Company lists · Data verified August 2026

Top 25 Accounting firms for small businesses based in Ottawa, Canada

Name: Accounting firms for small businesses based in Ottawa, Canada
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 71 companies tracked

There are 71 accounting firms for small businesses headquartered in Ottawa, Canada (RevenueBase, August 2026). RevenueBase tracks 316 professional contacts across them, including 119 with verified work emails and 22 with mobile numbers. Toronto is the largest hub.

This list covers accounting firms for small businesses 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.

71Companies

316Contacts tracked

119Verified emails

22Mobile numbers

Unlock all 71 companies Free account · no credit card · 2 minutes

The 25 largest accounting firms for small businesses based in Ottawa, Canada

Ranked by team size

Top 25 of 71 accounting firms for small businesses 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	Mccay Duff LLP	Ottawa, ON	51-200	66	39
2	The Bookkeeping Bureau LTD	Ottawa, ON	11-50	20	18
3	Zenbooks	Ottawa, ON	11-50	18	12
4	AI TAX Consultants	Ottawa, ON	11-50	13	2
5	The BM Group	Ottawa, ON	11-50	9	4
6	Armstrong Jones LLP	Ottawa, ON	1-10	8	7
7	Blueprint Accounting, INC	Ottawa, ON	1-10	8	5
8	Numetrica	Ottawa, ON	1-10	6	1
9	Synapse Accounting Group	Ottawa, ON	1-10	5	5
10	Ouseley Hanvey Clipsham Deep LLP	Ottawa, ON	11-50	4	3
11	Jordash Co. Ltee	Ottawa, ON	1-10	4	2
12	Accountrain INC	Ottawa, ON	1-10	4	2
13	Elevate By Welch LLP	Ottawa, ON	201-500	4	1
14	Deltax Accounting & TAX Services INC	Ottawa, ON	1-10	4	1
15	Balanced Solutions - CAS	Ottawa, ON	1-10	3	2
16	Power Management INC	Ottawa	1-10	3	2
17	Meritum Services	Ottawa, ON	1-10	3	1
18	Mcintyre & Associates Chartered Accountants	Ottawa, ON	1-10	2	2
19	Ducharme & Associates	Ottawa	1-10	2	1
20	Clinton Tano Professional Corporation	Ottawa, ON	1-10	2	1
21	Vision Bookkeeping And Financial Services	Ottawa, ON	1-10	2	1
22	Dayani Castro Group Corp	Ottawa, ON	1-10	2	1
23	Performance Accounting Solutions	Ottawa, ON	1-10	1	1
24	Ledgers Ottawa W	Ottawa, ON	1-10	1	1
25	Kanata TAX Services	Ottawa, ON	1-10	1	1

Showing 25 of 71 accounting firms for small businesses based in Ottawa, Canada

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 119 reachable decision-makers.

Free account · no credit card

See all 71 companies

Accounting firms for small businesses based in Ottawa, Canada at a glance

As of Aug 28, 2026

1-10Median size (employees)

TorontoLargest hub · 291 HQs

22Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

Accounting firms for small businesses by metro in Canada

Metro	Companies
Accounting firms for small businesses in Toronto	291
Accounting firms for small businesses in Calgary	191
Accounting firms for small businesses in Mississauga	132
Accounting firms for small businesses in Montreal	121
Accounting firms for small businesses in Vancouver	119
Accounting firms for small businesses in Edmonton	106
Accounting firms for small businesses in Ottawa	71
Accounting firms for small businesses in Surrey	55

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 firms for small businesses”, 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; 2 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 firms for small businesses are there based in Ottawa, Canada?

There are 71 accounting firms for small businesses headquartered in Ottawa, Canada as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most accounting firms for small businesses?

Toronto leads with 291 headquartered companies, followed by Calgary (191) and Mississauga (132).

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 119 verified decision-maker contacts tracked across these 71 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.

Ready to reach these companies? Verified emails and direct dials for all 71 accounting firms for small businesses based in Ottawa, Canada. Start with a free account, no credit card.

Get the full list

Related lists

Accounting firms for small businesses by geography

Browse the directory

Browse: Companies home · Accounting firms for small businesses in Canada · All Canada lists · All Accounting firms for small businesses lists · New lists

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.