T4 information return

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Filing due date

In all instances, you have to file your T4 information return on or before the last day of February following the calendar year that the information return applies to. If the due date falls on a Saturday, or a Sunday, your return is due the next business day.

We consider your return to be filed on time if we receive it or it is postmarked on or before the due date. If you fail to file it on time, we may assess a penalty.

If you have more than one payroll program account, you will have to file a separate information return for each account.

If you have overpaid, include a letter explaining the reason for the overpayment and how you want us to apply it. If you owe an amount, send the account information and tax year with your payment.

If your business or activity ceases during the year, you have to file a T4 information return within 30 days of ending your business or stopping your activity.

If you need to file early due to bankruptcy or if your business stops operating, you are required to file within 30 days from the date your business ends.

If the owner of a business dies, the T4 slips and T4 Summary have to be filed within 90 days from the date of death.

Filing methods

You must file information returns by Internet if you file more than 50 information returns (slips) for a calendar year. For more information, go to Filing Information Returns Electronically (T4/T5 and other types of returns).

Filing on paper – 1 to 50 slips

You can file up to 50 slips on paper. However, we strongly encourage you to file online using Internet file transfer (XML) or Web Forms.

If you need more paper copies, you can order a maximum of 9 single-page slips at forms and publications or by calling 1-800-959-5525. There are two slips per page intended for printers, for typing or to be filled out by hand.

If you choose to file your return on paper, mail it to:

Jonquière TC
T4 Program
Post Office Box 1300 LCD Jonquière
Jonquière QC G7S 0L5

Courier address (delivery only):

Jonquière TC
T4 Program
2251 René-Lévesque Boulevard
Jonquière QC G7S 5J2

Fill out one copy of the T4 slip for each employee and include it with your T4 Summary when you file. Enter the information for two different employees on one sheet. You must keep the information from the T4 slips and the T4 Summary or a copy of these forms for your files.

Filing electronically

If you have or want to file electronically, read Filing Information Returns Electronically (T4/T5 and other types of returns).

Balance due

A remittance that was due in January of the current year for deductions made in December of the previous year is considered late when paid with the previous year's information return (T4 or T4A) and this return is filed after the remittance due date. The CRA can assess a penalty and interest on late remittances.

Whether you file electronically or file a paper return, you can make your payment in several different ways. For more information, go to Payment to the Canada Revenue Agency or see Pay (remit) source deductions.

Regardless of your filing method, if you are a threshold 2 accelerated remitter, you must remit any balance due electronically or in person at your Canadian financial institution. For more information, see Guide T4001, Employers’ Guide – Payroll Deductions and Remittances.

We will charge you a fee for any payment that your Financial institution refuses to process. If your payment is late, we can also charge you a penalty and interest on any amount you owe.

Service bureaus and branch offices filing returns

If a service bureau is filing an information return for you, you are still responsible for the accuracy of the information, for any balance owing, and for filing on time.

If the branch office of a company has sent in CPP contributions, EI premiums, and income tax deductions under a separate account that only that branch uses, file the T4 information return of that branch as a separate return.

What happens after you file?

When we receive your information return, we check it to see if you have prepared it correctly. After an initial review, we enter your return into our processing system, which captures the information and performs various validity and balancing checks. If there are any problems, we may contact you.

We also verify the calculations you made on the T4 slips to make sure that the pensionable and insurable earnings you reported agree with the CPP and EI deductions you remitted. If you receive a pensionable and insurable earnings review (PIER) report, do not send us amended slips. Instead, respond to the PIER advising of the changes required for the employees on the listing. For more information, go to Pensionable and insurable earnings review (PIER).

After filing your information return, you may notice that you made an error on a T4 slip. If so, you will have to prepare an amended slip to correct the information. For information, go to Amending, cancelling, adding, or replacing T4 slips.

If you made an overpayment of salary, wages, or other remuneration to an employee, see Correcting reporting errors and salary overpayments for more information on how to correct an error.


You do not have to file an amended T4 slip if the only change is to the employee’s address.

CPP contributions and EI premiums are sometimes deducted in error from exempt income. The employer may report the deduction and the exemption on the original T4 slip. Amendments may be necessary to allow the individual to be credited through an income tax and benefit return.

A T4 slip should be cancelled if it is issued to a proprietor or partner in an unincorporated business. They should report their income as business income on an income tax and benefit return, along with a statement of revenue and expenses.

For information on salary overpayments, go to Correcting reporting errors and salary overpayments.

Other federal government departments use T4 information. For example, Employment and Social Development Canada (ESDC) uses the information on the T4 slip to update a person’s record of earnings file. The information on CPP contributions that we send to ESDC determines the CPP benefits that a person will receive.

Forms and publications

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