You Overcontributed to Your TFSA. Here Are the 4 Steps to Fix It Before CRA Penalties Pile Up
The penalty clock starts ticking on the first day of the month you exceeded your limit, even if you only realized it three months later when your CRA My Account portal finally updated. That 1% monthly charge applies to the highest excess amount for each month, which means a $5,000 overcontribution left in the account for six months costs you $300 in penalties before you've even noticed the problem.
Here's the four-step sequence that actually stops the penalty accumulation and minimizes the damage.
1. Calculate the exact excess amount yourself, right now
Your CRA My Account shows "available TFSA room," but that number is often three to six months out of date because financial institutions report contributions in batches. If you contributed in June and you're checking in August, the portal might still be showing pre-June room. Pull your own records: add up every contribution you made this calendar year, subtract that from your actual available room (2026 annual limit of $7,000 plus any unused room from prior years), and identify the overage. If you withdrew money earlier this year, that amount does NOT get added back to your room until January 1, 2027. This is the single biggest trap. A $10,000 withdrawal in March does not give you $10,000 of space in August.
2. Withdraw the excess amount immediately
The 1% penalty applies for every month or part of a month the excess sits in the account. Withdrawing on August 15th means you pay for August. Withdrawing on September 2nd means you pay for both August and September. Call your financial institution and request a withdrawal for the exact dollar amount of the overcontribution. Do not wait for the CRA to send you a notice. The notice comes after the penalties have already started. If the overcontribution is sitting in multiple TFSA accounts at different banks, withdraw from whichever account has the most liquid holdings to avoid selling investments at a loss, but make sure the total withdrawn covers the full excess.
3. File Form RC243 or RC243-SCH-A if the CRA requests it
If the CRA identifies the overcontribution before you do, they will send you a letter requiring a formal TFSA return. This is not the same as your income tax return. It's a separate form used to calculate the penalty. The letter will specify whether you need RC243 (for individuals) or RC243-SCH-A (if you hold the TFSA as a trust, which is rare). The form asks for the excess amount and the number of months it remained in the account. Submit it by the deadline on the letter. Missing the deadline triggers a late-filing penalty on top of the 1% monthly charge: 5% of the balance owing plus 1% for each additional month, up to 12 months.
4. Request a penalty waiver immediately after you withdraw
The CRA's Taxpayer Relief provisions allow them to waive or cancel penalties if the overcontribution was a "reasonable error" and you corrected it as soon as you became aware. Write to the TFSA Processing Unit at your tax centre with a brief explanation of what happened (bank error, misunderstanding of withdrawal timing, contribution room miscalculation), the date you discovered it, and the date you withdrew the excess. Include proof of the withdrawal. The key phrase in the letter is "reasonable error." The CRA looks for two things: you acted quickly once you knew, and you haven't made the same mistake before. Approval is not automatic, but first-time errors with immediate correction have a high success rate. If they deny the waiver, you can request a second review or file a formal objection within 90 days.
The withdrawal stops the penalty meter. The waiver request clears what's already accumulated. Do both.
The penalty clock starts ticking on the first day of the month you exceeded your limit, even if you only realized it three months later when your CRA My Account portal finally updated. That 1% monthly charge applies to the highest excess amount for each month, which means a $5,000 overcontribution left in the account for six months costs you $300 in penalties before you've even noticed the problem.
Here's the four-step sequence that actually stops the penalty accumulation and minimizes the damage.
1. Calculate the exact excess amount yourself, right now
Your CRA My Account shows "available TFSA room," but that number is often three to six months out of date because financial institutions report contributions in batches. If you contributed in June and you're checking in August, the portal might still be showing pre-June room. Pull your own records: add up every contribution you made this calendar year, subtract that from your actual available room (2026 annual limit of $7,000 plus any unused room from prior years), and identify the overage. If you withdrew money earlier this year, that amount does NOT get added back to your room until January 1, 2027. This is the single biggest trap. A $10,000 withdrawal in March does not give you $10,000 of space in August.
2. Withdraw the excess amount immediately
The 1% penalty applies for every month or part of a month the excess sits in the account. Withdrawing on August 15th means you pay for August. Withdrawing on September 2nd means you pay for both August and September. Call your financial institution and request a withdrawal for the exact dollar amount of the overcontribution. Do not wait for the CRA to send you a notice. The notice comes after the penalties have already started. If the overcontribution is sitting in multiple TFSA accounts at different banks, withdraw from whichever account has the most liquid holdings to avoid selling investments at a loss, but make sure the total withdrawn covers the full excess.
3. File Form RC243 or RC243-SCH-A if the CRA requests it
If the CRA identifies the overcontribution before you do, they will send you a letter requiring a formal TFSA return. This is not the same as your income tax return. It's a separate form used to calculate the penalty. The letter will specify whether you need RC243 (for individuals) or RC243-SCH-A (if you hold the TFSA as a trust, which is rare). The form asks for the excess amount and the number of months it remained in the account. Submit it by the deadline on the letter. Missing the deadline triggers a late-filing penalty on top of the 1% monthly charge: 5% of the balance owing plus 1% for each additional month, up to 12 months.
4. Request a penalty waiver immediately after you withdraw
The CRA's Taxpayer Relief provisions allow them to waive or cancel penalties if the overcontribution was a "reasonable error" and you corrected it as soon as you became aware. Write to the TFSA Processing Unit at your tax centre with a brief explanation of what happened (bank error, misunderstanding of withdrawal timing, contribution room miscalculation), the date you discovered it, and the date you withdrew the excess. Include proof of the withdrawal. The key phrase in the letter is "reasonable error." The CRA looks for two things: you acted quickly once you knew, and you haven't made the same mistake before. Approval is not automatic, but first-time errors with immediate correction have a high success rate. If they deny the waiver, you can request a second review or file a formal objection within 90 days.
The withdrawal stops the penalty meter. The waiver request clears what's already accumulated. Do both.
Read Next
Asset managers cut product portfolios to fund AI and outsourcing overhauls
ETFs now hold 42% of Canadian fund assets as OSC tightens crypto and liquidity rules
One in Five Canadian Parents Still Pays Bills for Kids in Their Late Thirties
Joint mortgages surge in Ontario and B.C. as first-time buyers face rising delinquency pressure