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Top Accounting Firms in Ontario

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

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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

18 of 77 accounting firms ranked on evidence held on 5 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 rankedAbout this edition
All accounting firms 18 rankedSMEs 17 ranked
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  1. Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
  2. Karen L. Dobson, Chartered Professional Accountant logo

    Karen L. Dobson, Chartered Professional Accountant

    Karen L. Dobson, Chartered Professional Accountant is an accounting firm serving the Burlington area and nearby communities.

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    On record: Based in Burlington, Ontario, Canada

  3. Kordowski Henry Chartered Professional Accountant logo

    Kordowski Henry Chartered Professional Accountant

    Tax · Accounting

    Kordowski Henry Chartered Professional Accountant is a small accounting practice in Toronto, Ontario.

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    On record: Based in Toronto, Ontario, Canada · Owner-run

  4. Larry Stolberg CPA logo

    Larry Stolberg CPA

    Tax · Accounting · Property · Also in United States and Wellington

    Larry Stolberg CPA is a tax practice based in Oakville, Ontario. Larry Stolberg concentrates on tax so that he can take part in planning and carrying out solutions for clients.

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    On record: Based in Oakville, Ontario, Canada

  5. LCPS Professional Corporation logo

    LCPS Professional Corporation

    Tax · Accounting · Auditing

    LCPS Professional Corporation, presented on its site as LCPS Chartered Professional Accountants LLP, is an accounting and business advisory firm in Thunder Bay, Ontario.

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    On record: Based in Thunder Bay, Ontario, Canada · Family-owned

  6. Legacy Consulting logo

    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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    On record: Based in Ontario, Canada · Owner-managed

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