Need to make a change to your tax return or haven’t filed yet? Here’s what you can do

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.