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MMS Accounting & Bookkeeping Services
“He is very organized and answers all of your questions with much detail.”
Best Tax Preparation Services in Ajax, ON
15 companies listed · 13 in Ajax · 3 open weekends · 10 rated 4.5+
Data verified October 21, 2026
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GTP TAX Services Inc.
“Friendly, easy going and he gets the job done to your satisfaction.”
Integrity Accounting Services
“Every year you guys do a great job, even when I am late to file you always do your best to get things in on time.”
Anna Armata - Chartered Professional Accountant
“I will continue to hire Anna for any accounting needs that arise in the future.”
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Kevin L. Derbyshire, CPA
“I have, and will continue, referring people to Kevin and I highly recommend his tax accounting services.”
Gibson & Graham
“Always great to work with, and really,really helpful”
The 15 companies listed for Ajax, 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: Ajax, ON
13 of the 15 companies we list are based in Ajax; the other 2 serve Ajax from Oshawa (16 km) and Markham (18 km). 12 of the companies on this page have a rating, from 4.2 to 5.0 across 887 reviews; 3 have 50 or more reviews and 10 are rated 4.5 or higher. 3 are open on Saturdays and 2 on Sundays. 5 have ten or more years of experience, the longest 15 years. 1 offers remote or virtual consultations; 2 offer a free initial consultation and 2 are family- or locally-owned. We have a website on file for 14 of the companies on this page; 11 publish a contact page; 8 list a public email and 3 take 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 tax preparers outside Ajax shown on this page?
13 of the 15 companies are in Ajax itself. The rest come from other towns within 20 km. Returns are prepared remotely, so provincial knowledge matters more than the drive. Distances are straight-line.
Quadri and Smith
“If you want things done right, this is the place!”
Whitney Accounting - Tax and Books
“I love your service and will choose you over and over again .”
Patricia Cooper and Associates
“Alwasy responsive for any questions that I have..”
Indie Bookkeeping
TLH Accounting
“Tracy is very experience accountant and always give the right advice.”
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Minerva H. Garcia Accounting & Tax Services
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S & M Tax Services
Easy Taxes & Accounting
“I came in without an appointment, Shannon was able to assist me within a few minutes.”
Sharptax Consulting
“I have using his services since 2020 and I am extremely satisfied with their services.”
Why these companies made our list
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