CRA Form RC243 is the Tax-Free Savings Account return you file with the Canada Revenue Agency when your TFSA has generated a tax liability during the calendar year. You need it if you over-contributed, contributed while a non-resident of Canada, held a prohibited or non-qualified investment in the account, or received an “advantage” from it. The completed form and any tax owing are due by June 30 of the year after the liability arose. Most TFSA holders never have to file it; if you do, the form is how you calculate what you owe and pay it.
When You Have to File RC243
Four situations pull a TFSA holder into this return. Each carries its own tax and its own part of the form.
Excess Contributions
This is the most common trigger. If the total in your TFSA exceeds your available contribution room at any point during a month, you owe 1% of the highest excess balance for that month. The 1% applies again for every month the excess remains. A $5,000 over-contribution left in place for six months produces $300 in tax.
The trap most people fall into is timing. Withdrawals restore contribution room, but not until January 1 of the following year. Withdraw $10,000 in March, put it back in July without $10,000 of unused room already available, and you have over-contributed. The CRA will not warn you in advance. If you spot the mistake, pull the excess out immediately rather than waiting for a notice.
Contributions Made While Non-Resident
Any amount you contribute during a period when you are not a Canadian resident attracts a separate 1% monthly tax for as long as it stays in the account. Unused room from earlier resident years does not shelter you. The only exclusions are qualifying transfers between TFSAs and exempt contributions made by a surviving spouse or common-law partner.
Two related points catch people off guard: you accrue no new TFSA room for a year spent entirely as a non-resident, and withdrawals made while non-resident do not restore room until you re-establish Canadian residency.
Prohibited or Non-Qualified Investments
Both categories draw a 50% tax on the fair market value of the investment, calculated at the time the TFSA acquired it or the time it became offside.
A prohibited investment is one closely tied to you personally. The typical case is shares in a corporation where you and related parties own 10% or more of any class of shares. The same 10% threshold applies to partnership interests and to beneficial interests in trusts. A non-qualified investment is anything outside the list of assets a TFSA trust is allowed to hold. Qualified investments include publicly traded securities, mutual funds, GICs, and bonds, among other standard products. If an investment is both non-qualified and prohibited, the CRA treats it as prohibited only, so there is no double tax.
The 50% tax can be refunded if you dispose of the investment, or it becomes qualified or non-prohibited, before the end of the calendar year following the year the tax arose. You request the refund in writing with your RC243, giving the investment details, the date it was acquired or became offside, and the date the problem was resolved. No refund is available if the CRA concludes you knew or should have known the investment was offside.
Advantages
An advantage is a transaction designed to inflate the TFSA’s value or extract a benefit beyond ordinary investment returns. Examples include deliberate value shifts into the account, certain loans connected to the TFSA, and benefits provided by non-arm’s-length parties because the account exists. The tax is 100%: of the fair market value of a benefit, or of the outstanding amount of a loan or debt. Income and capital gains on prohibited or non-qualified investments can themselves be treated as advantages, which can stack a 100% tax on top of the 50% acquisition tax.
How to Complete the Form
Before you start, gather your Social Insurance Number, every TFSA account number, and year-end statements from each institution holding a TFSA in your name. You only fill in the parts of the form that apply to your situation.
Two schedules travel with the main form:
- Schedule A (RC243-SCH-A) calculates the 1% monthly tax on excess TFSA amounts. Work through each month, identify the highest excess balance, and apply 1% for every month the excess existed.
- Schedule B (RC243-SCH-B) calculates the 1% monthly tax on contributions made while you were a non-resident.
Investment issues and advantages are reported on the main form. Part C is for non-qualified investments, Part D for prohibited investments, and Part E for advantages. When an investment is both non-qualified and prohibited, complete Part D only.
For the investment parts you need the fair market value of each asset at the moment the TFSA acquired it or the moment it became prohibited or non-qualified. Get a transaction history and a valuation confirmation from your financial institution rather than estimating; an inaccurate figure can add interest to what you already owe.
Filing Deadline, Where to Send It, and Payment
File the completed RC243 and any schedules, and pay any tax owing, by June 30 of the year following the year the liability arose. An over-contribution during 2025 must be reported and paid by June 30, 2026.
Paper returns go to the CRA tax centre assigned to your province. The two main processing addresses are:
- Sudbury Tax Centre, Post Office Box 20000, Station A, Sudbury ON P3A 5C1
- Winnipeg Tax Centre, Post Office Box 14005, Station Main, Winnipeg MB R3C 0E3
You can pay through your bank’s online bill payment service by adding the CRA as a payee and using your nine-digit SIN as the account number. The CRA’s My Payment portal accepts debit transactions. Unpaid TFSA tax accrues compound daily interest at the CRA’s prescribed rate, which is 7% annually for the second quarter of 2026.
The RC243 guide references penalties and interest for late filing without setting a different rate, so the general CRA late-filing penalty applies: 5% of the unpaid balance at the deadline, plus 1% for each full month the return is outstanding, to a maximum of 12 months.
Asking the CRA to Cancel Penalties or Interest
If the liability came from circumstances beyond your control, you can ask the CRA to waive or reduce penalties and interest. The formal route is Form RC4288, Request for Taxpayer Relief. You can file it by mail or through the “Request relief of penalties and interest” option in My Account.
Explain in detail why you could not meet your obligations. The CRA weighs each request on its facts. Situations that tend to receive sympathetic treatment include serious illness, natural disasters, incorrect information from a financial institution, and CRA processing errors. Attach supporting documents: medical records, correspondence from your bank, anything that backs up your account.
Expect a wait. As of early 2026, the CRA reports processing times of roughly 14 months for taxpayer relief requests because volumes are higher than normal. If you are filing RC243 for the first time because of an honest mistake, submit the relief request with the return rather than waiting for an assessment. Include your SIN, the tax years involved, and the specific penalties you want waived.
If you never filed an RC243 for an earlier year when you should have, the CRA’s Voluntary Disclosures Program, updated effective October 1, 2025, can offer reduced penalties for taxpayers who come forward on their own to correct past omissions.
A Note for US Citizens and Green Card Holders
RC243 settles your Canadian TFSA tax. It does nothing for your US filings. The IRS does not recognize the TFSA’s tax-free status, and unlike RRSPs and RRIFs the account gets no US-Canada treaty exemption. Interest, dividends, and capital gains inside a TFSA are taxable on your US return in the year earned, and separate reporting obligations may apply to the account and its holdings. If you are a US person, treat the Canadian filing as one piece of a larger compliance picture and get US tax advice on the rest.