Submitting your change request online isn’t just faster, it’s also easy and secure. Some 2024 tax slips, such as the T3 (trust income), T4 (remuneration paid), T4A (pension and other income) and T5 (investment income), were not available in My Account or through the Auto-fill my Return service as early as in previous years. So, if you forgot to include something on your tax return or spotted a mistake after filing, don’t worry. Here’s how and why you should submit your change request online.

If you need to change your income tax and benefit return, you can do so at any time. We suggest you wait until you receive your notice of assessment (NOA) before making a change to your return. There may be delays in some taxpayers receiving a paper NOA. This will not affect you receiving your refund. In the absence of a paper NOA, you can access a copy in My Account.