List of Accounting firms in Ontario
Ontario has 2,229 Accounting firms in this dataset, last verified September 9, 2026. That makes it the largest market for Accounting firms in Canada, with 41% of the national total, ahead of British Columbia (985).
Among cities, Mississauga (144) and Brampton (134) are nearly level at the top, with Ottawa (102) in third. Together the top three hold only 17% of all Accounting firms in Ontario, so the market reaches well beyond its biggest cities.
Email coverage mirrors the national picture, with 755 records (33.9%) including an email address against 34.6% across Canada. 2,135 (95.8%) list a phone number, and 733 carry both.
80.8% of Accounting firms in Ontario have a website, in line with the national average of 79.6%. Only 428 lack a site, so pitch redesigns and SEO rather than first-time builds.
Among the 1,481 rated Accounting firms in Ontario, 80% hold a 5-star average, in line with the national figure of 78%. 57 are rated 1 to 2 stars (3.8% of rated businesses, in line with the national 3.9%), a natural shortlist for reputation management and review software.
Social Media Reach
396
311
370
99
YouTube
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Accounting firms List in Ontario
Browse a random sample of 15 records — see the exact fields and data quality before you download.
| LOGO | Business Name | Address | City | State | Country | Phone | Website | Reviews | Rating | FB | IG | LI | YT | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | JIT Accounting & Tax | Address | Hornepayne | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | |
 | Hamilton Business Accounting Services | Address | Hamilton | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | |
 | Baker Trillium LLP Aylmer | Address | Aylmer | Ontario | Canada | Email | Phone | 3 | 4.3 | ||||||
M Bloomberg Professional Corporation | Address | Richmond Hill | Ontario | Canada | Email | Phone | 1 | 5 | — | — | — | ||||
 | Stern Cohen Accountants | Address | Toronto | Ontario | Canada | Email | Phone | 67 | 4.7 | — | — | — | — | ||
 | Cooper & Co Solution | Address | Markham | Ontario | Canada | Email | Phone | 6 | 5 | — | — | — | — | ||
Tillsonburg CPA | Address | Tillsonburg | Ontario | Canada | Email | Phone | 0 | 0 | — | — | — | — | |||
CPA4Cannabis | Address | Bowmanville | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | ||
 | K&A Professional Accounting & Tax Services Inc. | Address | Brampton | Ontario | Canada | Email | Phone | 57 | 4.9 | — | — | — | — | ||
 | Precise Tax Professionals | Address | Brampton | Ontario | Canada | Email | Phone | — | 0 | 0 | — | — | — | — | |
 | Hawley & Chatwal LLP Chartered Professional Accountants | Address | Mississauga | Ontario | Canada | Email | Phone | 16 | 4.5 | — | — | — | — | ||
 | Vaive and Associates | Address | Ottawa | Ontario | Canada | Email | Phone | 3 | 3.7 | — | — | — | |||
 | LR Professional Services | Address | Cambridge | Ontario | Canada | Email | Phone | — | 8 | 3 | — | — | — | — | |
 | The Accounting Professionals | Address | Brampton | Ontario | Canada | Email | Phone | 0 | 0 | — | — | — | — | ||
 | BH Business Consulting | Address | Elmira | Ontario | Canada | Email | Phone | — | 1 | 4 | — | — | — | — |
This is a randomized preview — the full database contains 2,229 records with complete field coverage.
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2,229 verified records — emails, phones, social profiles and more. One-time payment, instant download.
What You Can Do with the List of Accounting firms in Ontario
This list is built for teams that sell to Accounting firms: financial software vendors, lead generation partners and managed IT and security providers. It covers 2,229 Accounting firms in Ontario, with the fields to call, email, segment and map them.
Who Sells to Accounting firms in Ontario
Each of these buyers can work the 2,229 businesses in this list as a pipeline for a different product:
- Financial and compliance software: Pitch client management, document handling and compliance tools to the 2,229 Accounting firms in Ontario.
- Lead generation and referral partners: Offer exclusive leads or set up referral partnerships for new clients.
- Managed IT and cybersecurity providers: Sell backups, email security and compliance support to firms that hold sensitive client data.
Phone, Email and Contact Form Outreach in Ontario
Start with the 733 records that list both a phone number and an email address, then widen out channel by channel:
- Cold calling (2,135): 95.8% of records include a phone number for call campaigns, appointment setting and follow-ups.
- Email sequences (755): 33.9% of records include an email address, enough to run a dedicated cold email campaign alongside calls.
- Website contact forms (736): businesses with a contact page URL give you another way in when no email is listed.
- CRM import: CSV and Excel files load into HubSpot, Salesforce, Zoho or Pipedrive, with city, state and postal code columns for assigning leads to reps.
Prospect Segments for Agencies in Ontario
Filter the website, rating and social columns to pull the Accounting firms that fit a specific service before you pitch:
- No website listed (428): 19% of Accounting firms in Ontario have no website on record, a direct prospect list for web designers and local SEO agencies.
- Rated 1 to 2 stars (57): businesses with poor Google ratings, prospects for reputation management and review generation services.
- No Facebook page (1,833): 82% have no Facebook page on record, an opening for social media management agencies.
Prioritize Cities Across Ontario
The 2,229 Accounting firms in Ontario are spread across 3 cities we track and many smaller towns, so rank areas before sending reps out:
- Top city markets: Mississauga, Brampton and Ottawa hold 17% of records in Ontario, the biggest clusters for in-person visits.
- Beyond the big cities: 1,849 records (83%) sit outside the 3 cities with their own list, reachable by phone and email without travel.
- Postal code patches: records include postal codes, so each rep can get a compact patch with no overlapping accounts.
- Route planning: records include latitude and longitude, so you can map accounts and plan visit days around clusters.
Data Coverage for Accounting firms in Ontario
2,229 records · verified September 9, 2026
- Phone numbers
- 2,135
- Email addresses
- 755
- Phone and email
- 733
- Websites
- 1,801
Google ratings· 1,481 rated (66%)
80% hold 5 stars
- 1-star rated
- 29
- 2% of rated
- 2-star rated
- 28
- 1.9% of rated
- 3-star rated
- 118
- 8% of rated
- 4-star rated
- 117
- 7.9% of rated
- 5-star rated
- 1,189
- 80.3% of rated
Social profiles:
- Facebook:396· 17.8%
- LinkedIn:370· 16.6%
- Instagram:311· 14%
- X (Twitter):132· 5.9%
- YouTube:99· 4.4%
Accounting firms in Ontario are a mixed-channel market: 95.8% list a phone number and 33.9% publish an email. Among 1,481 rated Accounting firms, 80% hold 5 stars, a spread heavily skewed to the top, so low ratings stand out.
Related Accounting firms by Location
Browse datasets for Accounting firms across nearby locations
Frequently asked questions about Accounting firms in Ontario
Everything you need to know about our accounting firms database for Ontario: data quality, coverage, freshness, pricing, and formats. Last updated September 9, 2026.
How many Accounting firms are there in Ontario?
There are 2,229 accounting firms in Ontario in our verified database, as of September 9, 2026.
This covers independent operators, regional chains, and enterprise-scale businesses, across every city in Ontario, for sales prospecting, competitive research, and territory planning.
How up to date is the Accounting firms data for Ontario?
This dataset was last updated in September 9, 2026.
Business contact data decays at roughly 2–3% per month as businesses close, move, or change details, so we re-verify our most-purchased datasets on a rolling basis.
Every file is also run through email verification before delivery, and past buyers are offered discounted refreshed versions as updates ship.
What fields are included in the Accounting firms database for Ontario?
Each record can include: business name, full address, phone number, email address, website URL, social profiles (LinkedIn, Facebook, Instagram, YouTube, X), review ratings, and category details, plus contact-page URLs where available.
Field coverage varies by record; the counts below and the free sample show you exactly what to expect before buying.
Where can I buy verified market intelligence data for Accounting firms businesses in Ontario?
InfiniteLeadsHub provides verified market intelligence datasets for accounting firms businesses in Ontario as a one-time purchase with no subscription.
Ideal for market research, sales planning, and business development.
How much does the Accounting firms database for Ontario cost?
The complete accounting firms leads database for Ontario costs $24 as a one-time payment.
You get instant access to all 2,229 records with no recurring fees, no per-record charges, and no seat limits.
It is a cost-effective alternative to subscription platforms that charge monthly for the same public business data.
Is this a cheaper alternative to subscription lead databases like ZoomInfo or Apollo?
Yes. For teams that need accounting firms contacts in Ontario specifically, a one-time $24 file is usually far cheaper than subscription platforms, which typically charge thousands of dollars per year with contracts and per-seat pricing.
Subscriptions make sense for large sales teams needing continuous multi-industry access; a one-time targeted list makes sense when you know exactly which niche and geography you're selling into.
Can I preview a sample of the Accounting firms data before buying?
Yes. A free sample dataset is available so you can evaluate data quality, field coverage, and format before purchasing.
The sample is a representative slice of the full Ontario accounting firms database, including contact fields, social profiles, and ratings data.
How do I download the Accounting firms list, and what file formats are available?
You get instant access after purchase. Files are delivered in CSV and Excel (XLSX) formats.
CSV and Excel import directly into CRMs like Salesforce, HubSpot, and Zoho and into any email platform.
How many Accounting firms in Ontario have phone numbers?
2,135 accounting firms in Ontario (96% of the database) include a phone number.
That makes the dataset effective for cold calling, telemarketing, and appointment setting campaigns.
How many Accounting firms in Ontario have email addresses?
755 accounting firms in Ontario (34%) include an email address.
Email remains one of the highest-ROI B2B outreach channels, making this subset ideal for cold email sequences, product announcements, and drip campaigns.
How many Accounting firms in Ontario have both a phone number and an email address?
733 accounting firms in Ontario have both a phone number and an email address.
Dual-contact records enable multi-channel outreach: combining calls with email follow-ups measurably improves response rates.
How many Accounting firms in Ontario are active on social media?
Social profile coverage for accounting firms in Ontario: 370 on LinkedIn, 396 on Facebook, 311 on Instagram, 99 on YouTube, 132 on X (Twitter).
Social presence signals digitally engaged businesses, which is useful for agencies pitching social media services, ad platforms building audiences, and vendors targeting digitally mature prospects.
How many Accounting firms in Ontario have a website?
1,801 accounting firms in Ontario (81%) have an active business website.
That is an indicator of digital maturity, and an ideal segment for SEO agencies, hosting providers, and SaaS platforms.
How many Accounting firms in Ontario do not have a website?
428 accounting firms in Ontario operate without a business website.
These are high-intent, overlooked prospects for web design agencies, local SEO providers, and Google Business optimization services.
What are the review ratings of Accounting firms in Ontario?
Rating breakdown for accounting firms in Ontario: 1,189 with a 5-star rating, 117 with a 4-star rating, 118 with a 3-star rating, 28 with a 2-star rating, 29 with a 1-star rating.
Top-rated businesses suit premium services and partnership proposals; lower-rated businesses are receptive prospects for reputation management, review tools, and operational software.
Can I get Accounting firms data for other states or the entire US?
Yes. The national Accounting firms database covers all 50 US states, and individual state and major-city lists are also available.
If you buy Ontario first, contact us and we'll credit your purchase toward the national upgrade.
Most multi-state buyers save money going national.
Is the Accounting firms contact data in Ontario legal to use for B2B outreach?
Yes. All data is sourced exclusively from publicly available information: Google Business listings, company websites, social media profiles, and public business directories.
This is business contact information, not personal consumer data, making it appropriate for B2B prospecting.
We recommend following applicable regulations such as CAN-SPAM (US), CASL (Canada), and GDPR (EU-targeted campaigns) so your outreach remains fully compliant.