A letter from the CRA looks serious, but most of them are routine. Work through it in this order.
What are the first steps?
- Check that it is real. Do not use phone numbers or links in a message you did not expect. Sign in to your own CRA account and see if the same letter is there. See how to spot a CRA scam.
- Find the type. The heading tells you if it is an assessment, a reassessment, a request for documents or a balance owing. Our CRA letters decoder explains each.
- Find the deadline. Letters that ask for documents usually give a date, and missing it can cost you.
- Gather what they ask for. Send it through your CRA account if you can, and keep copies.
What if you disagree?
For most individuals you have 90 days from the date on the notice to object, or one year after the filing due date, whichever is later. Check your letter, because rules differ for some cases.
Who can help?
For a complicated case, a licensed professional can help, and our guide to choosing a tax preparer covers what to check. The guide to dealing with the CRA covers the rest.
Where does this information come from?
The steps follow Canada Revenue Agency guidance. We do not represent the CRA and cannot answer questions about your file. Checked in October 2026. This is an independent information site: we provide no services, we do not represent the CRA or any organization, and we do not guarantee that anything here is accurate or current. We accept no liability for decisions based on it. Check the official source before you rely on it. See the full disclaimer.