DDL & Co. Chartered Professional Accountants
“I continue to return every year, because I am very satisfied with the company.”
Best Tax Preparation Services in St. Catharines, ON
17 companies listed · all 17 in St. Catharines · 2 open weekends · 14 rated 4.5+
Data verified October 18, 2026
Darren Bruce, Cpa, Professional Corporation
“I have been with Darren for many years now and have always found Darren and his team to be at a very high level of professionalism and integrity.”
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Kingsman Associates
“Have a Great service, Really good Refunds, I must recommend all to get their taxes done by them.”
Integrated Bookkeeping, Accounting & Tax Services
“They took the time to understand my business and its unique accounting requirements, and developed a tailored plan to ensure that my finances are always in order.”
Siemens Sandra Tax Service
“I have dealt with different people depending on my needs but much of the time it's been Patsy who has been absolutely wonderful!”
Incometaxhouse.com
“They make it so easy to get my tax return without any worries.”
The 17 companies listed for St. Catharines, 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. Catharines, ON
All 17 companies we list here are in St. Catharines itself. We have 19 companies in St. Catharines on file; this page shows the highest-rated 17. The companies on this page are rated from 4.2 to 5.0 across 399 reviews; 2 have 50 or more reviews and 14 are rated 4.5 or higher. 2 are open on Saturdays. Domain records put 5 websites of the companies on this page at ten or more years old; the oldest dates from 2002. 2 offer a free initial consultation and 1 is family- or locally-owned. We have a website on file for 15 of the companies on this page; 13 publish a contact page; 12 list a public email and 1 takes bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book a consultation.
Are any tax preparers listed for St. Catharines open on Saturdays or Sundays?
2 of the 17 companies show weekend hours. Many preparers extend their opening through the filing season and cut back once it ends, so treat weekend availability as seasonal rather than permanent. A quick call saves a wasted trip.
Bash Tax
“If you want a tax guy with deep knowledge of Canada Revenue, Bill is definitely the guy to call.”
SMR CPA
“Shahzad and his staff paying good attention on our tax concerns, discussing with us nicely without any rush and they all know exactly what they doing.”
Jones & O'Connell
“Service is always quick and accurate and the staff is always friendly.”
Richard Williamson
“Approachable, professional and easy to work!”
Padgett Saint Catharines
“Great experience and wonderful guidance on the business side of taxes.”
Dominic V. Fruci, CPA
Motive Tax
AI Professional Accountant Corporation
“Ibrar has always provided exceptional support with all my tax matters and has always been available when required.”
Basic Financial Services
“I have been working with Cody Weber for a number of years and he has been a pleasure to work with.”
Taxassist Accountants
“Taxes were definitely efficient & accurate!”
Sead Accounting Services
Why these companies made our list
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