If you receive a CRA assessment or reassessment (or GST/HST or payroll decision) that you believe is wrong or you don’t agree with, Canada has a fairly structured dispute process. The big risks are missing deadlines and submitting arguments without evidence.

This post explains the typical path: CRA review and objection -> Tax Court of Canada -> Federal Court of Appeal (and in limited cases, an application for leave to the Supreme Court of Canada).

The usual ladder (high level)

1. Try to resolve informally (audit/review officer) while the clock is running.
2. File a formal dispute: Notice of Objection (income tax / GST/HST) or appeal to the Minister (CPP/EI rulings).
3. If unresolved, file a Notice of Appeal with the Tax Court of Canada.
4. If needed, appeal the Tax Court judgment to the Federal Court of Appeal.

Note: In some cases, a further appeal to the Supreme Court of Canada is possible, but only with permission (leave).

What is an objection, dispute, and appeal?

Objection: The first formal step to challenge a CRA assessment/determination for income tax or GST/HST. It is handled by CRA Appeals.

Appeal: If CRA’s objection decision is still wrong (or CRA does not decide within the legislated time), you can appeal to the Tax Court of Canada.

Further appeal: A Tax Court judgment can be appealed to the Federal Court of Appeal. In limited cases, you may then seek leave to appeal to the Supreme Court of Canada.

Income tax objections: key deadlines and what to include

The objection deadline depends on who you are:

• Individuals (other than trusts) and graduated rate estates: Generally the later of 1 year after the filing deadline and 90 days from the date on the notice of assessment/determination (with some exceptions).
• Corporations: Generally 90 days from the date on the notice.

What to include (do not keep it vague):

• Which years/periods and which assessment/determination you are challenging.
• Each issue stated clearly (one issue per paragraph is best).
• The facts you rely on (what actually happened).
• Your position and why (law and CRA policy where relevant).
• The exact change you want (e.g., increase expenses by $X, reverse denial of ITCs, etc.).
• Supporting documents (contracts, invoices, calculations, correspondence, etc.).

GST/HST objections: timing differences

For GST/HST, the objection deadline is generally 90 days after the assessment was sent. If CRA does not decide within 180 days, you can usually proceed to the Tax Court of Canada without waiting for a decision.

CPP/EI rulings and payroll: “appeal to the Minister” first

CPP/EI rulings (employee vs contractor, insurable/pensionable status) generally follow a different first step: you appeal to the Minister of National Revenue, usually within 90 days of being notified. If still unresolved, you can then appeal to the Tax Court of Canada.

Tax Court of Canada: what happens next

If you disagree with CRA’s objection decision, you can appeal to the Tax Court of Canada. The Tax Court has two main procedures:

• Informal Procedure: simpler process for smaller amounts (and some specific matters).
• General Procedure: more formal process, typically for larger or more complex matters.

Common filing deadline to the Tax Court: you generally have 90 days from CRA’s confirmation/reassessment/determination to file your Notice of Appeal (rules vary by type of matter, so confirm for your case).

Federal Court of Appeal (last step in the usual tax ladder)

If you disagree with the Tax Court’s judgment, you can appeal to the Federal Court of Appeal. For income tax matters, CRA notes the filing deadline is generally 30 days from the Tax Court’s final judgment, with July and August excluded from that 30-day calculation.

In limited cases, you may then seek permission (leave) to appeal the Federal Court of Appeal decision to the Supreme Court of Canada.

Collections, interest, and cash-flow strategy during a dispute

Two practical realities:

• Interest often continues: Even if you object/appeal, interest may keep accruing on unpaid balances. Paying some or all can reduce the cost if you ultimately lose.
• Collections may pause on “amounts in dispute” (often), but not always: There are exceptions, and CRA can still collect in certain situations. Do not assume “filed objection = no collections.”

Deadlines cheat sheet (general guidance)

A practical checklist before you file

• Calendar the deadline immediately (and set reminders at 30/14/7 days).
• Gather documents and build a clean index (contracts, invoices, bank statements, emails, workpapers).
• Write your issues as a numbered list and attach a short calculation schedule for each.
• Decide whether partial payment makes sense to reduce interest exposure.
• Keep everything consistent: what you say in your letter should match the evidence you attach.

FAQ

Can I file an objection online?

Yes, through CRA “My Account” or “My Business Account” you can file your objection online.

If CRA delays, can I go to court?

In some cases, yes. For example, GST/HST rules often allow you to proceed if CRA has not decided within 180 days. Income tax has its own timing rules.

Will CRA stop collections if I object?

Not necessarily. Collections often pause on amounts in dispute, but there are exceptions and special situations.

Is taxpayer relief the same as an objection?

No. Taxpayer relief usually targets penalties and interest relief, not whether the tax is legally payable.

How Finsight CPA can help

If you have received a CRA reassessment, GST/HST assessment, payroll audit result, or CPP/EI ruling and you are not sure how to proceed, we can help you:

• triage the issue (objection vs adjustment vs relief),
• build an evidence package that matches the issues,
• draft a clean, persuasive objection submission, and
• coordinate with tax counsel if litigation is needed.

Book a quick call: finsightcpa.ca/contact/

References

• CRA – P148: Resolving your dispute (Income Tax Act objection and appeal rights)
• CRA – File an appeal to the Court (Income tax or GST/HST)
• CRA – GST/HST objections and appeals (Memorandum 31-0)
• CRA – Appealing GST/HST assessments to the Tax Court of Canada (RC4443-3)
• Tax Court of Canada – Get started
• Courts Administration Service – Federal Court of Appeal jurisdiction