To file a name change with CPA Ontario, complete the appropriate form:

Firm Update Form (Form4-6A) - for all firms except professional corporations
Professional Corporation Update Form (Form 4-6B)

Note that there are additional considerations and restrictions for professional corporations and limited liability partnerships due to legislative requirements. For example, the articles of incorporation of your professional corporation must be amended changing its name. Firms may wish to seek clarification or legal advice before making any changes to the name of their professional corporation. Also, for limited liability partnerships, Ministry-approved Form 6 is required for a firm name change.

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Firm Names FAQs