Company lists · Data verified August 2026

Top 22 Accounting services outsourcing companies based in Ottawa, Canada

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 53 companies tracked

There are 53 accounting services outsourcing companies headquartered in Ottawa, Canada (RevenueBase, August 2026). RevenueBase tracks 179 professional contacts across them, including 65 with verified work emails and 17 with mobile numbers. Toronto is the largest hub.

This list covers accounting services outsourcing companies headquartered in Ottawa, Canada, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

53Companies

179Contacts tracked

65Verified emails

17Mobile numbers

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The 22 largest accounting services outsourcing companies based in Ottawa, Canada

Ranked by team size

Top 22 of 53 accounting services outsourcing companies based in Ottawa, Canada, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	The Bookkeeping Bureau LTD	Ottawa, ON	11-50	20	18
2	Zenbooks	Ottawa, ON	11-50	18	12
3	Armstrong Jones LLP	Ottawa, ON	1-10	8	7
4	Numetrica	Ottawa, ON	1-10	6	1
5	Synapse Accounting Group	Ottawa, ON	1-10	5	5
6	Jordash Co. Ltee	Ottawa, ON	1-10	4	2
7	Accountrain INC	Ottawa, ON	1-10	4	2
8	Elevate By Welch LLP	Ottawa, ON	201-500	4	1
9	Deltax Accounting & TAX Services INC	Ottawa, ON	1-10	4	1
10	Power Management INC	Ottawa	1-10	3	2
11	Balanced Solutions - CAS	Ottawa, ON	1-10	3	2
12	Meritum Services	Ottawa, ON	1-10	3	1
13	Ind-Genuity Chartered Professional Accountants	Ottawa, ON	1-10	3	1
14	Revelo Consulting	Ottawa	1-10	2	2
15	Ducharme & Associates	Ottawa	1-10	2	1
16	Dayani Castro Group Corp	Ottawa, ON	1-10	2	1
17	Vision Bookkeeping And Financial Services	Ottawa, ON	1-10	2	1
18	WP Mosher Bookkeeping	Ottawa, ON	n/a	2	1
19	Performance Accounting Solutions	Ottawa, ON	1-10	1	1
20	Ledgers Ottawa W	Ottawa, ON	1-10	1	1
21	Finty INC	Ottawa, ON	1-10	1	1
22	Kirk CPA Professional Corporation	Ottawa	1-10	1	1

Showing 22 of 53 accounting services outsourcing companies based in Ottawa, Canada

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Accounting services outsourcing companies based in Ottawa, Canada at a glance

As of Aug 28, 2026

1-10Median size (employees)

TorontoLargest hub · 206 HQs

17Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

201-500

Accounting services outsourcing companies by metro in Canada

Metro	Companies
Accounting services outsourcing companies in Toronto	206
Accounting services outsourcing companies in Calgary	138
Accounting services outsourcing companies in Mississauga	97
Accounting services outsourcing companies in Montreal	78
Accounting services outsourcing companies in Edmonton	67
Accounting services outsourcing companies in Vancouver	65
Accounting services outsourcing companies in Ottawa	53
Accounting services outsourcing companies in Surrey	40

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “accounting services outsourcing companies”, with match quality audited by blind human judging, and headquartered in Ottawa, Canada.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many accounting services outsourcing companies are there based in Ottawa, Canada?

There are 53 accounting services outsourcing companies headquartered in Ottawa, Canada as of August 2026 (RevenueBase).

What is the largest company on this list?

The Bookkeeping Bureau LTD, headquartered in Ottawa, tops this list with the largest team on record.

Which city has the most accounting services outsourcing companies?

Toronto leads with 206 headquartered companies, followed by Calgary (138) and Mississauga (97).

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 65 verified decision-maker contacts tracked across these 53 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.