I already fill the return for 2021 but now I have another T4A to add, is there a way ?

If you have already filed your return, you will need to wait for your notice of assessment. Once you receive it, you will be able to see if it was already entered by the CRA. If yes, then you won't need to do anything as they would have adjusted it for you. If the T4A was not added you can then do an adjustment by signing in to your CRA My Account and click where it says “Change my return”. After selecting the tax year and line that needs to be changed, you can input the correct information to submit your changes.

TIP: Once you submit an adjustment request online, you can’t submit another one until the first one has been finalized. You’re allowed to make multiple adjustments all on one request, so try to have all your information ready.

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