Best Accountants in Ajax, ON
15 firms listed · all 15 in Ajax · 3 open weekends · 10 rated 4.5+
Data verified October 21, 2026
Mybooks Accounting
CPA Accounting & Tax
Integrity Accounting Services
Anna Armata - Chartered Professional Accountant
Grant Johnston AND Associates Inc.
The 15 firms listed for Ajax, 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: Ajax, ON
All 15 firms we list here are in Ajax itself. We have 16 firms in Ajax on file; this page shows the highest-rated 15. 13 of the firms on this page have a rating, from 4.2 to 5.0 across 235 reviews; 1 has 50 or more reviews and 10 are rated 4.5 or higher. 3 are open on Saturdays and 1 on Sundays. The services the firms on this page list most often on their websites are accounting services (2), tax preparation (2) and tax services (2). Domain records put 4 websites of the firms on this page at ten or more years old; the oldest dates from 2012. 3 offer a free initial consultation and 3 are family- or locally-owned. We have a website on file for 14 of the firms on this page; 11 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 Ajax?
2 of the 15 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.