TFSA Tax Return Guide: When You Need to File Form RC243

Quick Answer

Why This Deadline Catches Canadians Off Guard

Most Canadians think of their Tax-Free Savings Account (TFSA) as truly tax-free. For millions of savers, it is. But the Income Tax Act carves out four situations where TFSA activity does trigger tax, and the return that reports it has its own deadline of June 30.

That deadline sits two months after the regular T1 personal filing date. Banks do not send a T4 or T5 slip for TFSA tax. The CRA usually finds the issue first, sends a proposal letter over the summer, and then the taxpayer scrambles to file Form RC243 and pay.

If you have received a letter about an excess contribution, held a foreign stock inside your TFSA, or contributed while living outside Canada, the June 30 deadline applies to you. The rest of this article walks through who must file, how to file, what happens if you miss the date, and how to ask the CRA to waive the tax.

Quick Start: Pick Your Path

Match your situation to one of the paths below to confirm whether the June 30 deadline applies to you.

• →You are an individual TFSA holder who over-contributed. You file Form RC243 and Schedule A. A 1% monthly tax applies to the highest excess amount each month it stayed in the account.
• →You contributed while a non-resident of Canada. You file Form RC243 and Schedule B. The same 1% monthly tax applies to those contributions.
• →You held a non-qualified or prohibited investment inside your TFSA. You file Form RC243. A 50% tax on the fair market value of the investment when it entered the TFSA applies.
• →You received a TFSA advantage, such as a swap transaction or a manipulated return. You file Form RC243. The advantage tax equals 100% of the fair market value of the advantage.
• →None of the above applies. You do not file a TFSA return. Your regular T1 personal return already reflects the tax-free growth in the account.

For anyone unsure, the fastest confirmation is to log in to CRA My Account and review the TFSA contribution room summary. The login mechanics mirror those in our practical guide to CRA My Business Account.

The Four TFSA Taxes: What Each One Covers

The excess contribution tax under section 207.02 charges 1% per month on the highest excess amount in your TFSA during that month. If you over-contributed by $3,000 and left it in the account for six months, the tax is $180. Withdrawing the excess stops the meter.

The non-resident contribution tax under section 207.03 applies if you contribute while living outside Canada for tax purposes. The rate is also 1% per month, and it continues until you either withdraw the contribution or become a Canadian resident again.

The non-qualified and prohibited investment tax under section 207.04 applies if you hold something inside your TFSA that the Income Tax Act does not permit. Common triggers include shares in a private company where you or a related person owns 10% or more, and certain foreign securities not listed on a designated exchange. The rate is 50% of the fair market value when the investment entered the TFSA.

The advantage tax under section 207.05 targets aggressive planning: swap transactions, deliberate over-contribution to earn extra return, and similar arrangements. The rate is 100% of the value of the advantage.

For broader TFSA planning, see our overview of TFSA strategies to maximize returns.

How to File Form RC243: Step-by-Step Roadmap

1. 1
   Confirm which tax appliesMatch your situation to one of the four categories above. If you received a CRA proposal letter, it identifies which tax and which amount they think you owe.
2. 2
   Gather your TFSA statementsYou need month-end balances and every contribution and withdrawal for the calendar year. Your bank or brokerage will provide these on request.
3. 3
   Complete Form RC243Download RC243 from canada.ca. The form asks for your name, SIN, tax year, and the tax type. Enter the calculation for the tax you owe.
4. 4
   Add Schedule A or Schedule B if requiredSchedule A supports the excess contribution calculation month by month. Schedule B supports non-resident contribution figures. Complete both if both apply.
5. 5
   Submit the return by June 30Mail RC243 to the CRA tax centre listed on the form. As of 2026, RC243 is not accepted through CRA My Account or NETFILE; mail or authorized representative filing remains the standard route.
6. 6
   Pay the tax by June 30Pay online through CRA My Payment, at your bank, or by cheque. Reference your SIN and the tax year on the payment so the CRA applies it to the correct account.

Missing either the filing or the payment by June 30 starts daily compound interest at the CRA prescribed rate. Getting both done on the same day is the cleanest approach.

What Happens If You Miss the June 30 Deadline

Interest starts accruing on the day after June 30 at the CRA prescribed rate for overdue amounts. That rate is set quarterly and compounds daily. A $2,000 balance left unpaid for a full year can grow by several hundred dollars in interest alone.

Late filing without paying the tax attracts a separate late-filing penalty of 5% of the balance plus 1% per full month, up to 12 months. If the CRA has previously assessed you a late-filing penalty in one of the three prior years, the second-time penalty escalates further.

Unresolved TFSA tax can eventually trigger CRA collection action. The CRA may set off amounts against future GST/HST credits, tax refunds, and Canada Child Benefit payments. Withdrawing the excess does not remove the tax already owing; it only stops future 1% monthly tax from accruing.

The single most important step after missing June 30 is to file RC243 immediately, even if you cannot pay in full. Filing stops the late-filing penalty from growing further while you arrange a payment plan. See our related guide on a missed tax deadline in Canada.

Requesting a CRA Waiver Under Section 207.06

Section 207.06 of the Income Tax Act gives the Minister of National Revenue discretion to cancel or waive TFSA tax when two conditions are met. First, the tax arose from a reasonable error. Second, the taxpayer removed the excess, non-qualified investment, or advantage from the account without unreasonable delay.

The waiver request is a written letter to the CRA. Standard practice is to include your name, SIN, the tax year, the tax amount at issue, a plain-English explanation of the error, and proof that the excess or investment has been removed. Attach bank statements and correspondence with your financial institution.

The CRA generally accepts these grounds: incorrect contribution room information from your bank, misunderstanding of a rule change in the first year it applied, or a documented bookkeeping error. It generally does not accept forgetfulness, ignorance of the rules, or a deliberate strategy that turned out badly.

Processing typically takes several months, and interest continues to accrue while the CRA reviews the request. If the CRA denies the waiver, you can escalate through a Notice of Objection and, if needed, the Tax Court of Canada. Our tax audit survival guide covers the objection process in depth.

Common Mistakes to Avoid

Six mistakes ClearWealth sees repeatedly on TFSA returns:

• →Assuming the TFSA return is included in your T1 personal return. RC243 is a separate filing and separate payment; filing T1 does not satisfy your RC243 obligation.
• →Trusting the contribution room shown on your online banking dashboard. Banks update their figure after CRA finalises last year’s data, which can leave the dashboard six to nine months behind reality.
• →Withdrawing the excess and assuming the tax disappears. Withdrawal stops future 1% tax from accruing but does not erase what has already been assessed for prior months.
• →Waiting for a CRA letter before filing. Interest and late-filing penalties both start on July 1 whether or not you have heard from the CRA yet.
• →Sending a waiver letter without documentation. A reasonable-error argument fails without bank statements, correspondence with the financial institution, and clear proof that the excess or investment was removed.
• →Rolling contribution room from a TFSA into an RRSP mentally. The two accounts have separate limits and separate rules; conflating them causes over-contribution errors in both accounts.

Frequently Asked Questions

For the annual dollar limit, see our note on 2026 TFSA contribution limit implications.

Sources & References

1. 1.Canada Revenue Agency, “Tax payable on TFSAs” — https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/tax-free-savings-account/tax-payable-tfsa.html
2. 2.Canada Revenue Agency, “Form RC243, Tax-Free Savings Account (TFSA) Return” — https://www.canada.ca/en/revenue-agency/services/forms-publications/forms/rc243.html
3. 3.Income Tax Act, R.S.C., 1985, c. 1 (5th Supp.), sections 207.01 through 207.07 — https://laws-lois.justice.gc.ca/eng/acts/i-3.3/
4. 4.Canada Revenue Agency, “Prescribed interest rates” — https://www.canada.ca/en/revenue-agency/services/tax/prescribed-interest-rates.html
5. 5.Canada Revenue Agency, “Cancel or waive penalties or interest” — https://www.canada.ca/en/revenue-agency/services/about-canada-revenue-agency-cra/complaints-disputes/cancel-waive-penalties-interest.html
6. 6.Canada Revenue Agency, “Tax-Free Savings Account (TFSA), Guide for Individuals” (RC4466) — https://www.canada.ca/en/revenue-agency/services/forms-publications/publications/rc4466.html