Forgot to Claim Your RRSP on Your Taxes in Canada? Here Is How to Fix It (2026)

You filed your taxes, your Notice of Assessment arrived — and then you realized you never claimed your RRSP contribution. Maybe you forgot to enter the receipt. Maybe you made a contribution in January and the slip arrived after you already submitted. Maybe you simply did not know you were supposed to report it.

Whatever happened: do not panic. You have not lost the deduction. The fix is straightforward, and the CRA has a clear process for exactly this situation.

Quick Answer: If you forgot to claim an RRSP contribution on a past tax return, file a T1 Adjustment (T1-ADJ) through CRA My Account to amend that return. The CRA will reassess and issue a Notice of Reassessment — which typically means a larger refund or lower taxes owing. You have up to 10 years to go back and claim a missed RRSP deduction.

First: Understand the Two Different Problems

There are actually two distinct situations people mean when they say they "forgot to claim their RRSP." They have different fixes, and it is important to know which one applies to you.

Most people are in Situation B without realizing it — especially if they used tax software that tracked unused contributions. Check your Notice of Assessment. Look for the line that says "Unused RRSP contributions previously reported and available to deduct." If your contribution is listed there, it is already on file with the CRA. You just have not claimed the deduction yet — and you can do that on any future return.

If the contribution does not appear anywhere on your NOA, you are in Situation A and need to file an amendment.

Situation A: You Never Reported the Contribution at All

Why This Matters

The CRA requires you to report all RRSP contributions on Schedule 7 of the tax return for the year they were made — even if you choose not to claim the deduction that year. This is not optional. Failing to report contributions means the CRA does not have an accurate record of your RRSP balance, which can create problems down the road — especially if you have contributions sitting unreported that push you over your limit without you knowing.

The Fix: File a T1 Adjustment

A T1 Adjustment is the official CRA process for amending a tax return that has already been filed and assessed. Here is how to do it:

Online Method — Fastest (Recommended)

1. Log into CRA My Account at canada.ca/my-cra-account
2. Select "Change my return" from the menu
3. Choose the tax year you want to amend
4. Search for "Schedule 7" in the adjustment tool
5. Enter the RRSP contribution amount in the correct period line
6. If you also want to claim the deduction now, update Line 20800 (RRSP deduction)
7. Submit — no receipts need to be uploaded unless the CRA requests them later

Online T1 Adjustments are typically processed within 2 weeks. If the amendment results in a refund, it will be issued to you after the reassessment is complete.

Mail Method — Slower

1. Complete Form T1-ADJ (T1 Adjustment Request) — available on the CRA website
2. Include your SIN, the tax year being amended, and the specific lines being changed
3. Attach a copy of your RRSP contribution receipt
4. Mail to your CRA tax centre

Mail adjustments take approximately 8 weeks to process.

Situation B: The Contribution Is Reported but the Deduction Was Not Claimed

This is actually a feature of the RRSP system — not a problem. The CRA allows you to contribute to your RRSP in one year and claim the deduction in a different, future year.

Unused contributions appear on your Notice of Assessment under the RRSP Deduction Limit Statement. They carry forward indefinitely. You can claim them on any future tax return — there is no deadline for claiming a deduction for contributions already reported.

When It Makes Sense to Delay Claiming the Deduction

Deliberately holding back an RRSP deduction is a legitimate tax strategy. The higher your marginal tax rate in the year you claim the deduction, the bigger the tax savings. It makes sense to delay when:

• You expect a significant income increase next year (promotion, bonus, new job)
• Your income this year is unusually low and you are in a low tax bracket
• You are approaching retirement and expect your income to spike in a final high-earning year
• You want to smooth your taxable income across multiple years

Example: You are in a 20.5% federal bracket this year but expect to move into the 26% bracket next year after a promotion. Waiting to claim a $10,000 RRSP deduction saves you $260 more in federal tax — just by timing when you claim it.

How to Claim the Unused Deduction This Year

When filing your current return, enter the unused contribution amount on Line 20800 (RRSP Deduction) of your T1 return. Your tax software will usually identify the available unused amount automatically if you have filed previous returns with the same software. You can also find the exact number on your most recent Notice of Assessment.

The First 60 Days Rule — A Common Source of Confusion

One of the most frequent reasons Canadians "forget" to claim an RRSP is the first-60-days rule. Here is how it works and where people get tripped up.

RRSP contributions made in January and February of the current year can be counted toward the previous tax year's return. These are called "first 60 days" contributions and they come with their own separate contribution receipt.

For the 2026 tax year, the first 60 days window ran from January 1 to March 2, 2026.

The Two Receipt Problem

If you contributed to your RRSP both during 2026 and in January–March 2026, your financial institution will send you two separate receipts:

• Receipt 1: Covers contributions from March 4, 2026 to December 31, 2026
• Receipt 2: Covers contributions from January 1 to March 2, 2026

Both of these must be reported on Schedule 7 of your 2026 tax return — even if you received the second receipt after you had already filed. If you filed before the second receipt arrived and forgot to include it, you need to file a T1 Adjustment to add it.

Important: Do not include first-60-days contributions from 2026 directly in your 2026 tax return as if they were new contributions. They belong on the 2026 return (or an amendment to it) — even if you are claiming the deduction in a future year.

How Far Back Can You Go?

The CRA allows you to amend a tax return and claim a missed RRSP deduction for up to 10 calendar years back.

That means in 2026, you can file amendments going back to the 2016 tax year. If you have been making RRSP contributions for years but never fully claimed the deductions, there may be significant refunds available to you that you have simply never collected.

What About RRSP Over-Contributions?

Forgetting to report a contribution is one problem. The opposite — contributing more than your limit — is a different and more serious one.

The CRA allows a lifetime over-contribution buffer of $2,000. Any over-contribution beyond this amount is taxed at 1% per month on the excess until it is withdrawn or absorbed by new contribution room.

If you think you may have over-contributed:

• Check your RRSP Deduction Limit Statement on your most recent Notice of Assessment
• Log into CRA My Account and review your RRSP room
• File Form T1-OVP to calculate and pay any excess contribution tax
• Contact your financial institution to withdraw the excess amount if needed

Over-contributions are penalized, but the CRA does offer relief in some circumstances — particularly when over-contributions happened due to reasonable error. A tax professional can help you navigate this.

2026 RRSP Numbers You Need to Know

Step-by-Step Summary: What to Do Right Now

1. Check your most recent Notice of Assessment. Look for "Unused RRSP contributions previously reported." If your missing contribution is listed there, it is already on file — skip to step 4.
2. If it is not on your NOA: Log into CRA My Account and use "Change my return" to add the contribution to Schedule 7 of the year it was made.
3. Decide whether to claim the deduction now or later. If your income this year is higher than previous years, claiming it now makes sense. If you expect higher income next year, carry it forward.
4. To claim unused contributions this year: Enter the amount on Line 20800 of your current return. Your tax software will guide you through this.
5. Keep your RRSP contribution receipts for at least 6 years from the end of the tax year you claim the deduction.

Frequently Asked Questions

I forgot to claim my RRSP contribution on my tax return. What do I do?

First, check your Notice of Assessment to see if the contribution was already reported on Schedule 7 as an unused amount. If it is listed there, no amendment is needed — you can claim the deduction on any future return. If it is not on your NOA at all, file a T1 Adjustment through CRA My Account or by mail using Form T1-ADJ to add it to the return for the year the contribution was made.

Did I lose my RRSP deduction by not claiming it?

No. Unused RRSP contributions carry forward indefinitely. Once a contribution is reported on Schedule 7, you can claim the deduction on any future tax return — there is no expiry date on the deduction. You only lose the deduction if the contribution was never reported at all and you miss the 10-year amendment window.

Can I claim an RRSP deduction from a previous year on this year's return?

Yes — this is one of the most useful features of the RRSP system. If you have unused contributions showing on your Notice of Assessment from previous years, you can claim all or part of them as a deduction on your current return. Enter the amount on Line 20800. This is especially powerful if your income this year is higher than when you made the contribution.

How far back can I go to fix a missed RRSP claim?

The CRA allows T1 Adjustments going back up to 10 years. In 2026, you can amend returns as far back as the 2016 tax year. If you made RRSP contributions in 2016 or later that were never claimed as deductions, you may still be entitled to refunds from those years.

What is the difference between reporting an RRSP contribution and claiming the deduction?

Reporting means telling the CRA you made the contribution — this goes on Schedule 7 and must be done in the year of the contribution. Claiming the deduction means using that contribution to reduce your taxable income — this goes on Line 20800 and can be done in any future year. You can report without claiming, but you cannot claim without having reported.

I made an RRSP contribution in January 2026 for my 2026 return. How do I claim it?

Contributions made from January 1 to March 2, 2026 belong on your 2026 tax return — specifically on Schedule 7 in the "first 60 days" section. Your financial institution will send a separate receipt for this period. If you already filed your 2026 return without including this contribution, file a T1 Adjustment to add it.

What if I contributed too much to my RRSP by mistake?

The CRA allows a lifetime over-contribution buffer of $2,000. Anything above that is penalized at 1% per month. File Form T1-OVP to report and pay the excess contribution tax. You can also contact your financial institution to withdraw the excess amount. In cases of reasonable error, the CRA may offer relief from the penalty — a tax professional can help with this.

I never received my RRSP contribution receipt. What do I do?

Contact your financial institution directly and request a copy of your contribution receipt. Most banks can reissue receipts quickly through online banking or by calling their investment line. Once you have the receipt, you can file a T1 Adjustment if you need to amend a past return, or simply include it in your current filing.

Should I claim my RRSP deduction now or carry it forward?

Claim it in the year when your marginal tax rate is highest — that is when the deduction saves you the most money. If your income is expected to be significantly higher next year (due to a raise, bonus, or contract work), carrying forward the deduction can increase your savings. If your income is already at its peak, claim it now. When in doubt, claim it now — the deduction is worth more in your hands today than delayed.

Does an RRSP T1 Adjustment trigger a CRA review?

Amendments are routine and do not automatically trigger a review or audit. The CRA processes millions of T1 Adjustments each year. However, if you are amending multiple years or claiming large amounts, keep your contribution receipts accessible in case the CRA requests them. Online adjustments typically do not require you to upload receipts upfront — the CRA will ask if they need them.

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Disclaimer: This article is for general educational purposes only and does not constitute professional tax or financial advice. RRSP rules and contribution limits change annually. For advice specific to your situation, consult a qualified Canadian tax professional or financial advisor.

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