Over-contribution penalties on RRSPs and TFSAs

Over-contributing to a registered account is one of the most common Canadian personal finance mistakes, and one of the most expensive when it goes uncaught. The CRA's enforcement is unforgiving: a flat 1% per month penalty on the excess balance, billed every month until the over-contribution is corrected. This guide walks through how the penalty works for both RRSPs and TFSAs and the standard cleanup process.

RRSP over-contributions and the $2,000 buffer

RRSPs have a small built-in tolerance: contributions up to $2,000 above your deduction limit are not penalized, although they are also not deductible. This buffer is designed to forgive minor timing errors - contributing in January based on an early Notice of Assessment estimate that later turns out slightly off. Exceed the $2,000 cushion and the 1% per month penalty kicks in on the amount above the buffer.

TFSA over-contributions, no buffer

The TFSA has no de-minimis buffer. Every dollar above your annual contribution room is subject to the 1% per month penalty from the day it enters the account. The most common TFSA over-contribution scenario is recontributing a withdrawal in the same calendar year, TFSA withdrawals create new room only in the following calendar year, not the current one.

The penalty arithmetic

The 1% monthly penalty applies to the highest excess balance in each month. A $5,000 over-contribution that sits in your account for six months before you correct it costs you $300 in penalty tax, payable to the CRA via form RC243 (TFSA) or T1-OVP (RRSP) along with a separately filed late return. Penalty interest accrues if you do not pay promptly.

How to discover an over-contribution

The CRA typically catches over-contributions during the annual reconciliation of T4RSP / TFSA-issuer reports against your contribution room. You'll receive a letter, usually 12 to 18 months after the year of over-contribution, assessing the penalty plus interest. By then the penalty has been accruing for over a year, so the assessed amount is often substantial.

The cleanup playbook

1. Stop contributing immediately.
2. Withdraw the excess amount via your financial institution, note that for TFSAs, the withdrawal triggers new room only in the next calendar year, but it does stop the penalty clock.
3. File RC243 (TFSA) or T1-OVP (RRSP) for each year affected, computing the monthly highest-excess penalty.
4. Pay the penalty plus interest in full.
5. Request relief under the Taxpayer Relief Program (CRA form RC4288) if the over-contribution was due to reasonable error and you corrected promptly, the CRA can waive part or all of the penalty for first-time, modest-amount, prompt-correction cases.

How to avoid it in the first place

Two practical safeguards: (a) read your current contribution room from CRA My Account, not your brokerage statement (brokerages do not always see contributions made elsewhere or carry-forward adjustments); (b) leave a small cushion below the ceiling - $500 to $1,000, to absorb any timing surprises around year-end transfers.

Continue reading: RRSP contribution room formula · TFSA cumulative room

Registered-account reference

RRSP, TFSA and RESP rules each have separate contribution-room mechanics. Use your latest CRA deduction-limit statement as the authoritative figure for an RRSP decision; a Notice of Assessment, reassessment, Form T1028 and the CRA account can change that figure.

Pension adjustments and unused RRSP room

A pension adjustment is reported in box 52 of a T4 or box 034 of a T4A and generally reduces the following year's RRSP deduction limit. Unused RRSP room can carry forward, but the amount available to deduct is the figure the CRA records for you. Read the CRA pension-adjustment guidance.

Excess-contribution rules

The CRA says unused RRSP contributions that exceed the deduction limit by more than $2,000 generally face a 1% monthly tax. TFSA excess amounts are also generally taxed at 1% per month. Remove an excess promptly and use the CRA's instructions for the relevant return rather than relying on a generic cleanup rule. RRSP excess-contribution rules and TFSA excess-contribution rules explain the exceptions, calculation and filing steps.

2026 registered-account contribution ceilings