Amending T4 slips

If you are an employee

If you are an employee who has received an amended T4 slip, and have questions concerning its issuance, contact your employer.

If you are an employer

Before you file your return

If you notice errors on the T4 slips before you file them with us, you can correct them by preparing new slips and removing any incorrect copies from the return. If you do not prepare a new slip, initial any changes you make on the slip. Be sure to also correct the T4 Summary.

After you file your return

After filing your information return, you may notice that you made an error to any information you already submitted on a T4 slip. If so, you will have to prepare an amended slip to correct the information.

Amending slips over the Internet

To amend a slip over the Internet, change only the information that is incorrect and retain all of the remaining information that was originally submitted. Use summary report type code “A” and slip report type code “A.”

For more information about amending information returns using the Internet, go to Filing Information Returns Electronically (T4/T5 and other types of returns).

If you amend slips using the Internet, we may contact you to find out why.

Amending slips on paper

If you choose to file your amended return on paper, clearly identify the slips as amended slips by writing “AMENDED” at the top of each slip. Make sure you fill out all the necessary boxes, including the information that was correct on the original slip. Send two copies of the amended slips to the employee. Send one copy of the amended slips to any tax centre with a letter explaining the reason for the amendment.

Do not file an amended T4 Summary.

If you receive a pensionable and insurable earnings review (PIER) report

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).

Related topics

• Pensionable and insurable earnings review (PIER)

Date modified:

2015-12-17