If you have two T4s but only file taxes for one of them, is it too late to file the other one?

If you already file your tax return, you can still amend it. But make sure you wait until you receive your Notice of Assessment (NOA) from the Canada Revenue Agency (CRA) before sending them a new return.

Once you’ve reviewed your NOA, there are 3 ways to make changes to your tax return.

1. Refile

Using ReFILE is one of the fastest, easiest, and most cost-effective ways to make changes to your previously filed tax return. Simply submit your adjustments using the same certified NETFILE software you used when you filed your tax return.

2. CRA my Account

Sign 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.

3. Mail

To make changes to your tax return by mail, you’ll have to complete a T1 Adjustment Request and send it with all supporting documents for the change to your local tax centre. 

For more information, please see TurboTax webpage: How to Change Your Tax Return After You've Filed

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