Your CRA Netfile Access Code (NAC) is a unique code that allows you to file your taxes securely. This comprehensive guide covers everything you need to know about this code.
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What Is My Netfile Access Code?
The Netfile Access Code is a unique and personalized alphanumeric code containing 8 characters issued by the Canada Revenue Agency (CRA). If you live in Québec, you get your code from the Revenue Québec. This code ensures secure filing when using the CRA’s NETFILE services.
Think of your Netfile Access Code (NAC) as a digital key, an extra layer of security for your sensitive information, such as your Social Insurance Number (SIN). The code is not mandatory for filing. However, without it, your identity verification would fail, and information from previous fiscal years would be redundant. Your access code changes every tax year, so be sure to use the latest one.
The access code does not apply to first-time filers.
For professional CPAs and tax preparation services, CRA offers EFILE for tax reporting on clients’ behalf.
You can visit the relevant article about Canada’s tax bracket to learn about which tax bracket you fall into.

Where to Find Netfile Access Code
Finding your Netfile access code is straightforward. You can find it from the following:
1. Notice of Assessment (NOA)
Your Netfile access code can be found on Notice of Assessment (NOA) from the previous year, located at the top right corner of your first page under Date Issued.
2. CRA My Account
You can also easily retrieve your code by logging into your CRA My Account.
3. For Québec Taxpayers
Québec taxpayers can find their Netfile access code on their provincial tax documents instead of CRA-issued documents.
4. CRA Contact Options
Contact CRA if you still cannot find your code after using all the methods above.
Does Netfile Access Code Change?
CRA Netfile access codes change every tax year. The CRA does this to secure Canadian taxpayers’ information and prevent potential fraud.
Using the correct code is essential to report and assess accurate income tax and avoid delays. Each year, the CRA issues a new code on Notice of Assessment and regular filers must use the updated code for the corresponding fiscal year.
Why is CRA Netfile Access Code Important?
Your CRA Netfile Access Code serves several purposes, such as for:
1. Authentication & Enhanced Security
The CRA Netfile Access Code reduces the risk of unauthorized filings or fraudulent activity.
2. Annual Accuracy
The NETFILE access code changes annually to ensure your tax filing remains confidential.
3. Quick and Error-Free Filing
The access code helps CRA process your tax returns efficiently, minimizes errors, and speeds up tax credits, GST / HST rebates, tax benefits, and refunds.
4. Access to Online Tax Filing Tools
Your NETFILE access code makes the process seamless as it directly integrates with the CRA systems for quick submissions.
Restrictions to CRA Netfile Tax Account
NETFILE is accessible for every taxpayer, but certain restrictions apply. NETFILE cannot be used if:
- You need to update personal information (name or address).
- You declared bankruptcy in fiscal year 2023 or 2024 or are a non-resident of Canada.
- You are tax reporting for another person (family member or spouse) or for any other fiscal year before 2017.
Filing Tax Returns Via Software
Tax software, such as TurboTax, is highly compatible with CRA NETFILE and helps streamline tax forms submission. Filing online is convenient but not ideal for complex tax situations. In this case, you benefit more from getting expert tax assistance.
Other FAQs
No, CRA login credentials are for accessing your CRA My Account while Netfile Access Code is specifically for personal tax filing.
Yes, if you are a taxpayer assisted by a tax preparation service, you must provide them explicit consent while ensuring sensitive information is protected.
Yes, the taxes can be filed online using Social Insurance Number (SIN) but the process may take longer.
If the access code and NOA is misplaced, or you are filing for the first time and did not receive NOA for the previous tax year, contact CRA directly to resolve the issue.
Immediately contact CRA to report the issue and protect your account from potential fraud.
Simplify Tax Filing with Legend Fusions
Securing an updated CRA Netfile access code yearly is key to a seamless tax filing process. Whether filing via TurboTax or relying on professional CPAs, keeping your code handy and leveraging the tools and resources is necessary for a stress-free tax filing experience.
At Legend Fusions, we offer expert guidance, personalized support, and innovative solutions to ensure you maximize your tax benefits, refunds, and credits. With our expertise and precision, you can submit your returns confidently. Talk to our tax return accountant today!

Jeffrey Ross
Jeffrey Ross is an experienced tax accountant focused on US-Canada cross-border taxation, with over three years in the industry, including a key role as client manager at a Canadian tax firm. He provides expertise in corporate and personal tax planning, specializing in non-resident tax, capital gains, CRA and IRS compliance, and retirement planning. Known for his personalized approach, Jeffrey is dedicated to guiding clients with clear, practical advice tailored to complex tax scenarios, aligned with the evolving tax laws.