Taxvidya
“Treat customers lovingly with patience and listen all their grievances so helpful and supportive andVery professional.”
Best Accountants in St. Thomas, ON
15 firms listed · 4 in St. Thomas · 3 open weekends · 13 rated 4.5+
Data verified October 21, 2026
Kate Kenny, Cpa, Professional Corporation
“The staff is friendly and knowledgeable!”
Accounting Plus
“Mike is always extremely helpful and takes the time to answer and go through any questions.”
Monteith Accounting Corp
Akpc Chartered Professional Accountant
“Ashraf was very helpful in maximizing tax deductions and also gave tips for next year's tax.”
C & V
“C&V is a well established and reputable company, and provides excellent customer service, making filing your taxes a painless process.”
The 15 firms listed for St. Thomas, ON handle year-end statements, corporate filings and personal returns. Details about sectors and software come from each firm's own website; ratings and quotes come from public reviews.
Area overview: St. Thomas, ON
4 of the 15 firms we list are based in St. Thomas; the other 11 serve St. Thomas from London (24 km) and Aylmer (17 km). The firms on this page are rated from 4.0 to 5.0 across 1,442 reviews; 5 have 50 or more reviews and 13 are rated 4.5 or higher. The topics that come up most in reviews of the firms on this page are "communication", "expertise" and "price". 3 are open on Saturdays and 2 on Sundays. Domain records put 5 websites of the firms on this page at ten or more years old; the oldest dates from 1998. 4 offer a free initial consultation and 1 is family- or locally-owned. We have a website on file for 14 of the firms on this page; 11 publish a contact page and 12 list a public email. We count these figures across the firms on this page; distances are straight-line, and hours and prices change, so confirm the details with the firm before you book a consultation.
Why are accounting firms outside St. Thomas listed on this page?
4 of the 15 firms are in St. Thomas itself, and the rest come from other towns within 25 km. What matters more than the drive is whether the firm knows your province and your sector. Distances are straight-line.
Multitaxservices
“Karan has been great with filing tax and I have even referred my friends”
Ayad Accounting & Management
“He's very personable and friendly and I recommend him to everyone I know and they're always pleased with his service as well!”
Davis Martindale
“I had the pleasure of meeting with this bunch yesterday and couldn't be happier.”
Book onlineBook
Pimlico Accounting
“Mikes customer service, punctuality and ability to maneuver through tax issues relating to my industry has made him irreplaceable..”
Lambert Cook CPA
“We had no idea how to go about our taxes, and Lambert was super patient, kind, and explained everything to us.”
Joseph Mukkada, CPA
“Fast service ,help for financial modeling, well expertise and help to find out areas to improve , Trustworthy & affordable .”
Millson Hills Accounting and Bookkeeping Services
“It is their proactive consultative approach that really stands out for me.”
Graham Scott Enns
“He has guided our personal and business dealings with a great deal of industry knowledge and professionalism.”
Charles R. Summers
Why these companies made our list
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