external-link
Skip to content
  • Français
    • Getting startedLearn about the stock market, investment types, and how to get started.
    • Understanding riskLearn about the risk-return relationship, risk tolerance, and why it matters.
    • Psychology of InvestingMake better financial decisions by learning about behavioural insights.
    • Working with an advisorA financial advisor can help you choose investments and manage your portfolio.
    • Tracking your progressLearn how to track your investing progress and see how you're doing.
    • Rules and regulationsRegulators protect investors in Canada by setting and enforcing securities rules.
    • Community outreachOSC in the Community takes the OSC's mandate from Bay Street to Main Street.
    • AnnuitiesAnnuities are an investment that can generate a steady income in retirement.
    • BondsBonds are an investment that generate interest after a fixed period of time.
    • Crypto assetsCrypto assets are digital investments with different opportunities and risks.
    • ESG investingESG investing allows you to choose investments that align with your priorities.
    • ETFs (exchange-traded funds)These funds hold a collection of investments and are traded on a stock exchange.
    • GICs (Guaranteed investment certificates)GICs guarantee a specific rate of return over a short period of time.
    • Mutual funds & segregated fundsMutual funds pool multiple investments into a fund owned by many investors.
    • Pension & savings plansDifferent kinds of workplace pension plans provide retirement income.
    • Real estateBuying a home is a way to invest your money and diversify your portfolio.
    • StocksStocks give you equity in a company, and are traded on a stock exchange.
    • More complex investmentsComplex investments have potential for high reward, but also higher risk.
    • RDSPPeople with disabilities can save with a Registered Disability Savings Plan.
    • RESPSave for your child's education with a Registered Education Savings Plan.
    • RRIFYou open a Registered Retirement Income Fund with funds from your RRSP.
    • RRSPA Registered Retirement Savings Plan grows your savings tax free until you retire.
    • TFSAA Tax-Free Savings Account helps you save for any goal, tax free.
    • Bank accountsChequing and savings accounts can help you manage your short-term needs.
    • BudgetingA budget can help you manage your spending, saving, and plan for the unexpected.
    • Life EventsLearn about how your financial needs may change at different stages of life.
    • Making a planHaving a plan can make it easier to make the right investing decisions for you.
    • Managing debtDebt shouldn't get in the way of your saving and investing. Learn how to manage it.
    • Personal insurancePersonal insurance coverage can help protect you and your loved ones.
    • RetirementPlanning for retirement helps you determine how much to save and where.
    • Running a small businessImprove your financial knowledge for your business and your personal life.
    • Saving moneyKeep your financial goals on track by saving some money each month.
    • Understanding taxLearn more about how tax filing and tax deductions work.
    • Wills and estate planningPreparing a will and estate plan ensure your final wishes are taken care of.
    • Types of fraudLearn how to spot frauds and scams and what they look like.
    • Making a complaintKnow your options for making a complaint.
    • Reporting fraudIf you suspect you've been a victim of fraud, report it immediately.
    • Checking registrationAlways check the registration of anyone trying to give advice or sell investments.
    • Investor warnings and alerts
    • CalculatorsPractice calculating compound interest, savings, debt consolidation, and more.
    • Quizzes and toolsCheck your knowledge of scams, behavioural biases, and other financial tools.
    • WorksheetsTry our downloadable tools to help you plan and budget.
    • VideosOur videos show you the basics of investment types, frauds to watch for, and more.
    • Investing chartsSee the impact of market ups, downs, and more based on historic data.
    • Research & reportsDive into groundbreaking research to better understand retail investor behaviours, attitudes and experiences.
    • Investing introductionIf you’re new to Canada or investing visit our multilingual site for more information in 23 languages.
    • Investor NewsStay informed about the latest investor initiatives, educational resources, and warnings/alerts.
    • Investing questionsFind unbiased answers to your investing questions from a trusted source.
    • Get Smarter About CryptoLearn more about crypto assets including how they work, rules and regulations, and crypto fraud. If you are considering investing in crypto assets, always work with a registered crypto asset trading platform.
    • Investing fundamentalsExplore the eight fundamentals that can help you make smarter investing decisions.
    • Investment reportingWalk through the steps to see how your investments are doing.
  • Investing Academy

GetSmarterAboutMoney.ca

Français
When autocomplete results are available use up and down arrows to review and enter to go to the desired page. Touch device users, explore by touch or with swipe gestures.

Home / Managing your money / Understanding tax / How your tax notice of assessment can help you

Tax

How your tax notice of assessment can help you

5 min read

Share

  • Share to Twitter
  • Share to Facebook
  • Share to LinkedIn
  • Share to Reddit
  • Share via Email

Your taxTax A fee the government charges on income, property, and sales. The money goes to finance…+ read full definition notice of assessment tells you many important things. Learn more about what’s in your notice of assessment and what to do if you need to make a change on your tax return or if you disagree with your assessment.

On this page you’ll find

  • What is a notice of assessment?
  • How can you make changes to your tax return?
  • What if you disagree with your notice of assessment?
  • Summary

What is a notice of assessment?

After you file your taxes, the Canada Revenue Agency (CRA) processes your tax return and then sends you a notice of assessment (NOA).  Your notice of assessment has a summary of important information about your tax return as well as other important accountAccount An agreement you make with a financial institution to handle your money. You can set…+ read full definition details, including your:

  • Account summary – The result of your assessed or reassessed tax return, which will be either a refund, zero balance, or balance owing. This includes any outstanding balances you may still owe from previous years.
  • Tax assessment summary – The main lines on your assessed tax return, and the amounts used to calculate your balance.
  • Explanation of changes – This section explains any changes or corrections that were made to your tax return after it was processed by the CRA. These changes are based on the information sent with your return and what the CRA has on file.
  • RRSPRRSP See Registered Retirement Savings Plan.+ read full definition deduction limitDeduction limit The most you can deduct for your RRSP contribution on your income tax return. Any…+ read full definition – This statement shows your deduction limit remaining for your Registered Retirement Savings Plan (RRSP), and how this limit was calculated. This limit is the amount of RRSP contributions you can deduct for the next year. This section will also show your available RRSP contribution roomContribution room The amount you can put into a savings plan like a Registered Retirement Savings Plan…+ read full definition, and any excess contributions if you have contributed more than your deduction limit.
  • TFSATFSA See Tax-Free Savings Account.+ read full definition contributionContribution Money that you put into a savings or investment plan.+ read full definition room – Your notice of assessment will show your available contribution room to your Tax-free Savings Account (TFSA). This can help you with planning your financial contributions for the next tax year.

Your notice of assessment may also contain information about:

  • Home Buyers’ Plan statement – The Home Buyers’ Plan (HBP) allows you to withdraw up to $35,000 from your RRSP towards buying or building a qualifying home.  This amount must be repaid to your RRSP within 15 years. Your notice of assessment provides a statement of your remaining balance and minimum amount to repay for the next year.
  • Lifelong Learning Plan statement – The Lifelong Learning Plan (LLP) allows you to withdraw up to $10,000 in a calendar year from your RRSP to finance full time training or education for you or your spouse or common-law partner. This amount must be repaid to your RRSP within 10 years. Your notice of assessment shows the balance left to repay and the minimum amount to repay for the next year.

You can find your notice of assessment or reassessment online in your CRA MyAccount, or by mail. When you receive your assessment, it’s important to compare it with your copy of your tax return, to see where any changes were made, if any.

Keep your notice of assessment with your tax documents for that year. If you need to consult key information about your tax return for that year, it’s likely that the assessment will be useful.

Your notice of assessment contains information about how much RRSP contribution room and TFSA contribution room you have available for the coming year. This can help you plan your contribution and investing strategy to either or both accounts. If you work with a financial advisor, they may ask you about your contribution room for these accounts. Bring your NOA with you or consult it before meeting with your advisor.

How can you make changes to your tax return?

After you have filed your tax return, you might realize you need to make changes. If this happens to you, remember to wait until you receive your notice of assessment before requesting any changes. Do not file another tax return for that same year. You can make changes to a previously filed tax return in a few ways:

  • Use the Change my Return feature on CRA MyAccount. In order to use this feature, your tax return must have been already assessed — in other words, you have already received a notice of assessment.
  • Use ReFILE if you’ve filed your return online with certified NETFILE or EFILE software, for tax years starting in 2019 or later.
  • Submit a request by mail by sending a completed T1 Adjustment Request form to your local tax centre, along with all documents supporting the change request, including the original assessment. Change requests sent by mail may take longer than those sent online.  

When your review is completed, the CRA will send you a:

  • Notice of reassessment showing any changes to your return, or
  • Letter explaining why it did not accept the changes you requested.

If you haven’t signed up for CRA MyAccount, it’s free to do so. You can use MyAccount to access information about your tax return, notice of assessment, tax benefits and credits, and more. You can also change your address or direct depositDirect deposit A way to have money from your pay, investments or the government put into your…+ read full definition information, and choose to have your correspondence sent to you via email.

The CRA may contact you by phone or by letter if they are reviewing your return. If you receive any text messages or phone calls saying they are from the CRA, this could be suspicious. Learn more about steps you can take to verify if it’s really the CRA at the other end of the line.

What if you disagree with your notice of assessment?

If you receive your notice of assessment, and you disagree with changes made to your return or account, you can contact the CRA to file an objection. Objections lead to a review of the assessment or determination. To file an objection:

  1. Contact the CRA – You’ll find the Canada Revenue Agency (CRA) phone number on your notice of assessment. You’ll need to address the miscommunication or mistake and provide any further information needed to clear things up. You can also use this online decision tree questionnaire provided by the CRA, to help you determine whether you should file an objection. Have your notice of assessment and any other CRA correspondence on hand.
  2. File an objection – If you’re not satisfied after speaking with the CRA, you can file an objection (T400A). This is a formal dispute. You have to give the reasons for the dispute and present the relevant facts and documents.
  3. Appeal to the Tax Court of Canada – If you disagree with the CRA’s ruling on your objection, you can appeal to the Tax Court of Canada.

Consider hiring a tax professional to help you with filing a notice of objection or appealing to the Tax Court of Canada.

Summary

You will be sent a notice of assessment after your tax return has been processed. It’s an important document that should be kept alongside all other tax documents for each tax filing year.

  • Your notice of assessment contains important information about your tax return, including a summary of your assessment, any changes made to your return during processing, and information about your refund or balance owing.
  • You can also find information about your contribution room for your RRSP and TFSA accounts.
  • If you disagree with your notice of assessment contact the CRA
Last updated May 15, 2024

Articles in this section

Articles read
How and why to file your taxes 7 min read
How income tax works 3 min read
Understanding the tax deductions on your pay stub 4 min read
Reducing the tax taken from your pay cheque 2 min read
How to avoid tax penalties and fees 6 min read
What to do if your tax return is reviewed or audited 6 min read
How your tax notice of assessment can help you 5 min read
RRSP and TFSA contributions 3 min read
Investors and tax 5 min read
5 common mistakes to avoid on your tax return 2 min read
Preparing a tax return for someone who has died 2 min read
Medical and attendant care expenses 3 min read
Claim tax credits on student loans and expenses 3 min read
Parents and tax 2 min read
Homeowners and tax 3 min read
Seniors and tax 3 min read
Caregivers and tax 2 min read
The self-employed and tax 3 min read

Post navigation

Back To:
Previous: How to avoid tax penalties and fees
6 min read
Up Next:
Next: Investors and tax
5 min read

Sign up for Investor News

Join 18,000+ subscribers and stay informed with timely articles, the latest investor warnings and financial literacy resources like videos, calculators and quizzes.

Past issues
  • April 8, 2025
  • March 18, 2025
  • March 4, 2025
GetSmarterAboutMoney.ca

Connect with us

Facebook Twitter YouTube Instagram
  • About Us
  • Contact Us
  • Investor News
  • Media
  • Glossary
  • OSC in the community
  • OSC Website
  • Terms of use
  • Privacy Policy
  • Accessibility policy

Brought to you by the OSC Investor Office

This website is provided for informational purposes only and is not a source of official OSC policy or a substitute for legal or financial advice. We recommend that you consult with a qualified professional advisor before acting on any information appearing on this website. For details, please see our full Terms of Use and Privacy policy

© Ontario Securities Commission 2025

Go back to top Reference Only