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Late-Filed Objection Applications: When the CRA Allows Them in Canada

Missed the CRA objection deadline? Learn how an application for extension of time works in Canada, the one-year limit, the criteria and what to include.

Tax4 min readTSLBy the Treadstone Law Team · CanadaUpdated November 13, 2026
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Key takeaways
  • If you missed the deadline to object, you may apply to the Minister for an extension of time, but only within one year after the deadline expired.
  • You must show you were unable to act or had a bona fide intention to object, that an extension is just and equitable, and that you applied as soon as circumstances permitted.
  • If the Minister refuses, or does not decide, you may apply to the Tax Court of Canada within a set time.

You received a notice of assessment, thought about disputing it, and then the objection deadline passed. Illness, a move, a misunderstanding or simply bad timing can all cause this. It is not necessarily the end of the road.

The Income Tax Act has a process for late objections. It is strict, and it has a hard outer limit, so the timing of your next step matters. This article explains how it works in general terms.

This article covers Canadian federal tax law, which applies in every province.

What an extension of time application is

If no notice of objection was made in time, you may apply to the Minister for an extension of time to object. The application must give the reasons for the delay and be addressed to the Chief of Appeals, with a copy of the notice of objection. The Minister must consider it promptly and tell you the result in writing.

If the Minister grants the extension, the objection is treated as served on the day the Minister's decision is sent to you. The Minister may also accept an application that was not filed exactly as required.

Know whether you are actually late

Before applying, check the deadline. For an individual who is not a trust, and for a graduated rate estate, the deadline is the later of one year after the filing-due date for the year and 90 days after the notice of assessment was sent. Other taxpayers, such as corporations, have 90 days after the notice was sent. The time runs from the day the notice was sent, not the day you received it.

Some objections have only a 90-day limit even for individuals, including loss determinations and RRSP or TFSA over-contribution assessments. Some items cannot be objected to at all, such as a statement of account or an auditor's proposal letter. A late-filed or premature objection may also be invalid.

The one-year limit and the criteria

An extension can be granted only if the application is made within one year after the objection deadline expired. If more than one year has passed, no extension can be granted under these rules. The CRA advises applying as soon as possible, and no later than one year after the date you had to file the objection.

Within that year, you must also meet the following conditions:

Whether your reasons meet these tests depends on your facts, so explain them clearly and honestly.

What to include and where to send it

Address the application to the Chief of Appeals. Anything you can show about why you could not act earlier, or that you meant to object, is worth gathering.

If the Minister says no, and what to do next

If the Minister refuses the extension, or 90 days pass without a decision, you may apply to the Tax Court of Canada. That application must be made within 90 days after the Minister's decision notice was mailed. The Court may grant or dismiss it and may set conditions. The one-year outer limit still applies, so the Court cannot grant an extension if more than a year has passed since the deadline.

If you are no longer sure of your options, act quickly:

Separately, you may still be able to ask for relief on penalties or interest, which is a different request from an objection. Cancelling or waiving them can be considered up to ten calendar years after the end of the year concerned.

Frequently asked questions

Is there any way around the one-year limit?

If more than one year has passed since the objection deadline expired, no extension can be granted under the Act's extension provisions. A separate route may exist if you are an individual (other than a trust) or a graduated rate estate, because you may ask for a reassessment to claim a refund or reduction up to 10 calendar years after the end of the taxation year, but this is a request for adjustment, not an objection. A lawyer or accountant can tell you which, if any, apply.

Does the 90 days run from when I received the notice?

No. The 90 days run from the day the notice of assessment was sent, not the day it was received. Check the date printed on the notice.

What happens if the extension is granted?

The objection is treated as served on the day the Minister's decision is sent to you. The Minister then reconsiders the assessment and can vacate, confirm, vary or reassess it.

Can I go to court if the CRA refuses?

Yes. If the Minister refuses, or 90 days pass with no decision, you may apply to the Tax Court of Canada within 90 days after the Minister's decision notice was mailed. The Court may grant or dismiss the application and may set conditions.

Sources

Links go to official government, court and regulator pages. The law changes — confirm you are reading the current version.

This article is general information, not legal advice. Reading it does not create a lawyer-client relationship. Canadian laws, tax rates, and government programs change, and how the law applies depends on your specific facts. For advice about your situation, speak with a tax lawyer or accountant. Reach us at 1-844-900-1070 or send our Team a message.

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