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Objections and appeals
Draft — unverified
An objection is how a taxpayer formally disputes an assessment. It is the gateway to every remedy beyond CRA's own discretion: without a valid, timely objection there is no appeal to the Tax Court, and the assessment stands however wrong it may be. The deadline is the single most consequential fact in individual tax, because missing it can extinguish a right that no amount of merit will restore. This tutorial covers what may be objected to, the deadline and how it is measured, what happens during and after the objection, the extension application for those who missed it, and the route to the courts.
Draft — not verified against a CRA source.
This was drafted by a language model from general knowledge, with no source
document behind it. Treat the structure and method as a starting point, and
treat every specific — box numbers, form numbers, dollar amounts, deadlines —
as unconfirmed until you check it below.
How to work through this tutorial
This follows a dispute from assessment to court:
1. Establish what can be objected to — and what cannot.
2. Establish the deadline, which is the fact everything else depends on.
3. File the objection, with what it needs to contain.
4. Understand what happens while it is under review, including on collection.
5. Understand the outcomes and what each permits next.
6. Handle the taxpayer who has already missed the deadline.
7. Understand the appeal route to the Tax Court.
8. Check your work against the common errors.
9. Verify every specific against CRA's published guidance before relying on it.
Where a taxpayer may be near their deadline, establish the notice date before anything else.
What can be objected to
An objection disputes an **assessment or reassessment** — CRA's determination of tax, interest and penalties for a year. It also reaches certain determinations, including benefit entitlement decisions, which have their own equivalent process.
Several things are **not** objectionable, and directing a taxpayer to object to one of them wastes months.
A discretionary decision under the taxpayer relief provisions is not an assessment. A refusal to cancel penalties or interest is reviewed by a second-level review within CRA and, beyond that, by judicial review in the Federal Court — not by objection and not by the Tax Court.
A service complaint — how someone was treated, delays, conduct — goes to CRA's service complaints process and then the Taxpayers' Ombudsperson. The Foundations topic makes this distinction.
And a nil assessment, where no tax is payable, generally cannot be objected to because there is nothing to dispute, even where the taxpayer disagrees with a figure in it that will matter later.
An objection can also be made where CRA has not assessed at all within a defined period after a return was filed. Confirm that route; it is uncommon but real.
The deadline
For an individual, the deadline to file a notice of objection is the **later** of two measures: one year after the filing due date for the year in question, and ninety days after the date of the notice being objected to.
Both halves matter and taxpayers rarely know either. The one-year measure is generous for a recently assessed return, since it can run well beyond ninety days from the notice. The ninety-day measure is what governs a reassessment issued years later.
The date that counts is the **date of the notice**, not the date the taxpayer received it or opened it. A taxpayer registered for electronic delivery who did not check their account has still had the clock running.
For a corporation the deadline is different, so do not carry the individual rule across.
A reassessment starts a fresh objection period, but only in respect of the matters it deals with. A taxpayer who let the original deadline pass cannot use a later reassessment on an unrelated point to reopen the original issue.
Because the consequence of missing this deadline is the loss of the entire dispute route, an agent's habit should be to establish the notice date early in any call where a taxpayer expresses disagreement — before discussing the merits at all.
Filing, and what happens next
An objection may be filed through CRA's online services, on the prescribed form, or by letter. What matters is that it identifies the taxpayer, the year, the notice being objected to, and the reasons — the facts and the basis for the dispute.
A bare statement of disagreement is a weak objection. The reasons and the relevant facts should be set out, with supporting documents, because the review is conducted on what is provided.
Objections are reviewed by CRA's Appeals branch, which is separate from the area that made the assessment. That separation is the point: the review is independent of the original decision-maker.
On **collection**, the position differs by amount type and this is where careless advice does damage. For income tax amounts under objection, collection action is generally restricted while the objection is outstanding. That restriction does **not** apply to all amounts — certain amounts remain collectible during a dispute. And it does not stop **interest** from accruing on any amount ultimately upheld. A taxpayer who stops paying entirely because they objected may face a large interest charge if they lose. Confirm the position for the specific amount before advising.
Processing takes a long time, and honesty about that is better than optimism. Complex objections take substantially longer than simple ones.
Outcomes, and the missed deadline
An objection can be allowed in full, allowed in part, or confirmed — meaning the assessment stands. Where it is allowed or partly allowed, a reassessment is issued.
Where the taxpayer remains dissatisfied, the next step is an appeal to the Tax Court of Canada. Crucially, this right depends on having filed a valid objection: **there is no appeal without one**. That is what makes the objection deadline so consequential.
A taxpayer may also appeal to the Tax Court where CRA has not decided the objection within a defined period after it was filed, rather than waiting indefinitely.
For a taxpayer who has **missed** the deadline, an application for an extension of time may be made. It goes first to CRA, and if refused, to the Tax Court. It is subject to its own outer limit measured from the original deadline, beyond which nothing can be done.
The application must show the taxpayer intended to object and was unable to act or had a bona fide intention, that granting it would be just and equitable, and that the application was made as soon as circumstances permitted. It is not granted simply because the taxpayer did not know about the deadline.
So the honest counsel to someone approaching a deadline is to file now, however incomplete, and supplement later — rather than to prepare a perfect objection that arrives late.
The Tax Court and beyond
The Tax Court of Canada hears appeals from confirmed or partly allowed objections. It is an independent court, not part of CRA.
It operates two procedures. An **informal procedure** applies where the amounts in dispute are below defined thresholds, or where the taxpayer elects it; it is simpler, faster, less costly, and the taxpayer may be represented by an agent rather than counsel. A **general procedure** applies to larger disputes and follows fuller court process.
An appeal from the Tax Court goes to the Federal Court of Appeal, and from there, with leave, to the Supreme Court of Canada.
Separately, decisions that are not assessments — discretionary relief refusals, for instance — are challenged by judicial review in the Federal Court, which asks whether the decision was reasonable and properly made rather than deciding the tax question itself. That is a different remedy with different outcomes and a taxpayer should understand the distinction before pursuing it.
An agent's role here is orientation rather than advice. Explaining that an independent court exists, that the informal procedure is designed to be accessible, and that the route runs through the objection, gives a taxpayer an accurate picture of their options.
Common errors
Discussing the merits of a disagreement before establishing the notice date. The deadline governs everything.
Measuring the deadline only from the notice date. For individuals it is the later of ninety days from the notice and one year from the filing due date.
Measuring from the date the taxpayer received or opened the notice. It runs from the notice date.
Applying the individual deadline to a corporation.
Assuming a later reassessment reopens an issue from an earlier one. It reopens only the matters it deals with.
Directing a taxpayer to object to a discretionary relief refusal. That is second-level review and then judicial review in the Federal Court.
Directing a service complaint into the objection process.
Telling a taxpayer that objecting stops collection and interest. The collection restriction depends on the amount type, and interest continues on amounts ultimately upheld.
Advising a taxpayer near the deadline to take time preparing a complete objection. File now, supplement later.
Treating the extension application as routine. It has conditions and an outer limit, and ignorance of the deadline is not a ground.
Suggesting an appeal is available without a valid objection. It is not.
What to verify this tutorial against
This was drafted without a source document. The deadline, the extension limits and the collection position should all be confirmed precisely — a wrong answer on any of them can cost a taxpayer their dispute or a great deal of interest.
CRA's guidance on objections and appeals sets out the deadline, the filing routes, the prescribed form, and what an objection should contain.
The Income Tax Act sets out the objection deadline for individuals and corporations, the extension application and its outer limit, and the right of appeal.
CRA's guidance on collections during a dispute sets out which amounts are subject to the collection restriction and which are not, and confirms that interest continues to accrue.
The Tax Court of Canada publishes its own material on the informal and general procedures, including the monetary thresholds for the informal procedure.
CRA's taxpayer relief guidance covers the second-level review of a relief refusal and the route to judicial review, which is not an objection.
The Foundations topics on reading a notice of assessment and on the structure of the system cover the notice date and the service-complaint boundary respectively.
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Claims to confirm
These are the checkable specifics from this tutorial — the details most
likely to be wrong in a drafted page. Confirm each against CRA guidance.
0 of 16 confirmed.
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deadline
The deadline for an individual to file a notice of objection is the later of one year after the filing due date for the year and 90 days after the date of the notice of assessment or reassessment.
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deadline
The objection deadline runs from the date of the notice, not the date the taxpayer received or opened it.
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deadline
The objection deadline for a corporation differs from the deadline for an individual.
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deadline
A taxpayer may appeal to the Tax Court of Canada where CRA has not decided an objection within 90 days of it being filed.
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deadline
An application for an extension of time to object is subject to an outer limit of one year after the expiry of the original objection deadline.
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deadline
A reassessment starts a fresh objection period only in respect of the matters it deals with.
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form
A notice of objection may be filed through CRA's online services, on Form T400A, or by letter setting out the facts and reasons.
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limit
The Tax Court of Canada operates an informal procedure for disputes below defined monetary thresholds or where elected, and a general procedure for larger disputes.
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other
Objections are reviewed by CRA's Appeals branch, which is separate from the area that made the assessment.
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other
A valid notice of objection is a precondition to appealing to the Tax Court of Canada.
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other
A taxpayer who missed the objection deadline may apply for an extension of time, first to CRA and then to the Tax Court if refused.
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other
A discretionary decision under the taxpayer relief provisions is not an assessment and cannot be objected to; it is challenged by second-level review and then judicial review in the Federal Court.
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other
A nil assessment generally cannot be objected to.
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other
For income tax amounts under objection, collection action is generally restricted while the objection is outstanding, but this does not apply to all amount types.
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other
Interest continues to accrue during an objection on any amount ultimately upheld.
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other
Appeals from the Tax Court of Canada go to the Federal Court of Appeal, and from there to the Supreme Court of Canada with leave.
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16 claim(s) still unconfirmed. Confirm them
above first — verifying the page while its specifics are outstanding would
defeat the purpose of listing them.