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Top Accounting Firms in Ontario

30 of 77 accounting firms ranked on evidence in the Q4 2026 edition.

Between them, the 77 accounting firms on this page cover tax (45), accounting (43), government (14) and reporting (9). They also list work in Toronto, London, Hamilton and New York. 77 of them have written a profile you can read before you get in touch.

TrustList ranking

Q4 2026 edition

30 of 77 accounting firms ranked on evidence held on 12 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

How this is ranked About this edition

All accounting firms 30 ranked SMEs 29 ranked

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Concise Tax Service Inc.
Tax · Government · Also in London
Concise Tax Service Inc. is an accounting and tax practice in London, Ontario, serving individuals and businesses across Canada.
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Why #1: Based in London, Ontario, Canada · In business 10+ years · professional accreditation, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Durward Jones Barkwell & Company LLP
Durward Jones Barkwell & Company LLP, or DJB, is a firm of chartered professional accountants in Ontario.
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Why #2: Based in Niagara, Hamilton and Halton, Ontario, Canada · Founded 1940, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Davis Martindale LLP
Davis Martindale LLP is a Canadian accounting firm with offices in London and Toronto, Ontario.
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Why #3: Based in London and Toronto, Ontario, Canada · In business 55+ years, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Goodman Mintz, LLP
Tax · Accounting · Government · Also in Quebec
Goodman Mintz, LLP is a firm of chartered professional accountants in Toronto, Ontario.
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Why #4: Based in Toronto, Ontario, Canada · In business 44+ years, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Hogg, Shain & Scheck
Not for Profit · Tax · Accounting
Hogg, Shain & Scheck is a boutique accounting practice in the Greater Toronto Area. It has worked for more than 43 years and serves clients across southern Ontario.
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Why #5: Based in Greater Toronto Area, Ontario, Canada · In business 43+ years · Boutique, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
C & V Income Tax Services
Tax · Property
C & V Income Tax Services prepares income tax returns in London, Ontario, and has done so since 1988.
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Why #6: Based in London, Ontario, Canada · Founded 1988, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Jaggi Accounting Services Inc
Accounting · Residential · Also in Toronto
Jaggi Accounting Services Inc is an accounting practice in Mississauga, Ontario.
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Why #7: Based in Mississauga, Ontario, Canada · Founded 1989, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Accurate Accounting & Tax Service
Ontario accounting practice offering small business bookkeeping, payroll, tax preparation and business coaching since 1990
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Why #8 (shared): Based in Ontario, Canada · Founded 1990 · Sole proprietor, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
ANG CPA Professional Corporation
Business Services
Chartered accounting practice in Ontario handling bookkeeping, audits and tax returns for small firms, charities and individuals
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Why #8 (shared): Based in Vaughan, Ontario, Canada · Founded 1990, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
HR Associates
Not for Profit
Ontario provider of interim professionals, recruitment, assessment and HR consulting for public and not-for-profit organisations
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Why #10: Based in Ontario, Canada · Founded 1996, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Bowerman Jack CPA
A professional corporation of chartered accountants in Nepean, Ontario, handling accounts and tax for clients of every size
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Why #11: Based in Nepean, Ontario · Founded 1997, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Afshan Ahmad CPA Professional Corporation
Tax · Accounting
Afshan Ahmad CPA Professional Corporation is a chartered accounting practice that works virtually for clients across Ontario, with roots in Whitby and the Durham Region going back…
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Why #12 (shared): Based in Whitby, Ontario, Canada · Founded 2001, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Alan McPherson CPA
Tax
Alan McPherson CPA is a chartered professional accountant's practice in Thornbury, Ontario.
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Why #12 (shared): Based in Thornbury, Ontario · In business 25+ years, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
First Tax
Tax · Accounting · Government · Also in Canada
First Tax prepares income tax returns in Kingston, Ontario, and has served the area since 2002.
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Why #14 (shared): Based in Kingston, Ontario, Canada · Founded 2002, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Bytown Accounting & Tax Services.
Tax · Accounting · Corporation
Bytown Accounting & Tax Services. is an accounting firm in Ottawa that has handled bookkeeping and tax work for businesses since 2002.
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Why #14 (shared): Based in Ottawa, Ontario, Canada · Founded 2002 · Family business, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Bytown Accounting
Tax · Accounting · Corporation
Bytown Accounting is a family-run bookkeeping and tax practice in Ottawa, Ontario, incorporated in August 2002.
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Why #14 (shared): Based in Ottawa, Ontario, Canada · Founded 2002 · Family-run, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Hotay Professional Corporation
Hotay Professional Corporation is an accounting firm in Mississauga, Ontario, serving businesses, professionals and families across the province.
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Why #17: Based in Mississauga, Ontario, Canada · Founded 2003, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
GBC
Richmond Hill HR consultancy offering project work and outsourced human resources support to small and mid-sized organisations
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Why #18 (shared): Based in Richmond Hill, Ontario, Canada · Founded 2004, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
A Garg CPA Professional Corporation
Tax · Accounting · Reporting
A Garg CPA Professional Corporation is an accounting and tax firm in Burlington, Ontario, serving individuals and businesses in and around Toronto since 2004.
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Why #18 (shared): Based in Burlington, Ontario, Canada · Founded 2004, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Douglas Spence CPA, CA Professional Corporation
Tax · Accounting · Medical · Also in Canada
Douglas Spence CPA, CA Professional Corporation trades as Douglas Spence & Associates CPAs, a licensed public accounting firm in Oakville, Ontario that also serves the surrounding…
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Why #20: Based in Oakville, Ontario, Canada · Founded 2005, as stated on its own website, read 29 Sept 2026
Not yet on record: client reviews, vetting.
Legacy Consulting
Tax · Accounting
Legacy Consulting provides accounting and business consulting in Ontario. It handles day-to-day bookkeeping needs for owner-managed organisations, foundations and families.
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Why #21 (shared): Based in Ontario, Canada · In business 20+ years · Owner-managed, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Canadian Accounting & Financial Services
Canadian Accounting & Financial Services is an accounting and tax practice in London, ON, led by Mohamed Al Bayoumi, who brings two decades of work in accounting, tax and…
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Why #21 (shared): Address in Ontario · In business 20+ years, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Aneal R. Thansingh & company
Aneal R. Thansingh & company is an accounting practice based in Mississauga, Ontario, that serves business and personal clients across the GTA.
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Why #21 (shared): Based in Mississauga, Ontario · In business 20+ years, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.
Alan I. Stern, Chartered Accountant
Alan I. Stern, Chartered Accountant is a small practice in North York, Ontario.
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Why #21 (shared): Based in North York, Ontario, Canada · In business 20+ years · Small practice, as stated on its own website, read 28 Sept 2026
Not yet on record: client reviews, vetting.

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Top Accounting Firms in Ontario

Concise Tax Service Inc.

Durward Jones Barkwell & Company LLP

Davis Martindale LLP

Goodman Mintz, LLP

Hogg, Shain & Scheck

C & V Income Tax Services

Jaggi Accounting Services Inc

Accurate Accounting & Tax Service

ANG CPA Professional Corporation

HR Associates

Bowerman Jack CPA

Afshan Ahmad CPA Professional Corporation

Alan McPherson CPA

First Tax

Bytown Accounting & Tax Services.

Bytown Accounting

Hotay Professional Corporation

GBC

A Garg CPA Professional Corporation

Douglas Spence CPA, CA Professional Corporation

Legacy Consulting

Canadian Accounting & Financial Services

Aneal R. Thansingh & company

Alan I. Stern, Chartered Accountant

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