Notice of assessment in Canada: what it is, what it shows and how to get a copy
Quick summary
A notice of assessment (NOA) is the CRA's summary of your return: a refund, an amount due, or nothing owing. If the CRA later changes your return, it sends a notice of reassessment. You have 90 days from the date of a notice to dispute it. To fix a mistake, see how tochange a return.
Checked November 3, 2026. Main source: CRA: Notices of assessment, NOA or NOR (modified July 9, 2025). See all 1 source.
What a notice of assessment is
The CRA sends a notice of assessment after it receives your income tax and benefit return. A notice of reassessment (NOR) is sent only if the CRA changes your assessed return.
What it shows
- The last 4 digits of your SIN, the tax year and the issue date.
- Your NETFILE access code, an 8-character code you can use to file electronically.
- Your account summary: a refund, an amount due, or a nil balance.
- Key line numbers and amounts, with an explanation of any changes.
- Statements for registered plans, if you have them: RRSP, Home Buyers' Plan, Lifelong Learning Plan and First Home Savings Account.
How to get a copy
- Online: sign in to your CRA account, choose your Individual account, then Tax returns or Mail.
- By phone: call 1-800-959-8281 to ask for a paper copy. You may need to prove your identity.
If you disagree
You have 90 days from the date of your notice to register a formal dispute. If information was missing or entered wrong, you can change your return instead.
If the notice shows a balance owing
Questions people ask
What is a notice of assessment?
A summary of the amounts the CRA calculated for your income tax and benefit return, showing a refund, an amount due or a nil balance.
How do I get my notice of assessment?
Sign in to your CRA account and go to Tax returns or Mail, or call 1-800-959-8281 to ask for a paper copy.
How long do I have to object to a notice of assessment?
The CRA says 90 days from the date of your notice.