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Notice of Assessment (NOA)


A Notice of Assessment (NOA) is a formal statement issued by a tax authority, such as the IRS or Canada Revenue Agency, after they have processed your income tax return. This document includes details about your taxable income, tax deductions, tax credits, refund, or any amount you may owe. It serves as an official record of your tax filing and is needed for certain legal and financial processes.


The phonetic pronunciation of “Notice of Assessment” (NOA) would be: “Know-tiss-uhv-uh-ses-muhnt” (NOA).NOA would be pronounced as “En-oh-ey”.

Key Takeaways


  1. The Notice of Assessment (NOA) is an annual statement issued by tax authorities, like the Canada Revenue Agency or the Internal Revenue Service in the United States. The NOA outlines a taxpayer’s income, deductions, credits, and the total tax they owe. It is essentially a review and summary of their tax return for that year.
  2. One should review their NOA carefully once received. The NOA can be used to identify any discrepancies between the calculated tax obligation and what was submitted in the tax return. If there are discrepancies, it could be an indication of an error on the tax return, or it may mean the tax authority has made changes to the tax return.
  3. The NOA is an important document and should be kept along with other tax records for at least six years. It may be needed for various tasks such as applying for a loan, proving income or even amending a previous year’s tax return.



The Notice of Assessment (NOA) is a critical document in business and finance as it serves as a formal statement from a tax authority, usually sent after the tax agency has processed a tax return. It provides crucial details about the individual’s or company’s tax return, the amount of tax owed, any penalties incurred, the balance due, or funds to be refunded. As such, it is a key document for verifying information for securing loans, mortgages, or other financial transactions. Understanding and keeping track of NOAs can help ensure financial integrity and compliance, prevent potential tax-related legal issues, and improve financial planning and management.


The Notice of Assessment (NOA) serves a critical purpose in the financial activities of both individuals and businesses, as it details an evaluation of your tax return by your national tax authority, such as the Canadian Revenue Agency (CRA) in Canada or the Internal Revenue Service (IRS) in the United States. The NOA provides a summary of the amounts you declared, the final assessment from the authority, any adjustments they may have made, amount of tax owed, payments, credits, and if a refund is due. Thus, the NOA is an essential tool for communicating the outcomes of a tax assessment, and it ensures transparency in the computation of taxes.Moreover, the Notice of Assessment proves useful in other financial situations. For instance, when applying for credit or a loan, financial institutions may request a copy of your NOA as proof of income. This is particularly common for self-employed individuals, as the NOA serves as confirmation of earnings. Additionally, in some territories or situations, the document verifies your contribution to a Registered Retirement Savings Plan (RRSP) or other special tax-free savings accounts. Therefore, the NOA offers crucial credentials in various financial dealings, affirming that all particulars regarding your earnings and taxes are accurate and authenticated.


1. Canadian Income Tax Notice: The Canada Revenue Agency (CRA) sends a Notice of Assessment (NOA) to all taxpayers every year after processing their income tax return. This is a comprehensive summary detailing the amount of income tax they owe, the deductions they can avail, and the credits they have earned for that tax year. This document is important for individuals and families as it outlines their financial obligation to the government.2. Property Tax Notice: In various jurisdictions such as California in the United States, homeowners receive a Notice of Assessment each year that indicates value the county assessor has assigned to their real estate for that tax year. The notice includes the property’s assessed value, exemptions (if any) and the estimated property tax to be paid for the year, based on the assessment. 3. Local Business Tax Assessment: Business owners may also receive a NOA from local government tax authorities, like in Singapore where the Inland Revenue Authority of Singapore (IRAS) issues NOAs to businesses regarding their corporate tax, Goods and Services Tax (GST), or other taxes. This notice gives details about the assessed income, tax computation, amount of tax chargeable, and deadlines for the payment or appeal. The NOA serves as an official record for businesses outlining their tax responsibilities for the fiscal year.

Frequently Asked Questions(FAQ)

What is a Notice of Assessment (NOA)?

A Notice of Assessment (NOA) is a statement sent by tax authorities to taxpayers detailing the amount of income tax they owe. It outlines the financial information from the tax return, assesses the accuracy, and, if necessary, makes adjustments.

How often are Notices of Assessment issued?

NOAs are usually issued once a year, generally after the individual, corporation, or entity has filed their annual tax return.

Where can I find my Notice of Assessment?

Your NOA can often be found in your online tax authority account, such as the CRA My Account for Canadians, or mailed to you directly.

What kind of information does a Notice of Assessment contain?

An NOA includes the taxpayer’s contact information, the tax year, the date of assessment, balance details, and an explanation of changes if any were made to the tax return.

What if there’s an error on my Notice of Assessment?

If you believe there is an error on your NOA, you should contact your tax authority directly. You usually have a specific period in which to dispute the assessment.

What is the purpose of keeping my Notice of Assessment?

Keeping your NOA can be useful for maintaining accurate financial records, it’s often required when applying for loans or mortgages to prove income, and it’s also needed if you need to dispute the assessment.

Is a Notice of Assessment the same as a tax bill?

Not exactly. While both documents relate to your taxes, a tax bill asks for payment. An NOA, on the other hand, is an explanation of the calculation of the tax, refunds, or any credits.

Can I use a Notice of Assessment to confirm my income?

Yes. Original or certified copies of your NOA are often accepted as proof of income by lenders and other entities.

Can I ignore a Notice of Assessment?

Ignoring a Notice of Assessment is strongly discouraged as it contains important information about your tax situation. Failure to act if you owe taxes could lead to penalties and interest.

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