SimpleTax Help

How do I change my return after it’s been submitted?

Once your tax return has been filed, you need to wait to receive your notice of assessment before you can make a change to your return. Most returns are assessed within seven days of filing.

If you use CRA My Account, you can check to see if your return has been assessed by clicking on the “Tax returns” tab and then "View returns". Otherwise, you’ll need to wait for your Notice of Assessment to arrive in the mail.

You cannot change your return using NETFILE by submitting it again through SimpleTax. The easiest and fastest way to change your return is through CRA My Account. If you don’t use CRA My Account, follow the instructions at the end of this guide.

In SimpleTax

  1. Make the necessary changes to your return in SimpleTax.

  2. In the Submit section, click on the Show differences button.

In CRA My Account

  1. Log in to CRA My Account, in the Quick Links menu on the left side of the screen click Change my return and select the year. You should arrive at a page that looks like this:

    Use the search box to find the line numbers that have changed on your return.

  2. Enter any amounts that have changed (several fields won’t accept decimal places, only enter decimals if the field you are changing shows decimals in CRA My Account).

    Note: We’re always trying to improve our Show differences button. If we show you a row number that you can’t find in CRA My Account, or if something confuses you while changing your return, please send us an email and we’ll try to fix it!

  3. Make all changes you need before clicking Review and Submit Changes, the CRA will save your changes as you go (even though there is no Save button).

  4. When you’re ready to confirm and submit the changes, the CRA may display errors or warnings. Errors stop you from making a change until you provide additional information; warnings give you the opportunity to add additional information (if you’ve made all the changes from the Show Differences table, the warnings probably won’t apply).

  5. After you submit your changes, you may have an amount owing. If so, you’ll need to make a payment to the CRA.

  6. You can confirm your changes and payment by checking CRA My Account.

Once your tax return has been filed, you need to wait to receive your notice of assessment before you can make a change to your return. Most returns are assessed within seven days of filing. If you use CRA My Account, you can check to see if your return has been assessed by clicking on the Tax returns tab and then View returns. Otherwise, you’ll need to wait for your Notice of Assessment to arrive in the mail.

You cannot change your return using NETFILE by submitting it again through SimpleTax. The easiest and fastest way to change your return is through CRA My Account. If you don’t use My Account, follow the instructions at the end of this guide.

  1. Log in to SimpleTax and—if you haven’t already—save a PDF copy of your tax return as filed using Save PDF.

  2. Make the necessary changes to your return in SimpleTax.

  3. Save a new PDF copy of your return.

  4. Log in to My Account, click on the Tax returns tab and then View returns and Notices of Assessment and Reassessment. You’ll see a list of your tax returns and their assessments. The most recent year is at the top of the list.

  5. Then click on the most recent assessment or reassessment for the year you want to change.

  6. You should now see at a page that looks like this:

    The first few sections (Total income, Net income, Taxable income, and Refund or Balance Owing) are on your T1 General. As you scroll down the page, you’ll see the other schedules and forms from your return. Note that not every form will be shown (e.g., form T2125 doesn’t appear, so if you need to make a change to your business income, you only need to adjust the corresponding lines on the T1 General, Gross Income and Net Income).

  7. Compare the amount on each line in My Account to the amount on your new PDF. Note, if you’ve been reassessed (as in the screenshot) you’ll see two columns. Always look at the amount in the right-most column.

  8. Once you’ve determined which line numbers have changed, click Change my return in the left sidebar. Select the relevant year, and you should now see a page that looks like this.

    The tab that opens has a search box which you can use to search for the line numbers that have changed. You might find it easier to just click on the tabs (below the search box) that correspond to the relevant section of your return.

  9. Enter any amounts that changed. In the example below, I’m changing Interest and other investment income (line 121) from $500 to $750. You won’t be able change any calculated lines (e.g., total income on line 150); the CRA does this for you.

  10. Make all changes you need before clicking Review and Submit Changes, the CRA will save your changes as you go (even though there is no Save button).

  11. When you’re ready to confirm and submit the changes, the CRA may display errors or warnings. Errors stop you from making a change until you provide additional information; warnings give you the opportunity to add additional information that may be applicable to you.

  12. After you submit your changes, you may have an amount owing. If so, you’ll need to make a payment to the CRA.

  13. You can confirm your changes and payment by checking My Account.

If you don’t use My Account, you can fill out a T1-ADJ form. The steps are outlined on the form and are quite straightforward. The same idea applies: you are simply advising the CRA of which line numbers have changed.