria53
Advisory and outsourcing services in Brampton50
Advisory and outsourcing services in Vaughan48
Advisory and outsourcing services in London47
Advisory and outsourcing services in Surrey47
Advisory and outsourcing services in Kitchener35
Advisory and outsourcing services in North Vancouver35
Advisory and outsourcing services in Burnaby33
Advisory and outsourcing services in Hamilton33
Advisory and outsourcing services in Regina31
Advisory and outsourcing services in Saskatoon28
Advisory and outsourcing services in Brossard27
Advisory and outsourcing services in North York27
Advisory and outsourcing services in Guelph26

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 advisory and outsourcing services, 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 advisory and outsourcing services are there based in Ottawa, Canada?

RevenueBase identified 191 advisory and outsourcing services headquartered in Ottawa, 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?

Welch LLP, headquartered in Ottawa, tops this list with the largest team on record.

Which city has the most advisory and outsourcing services?

Toronto leads with 1228 headquartered companies, followed by Montreal (470) and Calgary (390).

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 618 verified decision-maker contacts tracked across these 191 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 23, 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.