DDL & Co. Chartered Professional Accountants
“A first class organization that places the needs and concerns of its clients first.”
Best Bookkeeping Services in St. Catharines, ON
15 companies listed · 12 in St. Catharines · 1 open weekends · 12 rated 4.5+
Data verified October 18, 2026
Darren Bruce, Cpa, Professional Corporation
“Anytime we have a question or concern, they take the time to discuss and help in any way possible”
Integrated Bookkeeping, Accounting & Tax Services
“Since switching our accounts to the team at 'Integrated' we have received such great service and Zurab's insights into our books have helped us save money and improve the systems we use to manage our revenue and resources.”
Siemens Sandra Tax Service
“I have been a very satisfied client of Sandra's Tax Service for years.”
Bash Tax
“They were done within a few days and our returns were in our bank account a few days after that.”
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.”
The 15 companies listed for St. Catharines, 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. Catharines, ON
12 of the 15 companies we list are based in St. Catharines; the other 3 serve St. Catharines from Niagara Falls (17 km). 14 of the companies on this page have a rating, from 4.2 to 5.0 across 282 reviews; 1 has 50 or more reviews and 12 are rated 4.5 or higher. 1 is open on Saturdays. Domain records put 4 websites of the companies on this page at ten or more years old; the oldest dates from 2002. 4 offer a free initial consultation; 1 is family- or locally-owned and 1 lists coupons or special offers. We have a website on file for 13 of the companies on this page; 11 publish a contact page; 11 list a public email and 1 takes bookings online. 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. Catharines shown here?
12 of the 15 companies are based in St. Catharines itself. The others come from other towns within 20 km. Since the work is done in the cloud, the province and the sector matter more than the distance. Distances are straight-line.
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
Taxassist Accountants
“Had our taxes done here and it was a very good experience!”
Mabon Accounting Services
Robert Magder Financial Services
“I am very pleased with their services.”
Beancounter Bookkeeping & Advisory Services
“Wendi at Beancounter has been a god send and is cleaning up a huge mess that my former bookkeeper left us with when she quit.”
Wilton White Hill
“All the staff are fantastic and always friendly and helpful.”
Book onlineBook
ARP Bookkeeping Services
Why these companies made our list
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