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Business Advantage - Tax Solutions
- Small Business
“I feel well supported and was able to put pins in place to ensure tax efficiency for my small business.”
Best Bookkeeping Services in St. Thomas, ON
24 companies listed · 7 in St. Thomas · 1 open 24/7 · 6 open weekends · 21 rated 4.5+
Data verified October 21, 2026
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Southwestern Tax Service
“Southwestern Tax Service has been our accountant for my business and personal needs for over 10 years and their expertise, knowledge and caring are second to none.”
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Books Smart
“Mike has been a pleasure to work with”
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Bookkeeping Plus
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Elgin Bookkeeping
“I can't say enough good things about their services!”
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RCA Accounting
“They were also very knowledgeable and helped me when I had income from out of province, figuring out all the benefits I was eligible for while in school, and all sorts of things I wouldn't have been able to do on my own.”
The 24 companies listed for St. Thomas, ON handle day-to-day bookkeeping and sales tax filings for businesses. Details about packages and software come from each company's own website; ratings and quotes come from public reviews.
Area overview: St. Thomas, ON
7 of the 24 companies we list are based in St. Thomas; the other 17 serve St. Thomas from London (24 km), Dorchester (26 km) and Komoka (29 km). 23 of the companies on this page have a rating, from 4.0 to 5.0 across 646 reviews; 3 have 50 or more reviews and 21 are rated 4.5 or higher. When clients rate these companies on specific qualities, they most often praise professionalism (96%), responsiveness (78%) and quality (74%). The topics that come up most in reviews of the companies on this page are "communication", "expertise" and "patient". 1 is open around the clock; 6 are open on Saturdays and 2 on Sundays. Domain records put 6 websites of the companies on this page at ten or more years old; the oldest dates from 2003. 1 offers urgent consultations; 1 offers remote or virtual consultations and 5 offer a free initial consultation. We have a website on file for 20 of the companies on this page; 16 publish a contact page and 17 list a public email. We count these figures across the companies on this page; distances are straight-line, and hours and prices change, so confirm the details with the company before you book a consultation.
Why are bookkeeping companies outside St. Thomas shown here?
7 of the 24 companies are based in St. Thomas itself. The others come from other towns within 30 km. Since the work is done in the cloud, the province and the sector matter more than the distance. Distances are straight-line.
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Equity Bookkeeping
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Multitaxservices
- Questions
- Tax Filing
- Communication
“Their team was incredibly friendly and supportive, guiding me through the process of filing taxes for the first time in Canada as an international student.”
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Canadian Accounting & Financial Services
- Gratitude
- Questions
- Communication
“I was very hesitant at first because I have been going to my accountant forever and when it was time to change to a new one I was very reluctant, BUT chaza knew exactly what to do, walked me thru everything and got an amazing return!”
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Century Accountants
- Price
“Positive experience, my all interactions took place over emails/call/ text, very apt for the current situation.”
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Ayad Accounting & Management
- Stress
- Service
- Money
“Ayad is not only incredibly knowledgeable and thorough, but he also goes above and beyond to ensure that I maximize my returns while staying compliant with tax regulations.”
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Akpc Chartered Professional Accountant
- Tax Return
- Questions
- Price
“He's very knowledgeable and he takes the time to answer our questions and give guidance on how we can better structure ourselves from a tax perspective.”
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Synergy Tax and Business Solutions
- Company
- Team
“I looked online and saw that Synergy is a Quickbooks authorized company, so I called Sarah and after she worked her magic and jumped through some hoop, I had my report within two hours.”
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Reynolds Payroll & Bookkeeping Services
“Thank you, Reynolds Payroll & Bookkeeping Services, for the outstanding relationship and we are looking forward to starting more Business ventures with your team by our side.”
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Laser Beam Accounting
- Accountant
- Business
- Professional
“Amit is very responsive, organized, simplifies things using technology solutions and does an excellent job of communicating with me and my team as necessary to get things off the ground swiftly.”
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Millson Hills Accounting and Bookkeeping Services
- Payroll
- Team
- Communication
“Our representative Wendy has worked on our accounts for all of those years and has been highly successful in collecting overdue accounts and keeping current account current.”
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R H Bookkeeping and Tax Services
“Rose is very helpful and patient working with me to get my small business accounting in order.”
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RMD Bookkeeping
“Nice services they provide”
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Deveau Accounting &
“Highly recommend”
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Jennifer Hudson Tax & Bookkeeping
“Always professional, friendly and efficient.”
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Lmd Bookkeeping & Business Services
“I have had the pleasure and peace of mind of working with LMD Bookkeeping & Business Services for about a year now and I am so happy to have contracted their services.”
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Ijay Bookkeeping Services
“Amazing book keeper!”
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All Done 4U Bookkeeping
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Trillium Bookkeeping and Accounting
- Questions
- Team
- Small Business
“I'm not being egotistical, but I are doubt there are many who have searched as hard as I have, and you can trust me when I say the folks at Trillium know what they're talking about and are incredibly efficient.”
Why these companies made our list
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