Canadian employers have more than one way to distribute T4 slips electronically. Email is familiar, while employee portals provide a dedicated place to access tax documents.
But the choice involves more than convenience.
The Canada Revenue Agency (CRA) treats email and secure-portal delivery differently, particularly when it comes to employee consent. advance consent, while emailing those same documents requires consent
A company may be able to publish T4 slips through a secure portal without obtaining advance consent, while emailing those same documents requires consent.
There are exceptions, too.
Former employees, employees on extended leave, and people who request paper copies need particular attention.
For employers reviewing their T4 distribution process in 2026, understanding these differences matters before deciding how documents will reach employees.
This guide compares the two methods, explains the CRA requirements, and looks at what employers should verify before distributing tax slips.
Which T4 Deadline Applies in 2026?
A T4 reports employment remuneration paid during a calendar year. Employers generally provide these slips to employees and file the corresponding information return with the CRA by the end of February of the following year.
Two dates are worth distinguishing:
| Reporting Period | Applicable Deadline |
| 2025 employment income, reported in 2026 | March 2, 2026 |
| 2026 employment income, reported in 2027 | March 1, 2027, under the standard weekend-adjusted deadline rule |
The 2025 reporting deadline moved because February 28, 2026, fell on a Saturday. Similarly, February 28, 2027, falls on a Sunday.
Employers should confirm the applicable deadline and any special circumstances against current CRA guidance.
The CRA’s Employers’ Guide – Filing the T4 Slip and Summary explains the filing and employee distribution responsibilities.
Secure Portal vs. Email: What’s the Difference?
Both methods can deliver an electronic T4, but they handle employee access differently.
With email, the employer sends the document to the employee’s email address. The employee generally depends on that message or a previously saved copy when they need the slip again.
With a secure portal, the employer publishes the document to an authorized employee account. The employee signs in to retrieve the available tax slip.
The CRA’s rules also distinguish between the methods.
| Requirement | Secure Employee Portal | |
| Advance employee consent | Not required in certain qualifying circumstances | Written or electronic consent required |
| Document access | Employee retrieves the slip through a secure account | Employee receives it through email |
| Printing | Secure printing must be available | Employee must be able to use the electronic copy |
| Paper requests | Paper copies must remain an option | Paper delivery may still be necessary |
| Former employees | Special restrictions on consent-free portal delivery | Consent rules still apply |
| Historical retrieval | Previously published slips may remain accessible | Depends on retained messages or saved files |
Email isn’t automatically inappropriate. It can be a valid distribution method when the required consent and appropriate safeguards are in place.
The question is which process the employer can manage reliably.
When Can Employers Distribute T4 Slips Through a Secure Portal Without Consent?
This is one of the most important distinctions in Canada’s electronic T4 delivery requirements.
Under the CRA’s Distribute the Slips guidance, employers can distribute T4 slips through a secure electronic portal without obtaining written or electronic consent beforehand, provided the applicable conditions are satisfied.
The exception does not apply when:
- The employee has requested paper copies.
- The employee cannot reasonably be expected to access the slip electronically when it is issued.
- The employee is on extended leave or is a former employee when the T4 is issued.
These conditions are important because having an employee account doesn’t automatically mean every employee qualifies for consent-free electronic distribution.
For example, an employee on extended leave might no longer have normal access to workplace systems. A former employee may have lost access to their company’s email address or portal account.
Employers should not assume that previously having access is enough.
The CRA also requires a secure portal through which employees can access and securely print their slips, with paper copies available as an option.
A business planning to use portal delivery should confirm that its system and employee-access procedures support those conditions.
Email Delivery Requires Employee Consent
The CRA permits employers to send T4 slips by email, but written or electronic consent must be obtained before using that method.
Simply having an employee’s email address on file doesn’t establish the required consent.
A company might already use email for general HR announcements, schedules, or paystub notifications. That doesn’t automatically authorize sending tax slips through the same channel.
Employers should know how consent was collected and where the record is maintained.
They also need to decide what happens when an employee hasn’t consented or no longer wants to receive T4 slips by email.
Sending documents through a company’s email account also introduces a practical concern: employees may lose access to that inbox after leaving.
The solution isn’t necessarily to stop using email. It is to make sure email distribution is appropriate for the recipient and supported by the required consent.
What Happens When Employees Request Paper T4s?
An electronic distribution process still needs a paper delivery option.
Under CRA guidance, when paper distribution is required, employers generally provide two copies of the T4 slip, either in person or by mail to the employee’s last known address.
Employers should have a clear process for recording paper requests and preparing the correct documents.
This becomes particularly important when a company primarily uses a secure portal. Employees shouldn’t have to rely on an informal arrangement to request a physical copy.
The CRA also provides instructions for undeliverable slips.
If an employer knows an address is incorrect, it should not send the T4 to that address. Instead, it must document why the copies were not sent and what steps were taken to obtain the correct information.
Returned or undeliverable copies should be retained with the employee’s records as directed by the CRA.
These exceptions deserve attention before the distribution deadline, not after a document is returned.
Why Secure Portal Access Can Be More Practical Than Email
Consent requirements aren’t the only consideration.
Employers should also think about what happens after an employee receives a T4.
An emailed document may be easy to retrieve initially, but locating it several months later can become difficult if the message was deleted or the employee changed accounts.
A portal provides a consistent location for previously published documents, subject to the organization’s retention and access settings.
That can be useful when employees need an earlier T4 to review income information or prepare an amended tax return.
The same principle applies to regular paystubs. Our guide to paystub self-service versus email distribution explains why retrieving existing documents shouldn’t always require payroll to resend them.
However, portal access is only useful when employees can actually use it.
Employers should test whether employees can sign in, locate the correct tax year, download the slip, and print it securely.
If account recovery is difficult or historical documents are missing, the organization may still receive repeated requests for copies.
What About Former Employees and Employees on Leave?
This is where a single distribution policy can become problematic.
A company may have a reliable secure portal for active employees but find that the same process doesn’t suit people who have left or are on extended leave.
The CRA specifically excludes those groups from its consent-free T4 portal-delivery exception.
That doesn’t mean electronic delivery is always impossible for them. It means employers shouldn’t rely on that exception without considering the applicable consent and delivery rules.
Before issuing slips, review which employees still have portal access and how documents will reach people whose employment status has changed.
For former employees, contact information should also be reviewed before distributing documents.
Keeping historical records available is useful, but record retention and continued employee access are separate matters.
Our article on employee portal scope explores why maintaining records internally doesn’t necessarily mean every former employee should retain unrestricted access.
Protecting Sensitive Information During Distribution
T4 slips contain personal and financial information, including an employee’s Social Insurance Number.
That makes correct recipient matching and account security important regardless of distribution method.
Email delivery requires care when selecting recipients and attaching documents. A message addressed incorrectly can expose someone else’s tax information.
Portal delivery changes the process but doesn’t eliminate the possibility of mistakes.
If documents are assigned to the wrong employee accounts, information may still become accessible to unauthorized users.
Before publishing tax slips, employers should review:
- How the system identifies each employee
- Whether documents are assigned to the intended accounts
- What administrators can preview before publishing
- Who can access or manage sensitive files
- How login or account-access problems are handled
These are practical security checks, not proof that a system meets every applicable privacy obligation.
Employers should assess their own privacy requirements and the safeguards provided by their chosen distribution platform.
Electronic Delivery Isn’t the Same as Electronic CRA Filing
Employers also need to separate delivery to employees from filing information returns with the CRA.
Publishing a T4 through a portal, or sending it by email, does not automatically file the slip with the CRA.
The CRA generally requires electronic filing when an employer files more than five information slips for a calendar year, subject to the applicable filing rules.
That reporting requirement concerns how the employer submits information to the CRA, not how employees receive their copies.
A business may therefore need to file electronically while distributing paper T4s to employees who cannot use its electronic delivery method.
The CRA’s How to File Information Returns guidance explains the available filing methods.
The payroll system, CRA submission process, and employee distribution platform should each have clearly defined responsibilities.
Where InStaff Fits into T4 Distribution
InStaff’s Paystubs & Tax Forms module supports Canadian T4 documents and provides employees with online access to published payroll records.
Businesses can continue using their existing payroll software to prepare the tax documents, while InStaff provides the employee-facing distribution and retrieval environment.
For payroll administrators, this separates tax-slip preparation from making completed documents available to employees.
For employees, it provides a dedicated place to access their published pay documents rather than depending entirely on individual email attachments.
InStaff also supports distributing PDF paystubs, employee self-service access, and historical document retrieval.
The system’s specific T4 upload, recipient-matching, publishing, and access configuration should be reviewed during implementation.
Importantly, using InStaff doesn’t automatically establish employee consent or remove the employer’s CRA responsibilities.
Businesses still need to determine which employees qualify for portal delivery without consent, which requires another permitted delivery method, and how paper requests will be handled.
For organizations evaluating their broader employee tools, our guide to employee portal features provides additional questions about access, permissions, usability, and payroll compatibility.
A Practical T4 Distribution Checklist for Canadian Employers
Before the next T4 distribution period, review the process from the employee’s perspective as well as the administrator’s.
| What to Check | Why It Matters |
| Distribution method | Portal and email have different consent requirements |
| Employee eligibility | Not everyone qualifies for consent-free portal delivery |
| Email consent | Required before sending T4 slips by email |
| Paper requests | Employees must have an appropriate paper-copy option |
| Former-employee access | Employment status can affect the permitted delivery method |
| Portal security | Documents must reach the correct employee accounts |
| Printing | Employees need a secure way to print portal-delivered slips |
| Deadline | Employees and the CRA must receive the required information on time |
| CRA filing | Employee distribution doesn’t replace the employer’s filing obligation |
Run through these questions before uploading the final documents.
If the company uses more than one delivery method, keep track of which method applies to each employee.
That is more useful than assuming everyone can handle through the same channel.
Frequently Asked Questions
Can Canadian employers send T4 slips by email?
Yes. The CRA permits email distribution when the employer obtains the employee’s written or electronic consent beforehand.
Can employers post T4 slips to a secure portal without consent?
Yes, in qualifying circumstances. However, the CRA’s consent-free exception does not apply when the employee requests paper, cannot reasonably access the electronic form, or is a former employee or on extended leave when the T4 is issued.
Do employees have the right to request paper T4 slips?
The CRA requires employers using secure portal distribution to provide a paper-copy option. When paper distribution is required, employers generally provide two copies.
Can InStaff distribute Canadian T4 slips?
Yes. InStaff supports Canadian T4 documents through its Paystubs & Tax Forms capabilities. Employers should confirm their specific upload, publishing, and employee-access requirements during implementation.
Choose a Delivery Method That Works for Your Employees
Secure portals and email can both play a role in T4 distribution, but they aren’t interchangeable under CRA guidance.
For qualifying employees, a secure portal can provide a convenient way to retrieve published tax documents without requiring advance consent under the applicable exception.
Email remains an option when the necessary consent has been obtained.
Paper distribution also remains important, particularly when electronic access isn’t appropriate, or an employee requests physical copies.
The right approach accounts for those differences before tax slips are issued.
If your organization wants a more organized way to distribute T4s and other payroll documents while keeping its current payroll system, contact the InStaff team to discuss how its Paystubs & Tax Forms module could support your employee document process.
