A Notice of Objection is the formal way to dispute a CRA assessment or reassessment, filed within 90 days to have the matter reviewed by the independent Appeals Division.
If you disagree with how the CRA assessed your return, you file a Notice of Objection. This moves your file to the Appeals Division, which reviews it independently of the auditor or assessor who made the original decision. It is the required first step before you could take a matter to the Tax Court of Canada.
The deadline is strict: generally 90 days from the date on the notice for a corporation, and 90 days or one year after the filing due date for an individual, whichever is later. A well-supported objection, with documents and a clear explanation, resolves many disputes without ever reaching court.
The CRA reassesses your corporation and denies a $30,000 expense. You file a Notice of Objection within 90 days, attaching the invoices and explaining the business purpose, and Appeals reverses the reassessment.
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Reviewed and fact-checked by Udit Gupta
Ex Big 4 — Ernst & Young, Deloitte · International & cross-border tax specialist · CPA Canada (In-Depth Tax Program) · Chartered accountant, ICAI & MIA
Udit Gupta has over 15 years of experience helping corporations and business owners with corporate structuring, corporate tax filing, bookkeeping, payroll, GST/HST, cross-border tax and CRA representation. Big 4 trained at Ernst & Young and Deloitte, and qualified as a chartered accountant in India and again in Malaysia, he founded his accounting practice in 2014 to serve entrepreneurs, startups and non-resident business owners across Canada. View full member bio.
The Institute of Chartered Accountants of India — member 521458 · Malaysian Institute of Accountants — member CA 44667 · Ex Big 4: Ernst & Young, Deloitte · CPA Canada (In-Depth Tax Program), completed 19 Dec 2023 · In-Depth GST/HST Part I, 12 Jul 2022 · Part II, 5 Jul 2023
Editorial policy. Every page is researched against primary sources — the Income Tax Act, CRA publications and CPA Canada guidance — and every rate or threshold is stated with the tax year it applies to.
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