Quick Answer
- No. For the 2026 tax year, you are not required to sign in to CRA My Account before your tax preparer files your return. The new authentication step is optional for the 2027 filing season.
- If you choose to sign in, you confirm your identity and verify that the person filing is authorized to do so on your behalf. This adds a layer of security but does not change the outcome of your return.
- Your accountant can still file your 2026 return through EFILE even if you do not have a CRA My Account. First-time filers and clients without online CRA access are not blocked from filing.
- The CRA says the optional step gives taxpayers a chance to try the process before any future rollout. ClearWealth generally recommends opting in if your My Account is active, as it also protects against unauthorized changes to your tax file.
Why the CRA Changed the Filing Process This Year
If you have heard that something is different about filing your 2026 taxes, you are not imagining it. The Canada Revenue Agency, the federal agency that administers income tax in Canada, is rolling out a new optional sign-in step for the upcoming filing season that opens on February 22, 2027.
The change is a response to a sharp rise in CRA account takeover scams over the past two years, where fraudsters file returns using someone else’s identity and redirect refunds to accounts the taxpayer never opened. The new authentication layer gives taxpayers and preparers a verifiable way to confirm who is behind the filing.
The important part for most readers: this is optional for the 2026 tax year. Your accountant can continue filing exactly as they always have. If you want to know what the step does, whether you should opt in, and how to prepare before your appointment, this guide walks through it from the perspective of a working Ontario accounting firm, the kind of plain-English answer you would get across the desk from one of our tax filing services.
Pick Your Path: Which Filer Are You?
The optional authentication step affects individuals filing a T1 personal income tax return. Below is what it means for the four most common filer types we see at ClearWealth. The filing path you take depends on your situation.
If you are a salaried employee who files a simple T1 return each spring, the new step is entirely optional. You can continue to have your accountant file your 2026 return without touching CRA My Account at all.
Sole proprietors file their business income on the same T1 return as personal income. The optional step applies to you in the same way. Your June 15, 2027 extended filing deadline is unchanged.
Corporate T2 returns go through CRA Represent a Client, which has its own authorization process and is not affected by this announcement. Your personal T1 return, however, is.
If you have never set up CRA My Account, you are not locked out of filing. Your preparer can transmit your return through EFILE without the authentication step.
What the Optional Authentication Step Actually Does
The authentication step is a one-time CRA My Account sign-in that happens during the EFILE or NETFILE transmission flow. It is not a biometric check, an in-person verification, or a new form. It is a secure sign-in on your own device, through the same CRA credentials you already use to view your tax slips or Notice of Assessment.
Here is the key distinction most reporting on this change has skipped. NETFILE is the self-serve filing channel used by taxpayers filing their own returns with tax software. EFILE is the professional channel used by registered tax preparers and approved volunteers. When a NETFILE user authenticates, they are confirming they are the taxpayer. When an EFILE user authenticates, they are confirming they are the preparer initiating the transaction.
In both cases, the authentication is optional for the 2026 tax year. The CRA has framed the step as a trial run so that taxpayers and preparers can become familiar with it before any future rollout. You can read more about related CRA developments in our more tax insights for Ontario filers.
NETFILE Versus EFILE Authentication at a Glance
The two filing channels are built for different users and the authentication step does different jobs in each. The comparison above sets out the practical differences side by side.
The practical takeaway is simple. Whether you file your own taxes through NETFILE software or hand everything to a preparer who uses EFILE, the authentication step is available to you but not required. In both cases, your identity is being confirmed to the CRA at a different point in the process than it has been before, and only if you choose to use it.
Step-by-Step: What to Do Before Your 2027 Tax Appointment
Whether you plan to opt in or not, a short pre-season check of your CRA My Account is worth the ten minutes. The six steps below are the same checklist we walk our clients through at ClearWealth each January.
- 01Confirm your CRA My Account is activeSign in now, not on filing day. Many taxpayers discover a locked account only in April, when CRA call wait times are longest.
- 02Verify your mailing address is currentThe CRA sends important correspondence by mail, including identity verification letters, and an out-of-date address can delay refunds.
- 03Check your direct deposit informationA refund sent to a closed or incorrect account typically takes four to six weeks to recover.
- 04Review your multi-factor authentication methodAdd a backup option such as a secondary phone number. Losing access to your primary device during tax season is one of the most common lockout causes.
- 05Scan the Authorized Representatives sectionIf you see an unknown preparer, remove them immediately and call the CRA to report it.
- 06Locate your most recent Notice of AssessmentEither in My Account or in your paper records. The CRA uses it as a knowledge-based identity check if you need to recover account access.
Once these six items are confirmed, you are ready for the 2027 filing season regardless of whether you plan to use the optional authentication step. If you would prefer professional help running through the checklist, you can book a consultation with our team before the season opens.
Why Opting In Is Worth It (Even Though It Is Optional)
The quiet upside of the authentication step is one that most news coverage has missed. When you sign in and authenticate during the filing transaction, the CRA records that your verified identity authorized the submission. If anything on the return is later disputed, that audit trail generally makes CRA correspondence easier to resolve.
There is also a scam-prevention angle. Over the past two years, the CRA has reported a sharp increase in fraudulent returns filed using stolen credentials, with refunds redirected to accounts the real taxpayer never opened. Opting into the authentication step adds a layer that an attacker cannot easily bypass without access to your sign-in credentials and your multi-factor authentication device.
At ClearWealth, we generally recommend opting in if your CRA My Account is already active and in good standing. The step takes under a minute and the protective value is real. You can see examples of how we have helped similar clients through CRA disputes in our case studies.
Common Mistakes to Avoid This Filing Season
The following six mistakes come up every tax season at our office. All of them are preventable with ten minutes of preparation.
- →Waiting until April to discover that your CRA My Account is locked. Peak-season call volumes mean recovery can take days.
- →Assuming your preparer can authorize themselves to access your account. Since July 2025, every authorization request must be confirmed by the taxpayer through CRA My Account.
- →Ignoring CRA email notifications about account changes. These alerts are the earliest warning sign of unauthorized access and should be reviewed the day they arrive.
- →Filing with an outdated mailing address. Any refund, assessment, or follow-up correspondence can be delayed or returned to the CRA.
- →Sharing your CRA My Account password with a tax preparer. No legitimate accountant will ever ask for your password, and sharing it violates the CRA terms of use for the service.
- →Treating the word optional as not important. If identity theft or scam activity is already a concern on your account, opting in is the stronger choice.
Frequently Asked Questions
Do I have to sign in to CRA My Account before my accountant files my 2026 taxes?
What happens if I skip the new CRA authentication step?
Can my tax preparer file my return if I do not have a CRA My Account?
Is the CRA sign-in step the same as giving my accountant my password?
How do I set up CRA My Account if I have never used it before?
What should I do if I am locked out of CRA My Account right before tax season?
Will the optional authentication step become mandatory in future years?
Does this new step apply to corporate T2 tax returns too?
Talk to an Ontario Tax Professional Before the Season Opens
The CRA new authentication step is optional for the 2026 tax year, your preparer can file your return either way, and a ten-minute My Account check in January typically prevents the most common tax-season headaches. If you would like help getting ready for the February 22, 2027 opening, you can speak to a ClearWealth advisor at any time.
Book a ConsultationSources & References
- Canada Revenue Agency — Tax Tip: The CRA is enhancing security for online income tax and benefit return filing. canada.ca/en/revenue-agency.html
- Canada Revenue Agency — What you need to know for the 2026 tax-filing season. canada.ca/en/revenue-agency/news/newsroom/tax-tips/tax-tips-2026/
- Canada Revenue Agency — CRA sign-in services and My Account registration. canada.ca/en/revenue-agency/services/e-services/cra-login-services.html
- Canada Revenue Agency — Authorize a representative: changes to EFILE representative authorization effective July 15, 2025. canada.ca/en/revenue-agency/services/tax/representative-authorization.html
- Canada Revenue Agency — Register Again self-serve CRA account recovery option. canada.ca/en/revenue-agency/services/e-services/digital-services-individuals/account-individuals.html
- Investment Executive — Tips for taxpayers to keep their CRA accounts secure. investmentexecutive.com/news/tips-for-taxpayers-to-keep-their-cra-accounts-secure/
