Easy Taxes & Accounting
“I've done taxes every year for most of my life (go figure) and Easy Tax has been one of the easiest and quickest experiences I've had.”
Best Accountants in Oshawa, ON
19 firms listed · all 19 in Oshawa · 5 open weekends · 18 rated 4.5+
Data verified October 21, 2026
Tax Partners Oshawa
“Very grateful to Mahad and his team for the excellent service, once again satisfied with their professionalism and experience with my taxes.”
YBL Accounting Services
“Appreciated the detail breakdown of scenarios & the patience their team had with our many questions”
Books In Line
“I have used books in line for years and am so happy with their service!”
Kiessling & Associates
“Denise and her team always seek to support you as a client, and will look for ways to be of service!”
Black & White Accounting Services
“Very fast and so nice people thank you so much for your help ☺️ my son gave his sister chocolate ❤️ thank you again”
The 19 firms listed for Oshawa, 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: Oshawa, ON
All 19 firms we list here are in Oshawa itself. We have 22 firms in Oshawa on file; this page shows the highest-rated 19. The firms on this page are rated from 3.7 to 5.0 across 1,281 reviews; 4 have 50 or more reviews and 18 are rated 4.5 or higher. The topics that come up most in reviews of the firms on this page are "communication" and "efficient". 5 are open on Saturdays and 3 on Sundays. Domain records put 6 websites of the firms on this page at ten or more years old; the oldest dates from 2002. 4 offer a free initial consultation and 2 are family- or locally-owned. We have a website on file for 15 of the firms on this page; 14 publish a contact page; 8 list a public email and 2 take bookings online. We count these figures across the firms on this page; hours and prices change, so confirm the details with the firm before you book a consultation.
Can I book a consultation online with accounting firms listed for Oshawa?
2 of the 19 firms accept booking requests on their websites. A firm without that option usually works by phone or email. Whichever route you take, mention your business type and whether you are incorporated, because it decides who in the firm should be on the call.
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Unique Accounting Services
“Fantastic service, will be going back for sure.”
Neahr Accounting Firm
“Rob is very personable, unlike other firms, he didn't waste my time, and helped me understand sooooo much about taxes that I never even knew.”
Double W Accounting
“Our family switched to Double W a couple of years ago and have been so pleased that some of our extended family has also started using him”
Accounting by Lisa Sutton
“I've done my taxes there the last few years & the service was excellent.”
SNA Accounting and Tax Consulting CPA Professional Corporation
“They have saved me thousands of dollars by using deductions that I didn't know about.”
DMM Accounting Services
“Donna provides a valuable service, is trustworthy and gives sound advice with making the best informed decisions having extensive knowledge of the Canadian tax system.”
Mark Robbins CPA Professional Corporation
“We've been going to Mark for years to have our taxes done, he's excellent.”
Royce Group
“CRA had contacted Greg in regards to some questionable deductions and were clarified by Greg”
Smith Chappell Marsh Vilander
GRH Accounting and Tax Service
Complete Accounting
“Noreen is the best in the business.”
Susanne Hillebrand, Cpa, CMA
Roche Financial Group
“They helped me resolve are my tax issues will definitely come back.”
Why these companies made our list
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