Nobody at the Court will quote you a finishing date. The statute fixes some stages and leaves others entirely open, and which of those two worlds you land in is decided the day you file. This walks through each stage, what governs it, and where the months actually disappear.
Key Takeaways
- Only the simplified track has statutory deadlines for hearing and judgment.
- The complex track has no time limit after the Crown replies, which is where delay lives.
- Most files settle before a hearing, so the schedule matters more than the trial date.
- Interest keeps compounding throughout, whatever the outcome.
- Missing the filing window by a day ends the case regardless of its merits.
When You Can File an Appeal at the Tax Court
Two doors open on the right to appeal to the Tax Court, and you may use either.
The first opens when the Canada Revenue Agency confirms your assessment or sends a notice of reassessment after reviewing your dispute. Under section 169(1)(a) of the Income Tax Act (ITA) you then have 90 days from the day that notice was sent. The second is quieter and widely missed: ITA 169(1)(b) lets you go to court once that same 90-day period has passed since you served your objection and the Agency has told you nothing. For the goods and services tax and HST, the equivalent waiting period under ETA 306 is 180 days rather than 90. Either way you file an appeal with the Tax Court by filing a notice of appeal at the registry, and the Department of Justice Canada replies on the Minister’s behalf.
That second door matters. If your file has been sitting with an appeals officer for eight months, you are not obliged to keep waiting. You can move it to a judge instead, which sometimes prompts a settlement that the review stage never produced. Our guide to filing a notice of objection on Form T400A covers the stage that has to come first, because no tax case reaches the Court without a valid objection behind it.
Miss the window and ITA 167 allows an extension application, but only within one year after the deadline expired. Past that combined period nothing revives the file. The Tax Court dismissed exactly such an application in Oliveira v. The King, 2023 TCC 33, without ever reaching whether the underlying assessment was correct.
Informal Procedure: The 180-Day and 90-Day Rules
The simplified track is where the legislature actually imposed deadlines. It is available where the total federal tax and penalties in issue for each taxation year are $25,000 or less, with interest excluded from that calculation, or where a disputed loss determination is $50,000 or less. Sales tax disputes carry their own separate ceiling, so check it before assuming the same figure applies.
Three timing rules follow from the Tax Court of Canada Act:
- The Crown’s reply is due within 60 days of the Registry sending it your notice of appeal (s. 18.16).
- The Court shall fix a hearing no later than 180 days after that reply deadline, or 365 days where an earlier date would be impracticable (s. 18.17).
- Judgment follows within 90 days of the hearing closing, other than in exceptional circumstances (s. 18.22).
Add those together and a simplified file that goes the distance has a statutory outside horizon of roughly eleven to eighteen months from filing. There is no filing fee, evidence rules are relaxed, and under s. 18.14 anyone may represent you, an accountant included. The trade is that you cap your recovery at the threshold and the judgment carries no precedential weight.
General Procedure: Where the Timeline Stretches
Above those limits the complex track applies, and the statutory clock disappears entirely after pleadings. What replaces it is a sequence of rules with their own short deadlines and one very long gap:
| Stage | Rule | Time allowed |
|---|---|---|
| Crown files its reply | 44 | 60 days after service of the notice of appeal |
| You file an answer, if any | 45 | 30 days after the reply |
| Pleadings close | 46 | On filing the answer or expiry of that period |
| List of documents exchanged | 81 | 30 days after pleadings close |
| Examinations for discovery | 92 to 100 | No fixed deadline |
| Undertakings answered, status hearing | 125 | At the Court’s direction |
| Hearing and judgment | None | No statutory limit |
Read that table again and the picture is clear. Everything up to document disclosure runs on a four-month rhythm. Everything after it runs on whatever pace the parties set, which is why the Court now asks for a proposed timetable and issues a scheduling order based on it. The Tax Court of Canada Rules govern each step, and corporations cannot self-represent on this track without leave of the Court under s. 17.1, and filing fees run from $250 to $550 depending on the amount in issue.
Steps in the Appeal Process at the Tax Court
The sequence is the same on both tracks, and knowing it removes most of the anxiety.
- File. Your notice of appeal must be filed with the Tax Court inside the window, setting out the reasons for the appeal and the relevant facts.
- The Registry opens a file. Once the notice of appeal is filed, the Registry of the Tax Court reviews it. Having verified your notice of appeal, the Registry opens a matter, assigning a court file number.
- The Crown answers. The Registry sends a copy to the Deputy Attorney General of Canada, who must respond to your notice of appeal within 60 days. That reply to the notice sets out the assumptions the Minister relied on.
- Discovery and scheduling. Either party may apply to the Court for litigation steps to be fixed, and the Court will issue an order once a timetable is proposed.
- Hearing. You appear in court, or your representative does, and the Court may adjourn where a party asks the Court in writing in advance. Any such request should be a letter detailing the appeal number and the date already fixed.
- Judgment. The Court will give reasons, and either side may appeal a decision of the Tax Court. You have 30 days to appeal the decision to the Federal Court of Appeal.
Two practical notes. Any communication with the Court runs through the Registry rather than to a judge directly. A letter to the Court must copy the other side and quote your appeal number, on paper and on anything you submit by email. If you need a court interpreter, say so well before the date your appeal will be heard, and keep any documents requested by the Tax Court ready in advance.
Jurisdiction is narrower than people expect. This Court decides whether an assessment is correct as a matter of tax law, not whether CRA behaved reasonably, so you may not appeal a discretionary decision such as a refused penalty waiver here. Most appeals to this Court relate to income tax, though you may also appeal to the TCC under the Canada Pension Plan and the Employment Insurance Act.
A Realistic Timeline for a Tax Court Appeal
The Court does not publish an average time to disposition, so treat any single number you read with suspicion. What follows reflects the pattern we see across files rather than a published statistic.
| Phase | Simplified track | Complex track |
|---|---|---|
| Filing to Crown reply | 2 to 3 months | 2 to 4 months |
| Reply to close of discovery | Not applicable | 8 to 18 months |
| Discovery to hearing date | 4 to 8 months | 9 to 24 months |
| Hearing to judgment | Up to 3 months | 3 to 12 months |
| Typical total | 9 to 18 months | 2 to 4 years |
Two caveats keep those ranges honest. By the time your appeal reaches a hearing, the issue may have moved: files raising a question common to many other assessments get held behind a lead case and can wait years without anything happening. And most appeals never reach a hearing at all, because the Court expects the parties to keep talking and settlement conferences run in parallel with the schedule.
What Slows an Appeal Down, and What You Control
Delay is rarely the Court’s doing. In our CRA representation practice the same four causes recur, and three of them sit on the taxpayer’s side of the table:
- Unanswered undertakings. Commitments made at discovery to produce documents are the single largest source of drift. Files stall for months waiting on records the appellant already has.
- Late document lists. A thin list invites a motion for full disclosure, which adds a hearing before the real one.
- Changing the theory. Amending pleadings after discovery restarts work for both sides.
- Lead-case holds. Outside your control entirely, and worth asking about early.
Here is the connection that is easy to miss. Because the simplified track is the only one with a statutory hearing deadline, choosing it is a decision about time as much as cost. Where the amount in issue sits just above $25,000 for a year, capping your claim at the threshold can convert an open-ended file into one the Court must schedule. That trade is worth pricing before you file, not after.
Does Collection Stop When You Come to the Tax Court?
For income tax, largely yes. ITA 225.1 keeps the Agency from collecting a disputed amount while your appeal is before the Court, which is the practical reason many appellants file rather than settle early.
Three exceptions matter. Payroll withholdings and other trust amounts remain collectible throughout. A large corporation, meaning one with taxable capital employed in Canada above $10 million, stays liable for half the disputed amount. And GST/HST carries no automatic hold at all, since the Excise Tax Act gives the Minister only a discretionary power to postpone.
Interest never pauses. A four-year dispute compounds daily on any balance you ultimately owe, so the interest and penalty arithmetic belongs in your decision from day one. Where gross negligence penalties are also assessed, the amounts at stake usually justify the longer track.
After Judgment: When to Appeal to the Court Above
Either side may appeal to the Federal Court of Appeal under s. 27 of the Federal Courts Act, generally within 30 days. That layer typically adds twelve to twenty-four months. Beyond it, leave to the Supreme Court of Canada must be sought within 60 days, and leave is rarely granted in income tax matters.
Most files stop well before that. The Court expects that parties will keep negotiating throughout, as its own guidance makes clear, and most settle the dispute without going to court, which ends the clock immediately. For the wider sequence from assessment to courtroom, see our CRA appeals process overview.
Frequently Asked Questions
How long do Tax Court of Canada appeals take?
Simplified files typically resolve in nine to eighteen months, helped by statutory deadlines requiring a hearing within 180 days of the reply deadline and judgment within a further 90-day limit. Complex files usually run two to four years because no equivalent deadlines apply after pleadings close.
What is the difference between the informal and general procedure?
The simplified track applies where the tax and penalties in dispute are $25,000 or less per year, charges no filing fee, relaxes the evidence rules, and lets an accountant or agent represent you. The complex track has no ceiling, requires formal pleadings and discovery, and generally requires counsel for corporations. Most appellants above the threshold retain a tax lawyer and use their accountant for the evidence.
Does filing an appeal stop CRA from collecting?
For income tax, ITA 225.1 restricts collection while the appeal is outstanding. Payroll and other trust amounts are excluded, large corporations remain liable for half the disputed amount, and GST/HST assessments have no automatic protection. Interest continues to accrue in every case.
Do I need a lawyer for a Tax Court appeal?
Not on the simplified track, where the Tax Court of Canada Act permits representation by anyone, including your accountant. On the complex track an individual may self-represent, but a corporation needs counsel unless the Court grants leave for an officer or director to appear.
What happens if I miss the 90-day deadline to appeal?
You may apply for an extension under ITA 167, but the application must be made within one year after that deadline expired. Once the combined period passes, no court can revive the file, and the strength of your position becomes irrelevant.
Do most tax appeals settle before a hearing?
Yes, the large majority resolve without a trial. The Court schedules settlement conferences alongside the litigation timetable and expects parties to keep negotiating, so preparing for discovery is usually preparing for a negotiation rather than a courtroom.
The Bottom Line
Duration is largely a function of which track you are on and how quickly you answer what you promised.
- Diarise the 90-day window, and remember you can move after a 90-day silence.
- Price the simplified track’s speed against the recovery you would be capping.
- Answer undertakings within weeks, because that is where files quietly die.
- Run the interest arithmetic before committing to a multi-year dispute.
Whether litigation beats settling depends on the amount at stake, the documentary record and how much interest will accumulate before a judgment lands, and those variables differ on every file. Our CRA representation team works alongside counsel on these disputes and handles the accounting evidence they run on. If a confirmation letter has already arrived, speak to us while the filing window is still open.
