Taxvidya
“I surely recommend for great experience, excellent service, informative and precise they response quickly.”
Best Tax Preparation Services in St. Thomas, ON
15 companies listed · 6 in St. Thomas · 5 open weekends · 11 rated 4.5+
Data verified October 21, 2026
Your Office OR Mine
“If you need a lady to get the job done fast an painless this is the lady you are looking for, I've been having my taxes done by her for 12 plus years an she does not disappoint.”
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.”
Rita Payne
“My family have been using Rita Payne's income tax services for approximately 30 years.”
Elbidas Tax & Financial Services
“Just an all around amazing experience with someone who listened and answered the questions I had.”
Monteith Accounting Corp
The 15 companies listed for St. Thomas, ON prepare personal and business tax returns for clients. Details about services and credentials come from each company's own website; ratings and quotes come from public reviews.
Area overview: St. Thomas, ON
6 of the 15 companies we list are based in St. Thomas; the other 9 serve St. Thomas from London (24 km) and Aylmer (18 km). The companies on this page are rated from 4.0 to 5.0 across 1,439 reviews; 4 have 50 or more reviews and 11 are rated 4.5 or higher. 5 are open on Saturdays and 3 on Sundays. 5 have ten or more years of experience, the longest 27 years. 2 offer a free initial consultation. We have a website on file for 11 of the companies on this page; 9 publish a contact page and 9 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 tax preparers outside St. Thomas shown on this page?
6 of the 15 companies are in St. Thomas itself. The rest come from other towns within 25 km. Returns are prepared remotely, so provincial knowledge matters more than the drive. Distances are straight-line.
C & V
“I've been using their service for many years now and they are always quick, accurate, easy to deal with!”
Multitaxservices
“Highly recommended and looking forward to file tax in the future with her.”
Ayad Accounting & Management
“Just an amazing experience thank you so much for filing my taxes for the last 5 years and all the great advice you have given me ..”
Century Accountant Professional Corporation
“I formed my incorporation with century accountants and I got the best and experienced service.”
Synergy Tax & Business Solutions
“She is fantastic, knowledgeable finds the answers to my issues quickly and is thorough in her response.”
Elliott & Associates
“Year after year, he handles our taxes with professionalism and care, ensuring everything is done thoroughly and accurately.”
A & E Tax Services
“Lynne has been doing my self-employed tax returns for years and I am always pleased with the service.”
Graham Scott Enns
“Mike Stover has been my accountant for the last 12 years, I am very satisfied with the professional work he has done for me.”
Pro Accounting Solutions
“Their attention to detail and thoroughness in analyzing my financial data allows for well-informed decision-making.”
Why these companies made our list
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