You got a CRA review letter: what to do and how to respond

If your return is chosen for a review, the CRA first tries to check your claim with the information it already has. If it needs more, it contacts you or your representative by phone or in writing.

• Check that the letter is real. Hang up on callers who demand payment right away.
• Read the deadline in the letter. Reply within that time.
• Include the reference number from the upper right corner of the letter.
• Send all the receipts and documents that apply to your situation. You can upload scanned documents in your CRA account if your return is under review.
• If you do not have a receipt, add a written explanation or call the number at the bottom of the letter.

The CRA page gives no set number of days. It says to reply within the time in your letter. Call the number at the bottom of the letter to ask for more time. The CRA lists 1-800-263-4747 for Pre-Matching and 1-866-772-2237 for T1 Matching.

If your claim was changed and you have new information, the CRA says it will accept it and look at the claim again for a possible change.

The page does not say what happens if you do not respond. Reply on time and keep copies of everything you send.