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Accounting Plus Financial Services
- Understand
- Team
- Price
“Outstanding client-focused, professional and competent service with the best "post-sales" support, help and expertise that I have ever had with a professional service.”
Best Tax Preparation Services in Thornhill, ON
24 companies listed · all 24 in Thornhill · 10 open weekends · 19 rated 4.5+
Data verified October 16, 2026
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Harmonic Accounting
- Price
- Tax Return
- Knows
“They took the time to explain every aspect of the tax filing process in a way that was easy to understand, making the entire experience feel much less daunting.”
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Accountvisor Professional Corporation
- Knowledge
- Questions
- File
“I'm so glad we found AccountVisor and Justin for our first tax return filing in Canada; I had a lot of stress because of my relatively unusual circumstances, but AccountVisor gave me such a peace of mind.”
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Taraz, Chartered Professional Accountants
- Worry
- Knowledge
- Insights
“They were not only incredibly knowledgeable and up-to-date with all the latest tax laws but also extremely approachable and willing to explain complex financial details in simple terms”
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Parsian Accounting, Payroll, and Efile Tax Services.
- Family
- Accountant
- Respectful
“They have demonstrated an impressive understanding of the complex tax regulations and have guided me through every step of the process, ensuring compliance and minimizing risks.”
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Toranj Accounting Services
- Integrity
- Family
- Tax Filing
“Your meticulous attention to detail, astute financial insights, and proactive approach have been instrumental in navigating complex financial matters and ensuring the financial well-being of our clients.”
The 24 companies listed for Thornhill, 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: Thornhill, ON
All 24 companies we list here are in Thornhill itself. 21 of the companies on this page have a rating, from 3.8 to 5.0 across 752 reviews; 6 have 50 or more reviews and 19 are rated 4.5 or higher. When clients rate these companies on specific qualities, they most often praise professionalism (100%), responsiveness (65%) and value (57%). The topics that come up most in reviews of the companies on this page are "patient", "efficient" and "expertise". 9 are open on Saturdays and 4 on Sundays. Domain records put 12 websites of the companies on this page at ten or more years old; the oldest dates from 1999. 3 offer a free initial consultation and 1 is family- or locally-owned. We have a website on file for 23 of the companies on this page; 23 publish a contact page; 21 list a public email and 3 take bookings online. We count these figures across the companies on this page; hours and prices change, so confirm the details with the company before you book a consultation.
Are any tax preparers listed for Thornhill open on Saturdays or Sundays?
10 of the 24 companies show weekend hours. Many preparers extend their opening through the filing season and cut back once it ends, so treat weekend availability as seasonal rather than permanent. A quick call saves a wasted trip.
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Cariio Corp.
- Expertise
- Professional
- Company
“It is really hard to find trustworthy and expert person to fill out the forms and all other things related to this, and I am really grateful to find them.”
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Zen Tax
- Tax Laws
- Team
- Bookkeeping
“I've used multiple accounting firms in the past for my personal and small business bookkeeping matters and I can say that Zen Tax is without a doubt, the best in the GTA.”
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Nan's Tax Service
“There is a spiritual aspect to our lives -- when we give, we receive -- when a business does something good for somebody, that somebody feels good about them.”
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Nine Cross Border Tax Consulting Professional Corporation
- Team
- Expertise
“Alpesh went above and beyond, advising me on all my options, identifying the best paths forward, and showing me how to maximize my benefits and set myself up for success over the next year to five years”
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Fractal Accounting
- Financial
“I have been working with them for severals years now and its safe to say they are The best accounting and bookkeeping services for both businesses and individuals.”
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Prasad & Company
- Team
- Finance
“Team is always helpful and proactive in assisting with any finance questions you may have.”
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CTS & Associates
“I didn't know the benefits of tax credits for my business.”
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Siddiqi & Company
“Great friendly service”
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YSH CPA Professional Corporation 양성호 회계사
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Anklesaria CPA Professional Corporation
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Master Accounting & Tax Services
“We have been using Master Accounting and Tax Services for our family tax and small business needs, and we couldn't be happier with the exceptional service provided by Mitra.”
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IQ Accounting Professionals Corp
“I have been using their service in last two years and I am extremely happy with their services.”
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Jacques F. Liwanpo Chartered Accountant
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Global Tax Services Professional Corporation
“What should I do is just to give receipts then, they review and scan them, followed by making a accounting report quickly and reporting me and CRA.”
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Fiscal Expert
“I am also amazed at the tax strategy they have implemented over the last year that saved me money and significantly reduced my tax bill.”
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M Trust Accounting
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Taxnet Canada
“I've worked with Taxnet for many many years and every time had excellent consultation, accurate tax returns and overall great experience.”
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Lynxpoint Business Management and Consulting
Why these companies made our list
What clients say about companies in Thornhill
- “They really know their stuff, made sure I got all the deductions possible, and treated me like family.” — client of Taraz, Chartered Professional Accountants
- “I did my tax return with Justin. He is an amazing professional.” — client of Parsian Accounting, Payroll, and Efile Tax Services.
- “Services were exceptional. Tax filing was thorough and my return was maximized.” — client of Accountvisor Professional Corporation
Excerpts from public reviews of the companies listed on this page.
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