CRA Under Review / Review Letter (2026): What It Means, How Long It Takes & How to Respond

Getting a letter from the Canada Revenue Agency (CRA) saying your tax return is “under review” can be unsettling — especially after you’ve already planned your refund or owed amount. But in most cases, a review isn’t a full audit and doesn’t mean you’ve done something wrong. It’s simply a standard verification process the CRA uses to confirm your return is accurate and complete. :contentReference[oaicite:1]{index=1}

What Does “Under Review” Mean?

When the CRA flags your return as under review, they are checking details like income, credits, or deductions to make sure everything lines up. This could be part of a matching program or a processing review. A review letter typically requests supporting documents. :contentReference[oaicite:2]{index=2}

A review is **not the same as an audit**, and receiving a letter doesn’t automatically mean you’ll owe taxes or face penalties. It’s simply a follow-up to verify your information. :contentReference[oaicite:3]{index=3}

Why You Might Be Selected for Review

• Information your return shows doesn’t match third-party records — e.g., T4, T5 slips. :contentReference[oaicite:4]{index=4}
• Large or unusual deductions and credits you claimed. :contentReference[oaicite:5]{index=5}
• Your return is randomly selected as part of CRA’s compliance checks. :contentReference[oaicite:6]{index=6}

How Long Does a CRA Review Take?

The time it takes depends on what the CRA needs and how complex your situation is. You’ll usually have **about 30 days** to respond to the letter with the documents requested. :contentReference[oaicite:7]{index=7}

The review itself might be completed within weeks if the information is straightforward, or it can take **months** if the case is more complex. Some taxpayers report that reviews can extend from a few weeks to over a year depending on workload and documentation submitted. :contentReference[oaicite:8]{index=8}

What to Do When You Receive a Review Letter

1. Read the letter carefully
   Check the reference number and the exact documents the CRA is asking for. :contentReference[oaicite:9]{index=9}
2. Gather all supporting documents
   Include receipts, slips, and any proof of income or deductions claimed. :contentReference[oaicite:10]{index=10}
3. Submit electronically if possible
   Use “My Account” or “Represent a Client” to upload documents securely. :contentReference[oaicite:11]{index=11}
4. Respond within the deadline
   Missing the response window could lead the CRA to reassess your return unfavorably. :contentReference[oaicite:12]{index=12}

Common Mistakes to Avoid

• Waiting too long to respond — always file supporting documents early. :contentReference[oaicite:13]{index=13}
• Only sending partial documentation — provide clear, complete records. :contentReference[oaicite:14]{index=14}
• Assuming no answer means everything is fine — follow up if you don’t hear back. :contentReference[oaicite:15]{index=15}

What Happens After You Respond?

Once the CRA receives your documents, they will review them and either close the review, adjust your return, or request more information. If they adjust your return and you owe tax, pay promptly to avoid interest and penalties. :contentReference[oaicite:16]{index=16}

Frequently Asked Questions (FAQ)

Q: Is a CRA review letter the same as an audit?
A: No. A review is usually a verification of specific items, while an audit is more comprehensive and often for businesses. :contentReference[oaicite:17]{index=17}

Q: How long do I have to respond?
A: Most CRA review letters give taxpayers about 30 days to respond with requested information. :contentReference[oaicite:18]{index=18}

Q: What if I can’t find all the documents?
A: Provide what you can and include explanations; contact CRA early if you need more time. :contentReference[oaicite:19]{index=19}

References & Official Sources

• CRA — Your tax return is being reviewed
• CRA — Review of your tax return
• MoneySense — CRA review letter guidance