Most Canadians file their taxes in April and don’t think about the CRA again until the following spring. But two deadlines falling this month — October 30 and October 31, 2026 — can quietly cost you money or a meaningful future benefit if they pass without action.
Neither date is the standard filing deadline. Neither one gets the media coverage of April 30. But for the right people, each one matters considerably more than their low profile suggests. Here is what you need to know before the end of October.
Deadline 1: October 30, 2026 — Your Last Chance to Claim the Canada Carbon Rebate
The Canada Carbon Rebate (CCR) — formerly called the Climate Action Incentive — stopped issuing new payments in April 2025, after the Carney government eliminated the consumer carbon levy. But the window to collect on past years has remained open for Canadians who had outstanding, unfiled returns.
Here is the key fact: you do not need to apply for the CCR separately. The rebate is automatically calculated when the CRA assesses your income tax return. If you were eligible but never filed your 2021, 2022, 2023, or 2024 return, filing now could still trigger a retroactive payment — potentially a substantial one.
Legislation currently before Parliament proposes to close that window permanently on October 30, 2026. Under the proposed amendment contained in Bill C-31, the CRA would not make any CCR payment based on a return or an adjustment request filed after that date, regardless of which prior year it covers.
A note on legislative status: As of the date of this post, Bill C-31 has passed second reading in the House of Commons and is before the Senate. It has not yet received Royal Assent. Strictly speaking, the October 30 deadline does not yet have the force of law. However, the CRA’s own website is already flagging it as a deadline for outstanding returns, and the bill is expected to pass. We would strongly advise not treating this as reason to wait.
Who should act before October 30?
You may still be owed retroactive CCR payments if:
- You lived in Ontario, Alberta, Saskatchewan, Manitoba, or another province where the federal fuel charge applied
- You were a resident of Canada on the first day of a payment month during any of the 2021–2024 tax years
- You have not yet filed your tax return for one or more of those years
- You have filed but did not report your correct province of residence, or have a pending adjustment request
To see whether you have unclaimed amounts on file, sign in to CRA My Account and check your benefit and credit summary. If you are uncertain, a CPA can review your filing history quickly.
Amounts vary significantly by year, province, and family size. In Ontario, for example, a single adult was eligible to receive the base CCR amount plus quarterly supplements across multiple years. For a family that has never filed, the retroactive total can exceed $1,000.
If you have outstanding returns going back to 2021, the time to act is now — not at the end of the month, but this week, to allow time for filing and CRA processing before the proposed cutoff.
Deadline 2: October 31, 2026 — Lock In Your Eligibility for the CRA’s New Pre-Filled Tax Return
The second deadline is not about past taxes — it is about making next year’s filing easier.
Starting in March 2027, the CRA will launch a new pre-filled tax return service. About one million Canadians will receive an invitation in their CRA account to review a return that the agency has already populated using the information it holds on file: your T4 slips, T5s, RRSP contribution receipts, pension income, and other third-party reported data. You review it, add anything missing, and submit.
By 2029, the CRA expects to extend the service to 5.5 million Canadians.
The catch is that eligibility for a 2027 invitation is tied to a cutoff that falls this week.
To be considered for an invitation, you must have all of the following in place by October 31, 2026:
- Your 2025 tax return filed by October 31, 2026 (the regular filing deadline was April 30, but late filers are still eligible if they file before the end of this month)
- An active CRA My Account
- Your correspondence preference set to “electronic mail” in your CRA account
- A lower income and relatively simple tax situation (employment income, OAS, CPP, basic investment income)
If you received an invitation, the pre-filled return you would review is for your 2026 tax year — filed in spring 2027. The October 31, 2026 deadline is about locking in eligibility for that future invitation based on your current filing history.
Who should pay attention to this deadline?
The pre-filled return is designed for Canadians with straightforward tax situations: retirees, individuals with employment income only, people on fixed income, and others who do not have complex deductions or business income. For those clients, the service could substantially reduce the time and friction involved in annual filing.
If you fall into that category and filed your 2025 return late — or have not yet filed it at all — filing before October 31 is worth doing. Even if you are not selected in the first cohort, filing promptly establishes the kind of history the CRA uses when expanding the program over the following years.
The three steps to complete before October 31:
- File your 2025 personal income tax return if you have not done so.
- Register for CRA My Account if you do not already have one.
- Sign in to CRA My Account and confirm your correspondence preference is set to “electronic mail.”
Before You Go: A Quick Summary of the Two Deadlines
| Deadline | Date | Who It Affects | What Happens If You Miss It |
|---|---|---|---|
| Canada Carbon Rebate — last call | October 30, 2026 | Canadians with unfiled 2021–2024 returns in eligible provinces | You permanently lose eligibility for retroactive CCR payments |
| CRA Pre-Filled Return — eligibility cutoff | October 31, 2026 | Canadians who haven’t filed their 2025 return or haven’t set up CRA My Account with electronic mail | You will not be included in the first cohort of invitations for the new pre-filled filing service (March 2027 launch) |
If you are a client of our firm and are unsure whether either of these deadlines applies to you, the simplest step is to call us this week. We can check your filing history through our CRA representative access within minutes and confirm whether you have outstanding returns or CCR amounts on file.
For new clients, we offer a no-obligation consultation and can often help you get a return filed within a matter of days when the situation is straightforward.
Tax law and CRA administrative rules are subject to change. The October 30 CCR deadline is proposed legislation under Bill C-31, which had not yet received Royal Assent at the time this post was published.
Disclaimer
The information discussed in this article is general in nature and should not be construed as any sort of advice. If you have any particular questions regarding your personal tax situation, please reach out to sandeep@multanitax.ca.
Photo by Dylan Gillis on Unsplash
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