Free Tax Clinic: YEar-Round Clinic

Request changes online 

You can change your return online by using the improved and simplified Change my return option found in My Account, or by using  ReFILE . These services are the fastest, easiest and most secure way to change a return. If you cannot request changes online because your return is still being processed, you must wait until it has been assessed.  

Send a paper adjustment request form 

If you prefer, you can complete Form T1-ADJ, T1 Adjustment Request. Once completed, you can mail it to your tax centre. Please make sure to include all your supporting documents for the change(s) you want to make.  

How long will it take for the changes to be made? 

• If you submitted your request online, your change request will take about two weeks to be processed.
•  If you submitted your request by mail, your change request will take longer. Due to COVID-19, the CRA may take 10 to 12 weeks to process paper adjustments. 

We consider some adjustment requests to be complex and they may take longer to process. Complex requests include situations where additional information or review is required. 

For more information on processing times, go to CRA processing times. 

You can request an adjustment for any of the 10 previous calendar years online or by mail. For example, a request made in 2022 must relate to 2012 or a later tax year. Adjustment requests for different years should be on different forms. But, they can be mailed in together or submitted to us at the same time.

After the CRA has reviewed your request 

After we have reviewed your request to change your income tax return, you will receive: 

• a notice of reassessment, indicating the changes made to your return, or 
• a letter explaining why we did or did not make the changes you requested. 

Your entitlement to benefits and credits such as the Canada child benefit and the GST/HST credit may be revised at a later date. In this case, a notice of redetermination will be sent to you under separate cover.