Top 40 Audit Services in Ontario
The Best of December 2025Looking for a top audit firm in Ontario?
Auditing involves working with an auditor, or third-party, to look into your business and financial records and processes. Auditing helps uncover areas of non compliance or inefficiencies in your accounting processes, which makes it easier to address these issues. The auditing process includes requesting financial documents, preparing and presenting an audit plan that outlines timeline and information needed for the audit, conducting the audit both on-site and remotely, and planning and presenting findings.
To assist you in your search for a partner, we’ve compiled this list of the top audit services in Ontario. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Ontario Audit Firms
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31Undisclosed10 - 49 employeesWindsor, CanadaCapital Assist is an Accounting company. Their team is headquartered in Windsor, Canada and specializes in Accounting and Business Valuation Services.Read More
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32$1,000+50 - 249 employeesBrampton, CanadaAccounting Farm is an Accounting company launched in 2021. The team offers Accounting and Finance & Accounting Outsourcing (FAO) and is headquartered in Ahmedabad, India and Brampton, Canada.Read More
Industries
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33Undisclosed250 - 999 employeesToronto, CanadaRichter LLP is a Business Consulting company launched in 1926. The team specializes in Business Consulting and Accounting.Read More
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34Undisclosed2 - 9 employeesToronto, CanadaReach Recruitment Group is an Accounting company in Toronto, Canada. Founded in 2012, the team provides Accounting and Financial Consulting.Read More
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35Undisclosed2 - 9 employeesOttawa, CanadaClover Accounting is an Accounting company. Their small team is based in Ottawa, Canada and specializes in Accounting. The company was launched in 2017.Read More
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36Undisclosed2 - 9 employeesEast Gwillimbury, CanadaBates Chartered Professional Accountants is a small Accounting company located in East Gwillimbury, Canada. Their services include Accounting and Business Valuation Services.Read More
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37UndisclosedFreelancer employeesHarrowsmith, CanadaGrasshopper Hill Bookkeeping is a Harrowsmith, Canada-based Accounting company. Their services include Accounting and Funding & Investment.Read More
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38Undisclosed10 - 49 employeesMississauga, CanadaERP consulting and SI and Accounting company ChartersField Consultant LLP is in Ahmedabad, India and Mississauga, Canada. Founded in 2019, the team focuses on ERP consulting and SI and Accounting.Read More
Industries
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39UndisclosedFreelancer employeesOttawa, CanadaIn Ottawa, Canada, Ottawa Consultants is a small Accounting company. The team focuses on Accounting and Public Relations.Read More
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