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Can the Tax Court of Canada Review a Refused CRA Relief Request?

Learn why the Tax Court of Canada generally cannot review a refused CRA taxpayer relief request, and when Federal Court review or an interest appeal fits.

Tax5 min readTSLBy the Treadstone Law Team · CanadaUpdated November 1, 2026
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Key takeaways
  • A refused request to cancel or waive penalties or interest is an administrative decision by the Minister, not something you appeal to the Tax Court.
  • After a refusal, the CRA offers a second administrative review, and Federal Court judicial review generally must be started within 30 days.
  • The Tax Court can hear an appeal where the only issue is interest assessed under the Income Tax Act, using the informal procedure.

You asked the CRA to cancel penalties or interest, and the answer was no. It is natural to assume the Tax Court of Canada is the next stop, since that is where many tax disputes end up. For this type of request, that is generally not the right forum.

The right path depends on what exactly you are challenging: the refusal of relief, or the assessment of interest itself. Each has its own route and its own clock, and some of those clocks are short. This article explains the difference so you can pick the right forum in time.

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

Why a refused relief request is not a Tax Court appeal

The Minister may waive or cancel penalties or interest under section 220(3.1) of the Income Tax Act on or before the day that is ten calendar years after the end of the taxation year. That is a CRA administrative relief decision, not a Tax Court appeal.

In plain terms, taxpayer relief is a discretion the Minister may exercise. It is different from arguing that an assessment is wrong. A Tax Court appeal asks the Court to vacate or vary an assessment after the Minister has confirmed it or reassessed. A relief request asks the CRA to forgive an amount that may be correctly calculated.

The ten-year limit matters because it caps how far back you can ask. If the year you are dealing with is close to that limit, check the dates early rather than waiting.

What you can do after a refusal

If a taxpayer relief request is refused, the CRA offers a second administrative review. This is a further look inside the CRA, so it is worth considering if you have new information or think something was missed.

If you think the CRA was not fair and reasonable, you can apply to the Federal Court for judicial review within 30 calendar days of receiving the decision. The Federal Courts Act says an application for judicial review must be made within 30 days after the decision is first communicated, and a Federal Court judge may allow a further period.

What the Tax Court can do about interest

The Tax Court is not closed to interest disputes. Under the informal procedure, it can hear an appeal where the only subject-matter is interest assessed under the Income Tax Act. This is about the assessment of interest, which is a different question from whether the CRA should forgive it as a matter of discretion.

The informal procedure is also open where the amounts in issue are $25,000 or less, or the loss in issue is $50,000 or less, and you elect it. You may appear in person or be represented by counsel or an agent, and the Court is not bound by technical rules of evidence.

There is an exception. In an interest-only informal appeal, the Attorney General may apply to move the case to the general procedure, and the Court must grant it if the interest in issue exceeds $25,000. Interest that accrued after the notice of assessment is left out of that calculation.

An informal procedure judgment is not treated as a precedent for any other case.

Comparing the two routes

QuestionTax Court (interest appeal)Federal Court (relief refusal)
What is challengedThe assessment of interest, where interest is the only issueThe CRA's refusal of relief, as not fair and reasonable
Starting pointNotice of objection, then confirmation or reassessmentThe relief decision after the CRA's review
Deadline90 days from the notice of confirmation or reassessment30 days from when the decision is communicated
Late filingApplication to the Tax Court for more timeA Federal Court judge may allow a further period

Choosing the right forum before time runs out

Start by identifying what you are really disputing. If you say the interest was calculated wrongly or should not have been assessed, that points toward an objection and possibly the Tax Court. If the interest is correct but you want it forgiven because of your circumstances, that is a relief request, and a refusal goes down the administrative and Federal Court path.

If a deadline has already passed, there may still be options. A Tax Court appeal can be extended only if the application is made within one year after the 90-day period expires, and you must meet the statutory tests. Whether they apply to you depends on the facts, so get advice quickly.

Frequently asked questions

Can the Tax Court cancel interest and penalties after the CRA refuses relief?

Generally not. Relief under section 220(3.1) is a CRA administrative decision, not a Tax Court appeal. After a refusal you can ask for the CRA's second review, and if you think the CRA was not fair and reasonable, you can apply to the Federal Court for judicial review.

How long do I have to go to Federal Court?

An application for judicial review must be made within 30 days after the decision is first communicated, and a Federal Court judge may allow a further period. The CRA describes the limit as 30 calendar days from receiving the decision.

Can I appeal an interest-only dispute to the Tax Court?

Yes, where the only subject-matter is interest assessed under the Income Tax Act, the informal procedure applies. The Attorney General can apply to move it to the general procedure, and the Court must grant that if the interest in issue exceeds $25,000, not counting interest accruing after the notice of assessment.

Is there a time limit on asking the CRA for relief?

Yes. The Minister may waive or cancel penalties or interest on or before the day that is ten calendar years after the end of the taxation year. Because that limit is firm, it is sensible to apply well before it approaches.

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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