Making an adjustment to your tax return can be done in two ways: Online or by mail. If you want to make your adjustment online, you can use the CRA’s ReFile service, which is available in the tax software that was used to prepare your return. Alternatively, you can make an adjustment online with the Change My Return service available on the CRA website. To use this latter method, you will have to sign up for My Account with the CRA – which you should do if you haven’t yet.
You can expect a response from the CRA within two weeks if made electronically, and within eight weeks if by mail. The taxman may either accept your request, ask for more information or deny it.What if the CRA assesses your tax return differently than you expected? Maybe a deduction was disallowed, or some other change was made to your tax return that you disagree with. Your first line of defence should be to call the CRA and speak to the area responsible for issuing your assessment.
You can file your Notice of Objection online by going to My Account and clicking on “Register My Formal Dispute.” Alternatively, you can file your objection by mail, by sending a written submission using Form T400A and supplementing this with a letter attached, if necessary, which should detail the facts of your situation, your reasons for objecting, and your requested reassessment.