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I Over-Contributed to My RRSP — How to Fix It (Canada)

Updated

This page covers what to do after contributing more than your RRSP room: how the buffer works, how the penalty is calculated, and how to fix it. Finding your room in the first place is covered by the RRSP contribution room calculator; the contribution deadline, which is a separate issue, is in is it too late to contribute to my RRSP?. Other contribution-room guides are in the RRSP guide directory.

RRSP over-contributions happen more often than people realize — a miscalculated room amount, a spousal RRSP mix-up, or a transfer that was processed as a new contribution. Here’s what to do.

Understanding the $2,000 Buffer

Unlike the TFSA, the RRSP has a $2,000 lifetime buffer, a built-in cushion that lets you over-contribute by up to $2,000 without paying a penalty (it applies if you were 18 or older in the previous year).

SituationResult
Over-contribution up to $2,000No penalty, but the excess cannot be deducted until you have room
Over-contribution over $2,0001% per month tax on the amount above $2,000

The $2,000 buffer is not a free zone — you still cannot deduct contributions for which you have no room. But you won’t face a monthly penalty on the first $2,000 of excess.

How the 1% Monthly Tax Works

The penalty applies to the highest excess amount in each month, on amounts exceeding the $2,000 buffer.

Example

Your RRSP deduction limit is $15,000. You accidentally contribute $19,000, a $4,000 excess.

  • Buffer covers the first $2,000 (no penalty)
  • Remaining excess above buffer: $2,000
  • Penalty: 1% × $2,000 = $20/month until the excess is withdrawn

After 6 months before you notice and fix it: $120 total penalty.

The rules in brief

  • Only the amount more than $2,000 over your deduction limit is taxed.
  • The $2,000 cushion requires that you were 18 or older at any time in the previous year.
  • The tax is 1% of the excess for each month it stays in.
  • You file Form T1-OVP within 90 days after the end of the year; filing late adds a penalty.

Step 1: Check Your Deduction Limit

Your RRSP deduction limit appears on:

This is the maximum amount you can deduct this year. It is not quite the same as the room you have left to contribute: if the notice also shows unused RRSP contributions (made earlier but not yet deducted), those count against the limit, so your remaining room is the deduction limit minus those unused contributions.

Step 2: Calculate Your Excess

Excess = Your unused (undeducted) contributions to all RRSPs, including the ones you made to a spousal RRSP − your deduction limit

If the result is more than $2,000, you have a penalizable excess.

Contributions include:

  • Direct contributions
  • Not included: amounts transferred directly to your RRSP from a registered pension plan or other registered plan, retiring allowances rolled over directly, and HBP or LLP repayments. These don’t affect your deduction limit, although your pension adjustment (PA) or past service pension adjustment (PSPA) does reduce your room
  • Group RRSP employer contributions
  • Spousal RRSP contributions you made (they use YOUR room, not your spouse’s)

Step 3: Withdraw the Excess

To stop the penalty from accumulating, withdraw the excess amount from your RRSP.

The withholding problem: Your financial institution is required to withhold income tax on any RRSP withdrawal — even one made to fix an over-contribution. Use CRA Form T3012A (Tax Deduction Waiver on the Refund of Your Unused RRSP, PRPP, or SPP Contributions from your RRSP, PRPP or SPP) so the institution can pay out the excess without withholding tax. CRA must approve the form before the withdrawal.

Alternatively, you can withdraw with withholding tax applied, then claim the withheld tax on line 43700 of your return and the offsetting deduction on line 23200 (calculated on Form T746). The net result is the same, but it ties up cash in the interim.

Step 4: File Form T1-OVP

You must file Form T1-OVP (Individual Tax Return for RRSP, PRPP and SPP Excess Contributions) within 90 days of the end of the calendar year in which the over-contribution occurred.

For example: if you over-contributed in 2025, T1-OVP is due by March 31, 2026.

Late filing adds a penalty: 5% of the balance owing plus 1% per month late, up to 12 months.

Step 5: Pay the Penalty

Calculate the total penalty on T1-OVP and pay CRA by the filing deadline. Payment can be made through:

  • Online banking (add the CRA as a payee) or a debit card through the CRA’s My Payment service
  • In person at a bank or credit union
  • At a Canada Post outlet, with a customized QR code from the CRA

Applying for Penalty Waiver

If the over-contribution was an honest mistake corrected promptly, apply for relief:

  1. Complete Form RC2503 (Request for Waiver or Cancellation of Part X.1 Tax) or write to the CRA
  2. Explain how the over-contribution occurred (e.g., you misread your NOA, your employer made a contribution you didn’t expect)
  3. Show that you withdrew the excess as soon as you discovered the error
  4. Request that the tax be waived or cancelled

CRA considers a waiver only when both conditions are met: the excess arose from a reasonable error, and you are taking, or have taken, reasonable steps to eliminate it.

Common Causes to Avoid

Pension adjustments (PA): If you belong to a registered pension plan (a defined benefit or defined contribution pension) or a DPSP, your next year’s RRSP room is reduced by your PA. If you contribute without accounting for this reduction, you may over-contribute.

Spousal RRSPs: Contributions to your spouse’s RRSP use YOUR contribution room. If you contribute to both your own RRSP and a spousal RRSP without checking your total room, you can exceed your limit.

Group RRSPs: Employer matching contributions and your payroll RRSP deductions both count against your room. Keep track of all contributions, not just the ones you initiate.

Sources

The figures and rules on this page come from these sources, last checked against them between September 17, 2026 and September 29, 2026. How we check facts.