Aydin CPA Professional Corporation
“Fatih was very experienced, intelligent and made filing taxes a very smooth process.”
Best Chartered Professional Accountants in Ottawa, ON
24 firms listed · all 24 in Ottawa · 4 open weekends · 20 rated 4.5+
Data verified October 21, 2026
Numetrica Accounting & Bookkeeping
“This is barely an exaggeration: I look *forward* to doing my taxes just to work with Numetrica.”
McCay Duff
“I called McCay Duff in a panic a few weeks before taxes were due, and they were able to calm me down and walk me through undoing the mess from the first accountant.”
Charles Ghadban Accounting
“He's like a father, brother, and close friend to every client and do everything he could to make you understand and help you out.”
Plug CPA - Bookkeeping & Tax Preparation Services
“Looking forward to working with Herman again for our small business and personal taxes.”
Taxes Made Simple. Lucas CPA
“I would definitely recommend Lucas, he did a great job with my taxes and even dealt with CRA directly on my behalf regarding a CERB benefit that I never took advantage of.”
The 24 firms listed for Ottawa, ON provide designated accounting and assurance services. What each says about its designation and engagement types comes from its own website; ratings and quotes come from public reviews.
Area overview: Ottawa, ON
All 24 firms we list here are in Ottawa itself. We have 64 firms in Ottawa on file; this page shows the highest-rated 24. The firms on this page are rated from 4.0 to 5.0 across 865 reviews; 5 have 50 or more reviews and 20 are rated 4.5 or higher. The topics that come up most in reviews of the firms on this page are "knowledge", "communication" and "expertise". 4 are open on Saturdays. The services the firms on this page list most often on their websites are bookkeeping (3), accounting (2), employment law (2) and workplace investigations (2). 10 have ten or more years of experience, the longest 28 years. 6 offer a free initial consultation. We have a website on file for all 24 of the firms on this page; 21 publish a contact page; 20 list a public email and 5 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.
Which CPA firms listed for Ottawa list their assurance services?
There is a website on file for all 24 firms listed here. Most say whether they perform audits, review engagements, compilations, or only tax and advisory work. That distinction matters more than size when a bank has asked for a particular report.
HW Partners
“They have always been diligent and responsive in their work and, most importantly, have provided thoughtful and comprehensive advice.”
Ken Jacob CPA
“Ken took the time to consult with me about a few tax questions I had regarding personal income tax, capital gains, etc.”
Al-Mulla Cpas Professional Corporation
“Although very likely to happen in this line of work, I can say with confidence that throughout these years, we never encountered any type of error, omission or deletion in our filing despite the complexity in some years.”
Perley-Robertson, Hill & McDougall
“This is by far the absolute greatest and most trustworthy law firm in the city.”
Adam Caithness Professional Corporation
“I'm a US CPA myself and I totally recommend Adam for tax filings and any other accounting matters”
Piazza Tanner
“Harland walked us through the entire signing process and explained every detail.”
Crepin Law Office
“He always made himself available to answer any of our questions and answered them with all the details necessary to make sure our questions were answered.”
Laura Setzer
“If you are looking for a professional person that puts her 100 percent on the case she and her amazing team are the one that you need to work with.”
Ggfl
“For many years, GGFL has done an excellent job of managing all of the accounting for our Corporate and Personal needs.”
Balanced Solutions Inc.
“Did with my semi complex return with ease and I am 100% recommending Carly to others”
Dutrisac & Associates CPA
Black & Associates
“I not only recommend attorney Desneiges Mitchell (black & Associates) but I guarantee once you have used her service you too will look no further”
Hakimi Law Office
“Hakimi prepared an amazingly strong application package for us which we would definitely not be able to prepare on our own.”
Maclaren Corlett
“Maclaren Corlett is the law firm I call first.”
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MAC Legal
“Melanie is an excellent and diligent lawyer who truly cares for her clients and offers services in a highly professional manner.”
Bouris, Wilson
“Bouris Wilson provides my business with complete accounting services, provides advisory on all financial matters, and solves all the little problems that inevitably come up.”
Aquilina Law
“Martin and his team are very knowledgeable in business law and is someone that we can trust with our business when it comes to legal advice.”
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![Majdi Ibrahim, CPA Professional Corporation [treehouse Cpa]](http://cdn.legaldirectorate.ca/Assets/LW/CA/profile/4/93/627c08693cce68b4f925218c82ae4934/IMG/1.jpg)
Majdi Ibrahim, CPA Professional Corporation [treehouse Cpa]
“He was quick, easy to work with, knowledgeable and provided great value for money.”
Why these companies made our list
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