Depending on the number or type of slips you are filing, choose from the following options:
If you use payroll, commercial, or in-house developed software to manage your business, you can submit original or amended T4/T5 and other types of returns files of up to 150 MB using the Internet file transfer application.
Be sure to read Before you file before transmitting your return.
Use the Web Forms application to electronically file your T3, T4, T4A, T4A-NR, T4E, T4RIF, T4RSP, T5, T5007, T5008, T5018, or NR4 information returns. With each submission, you can include up to 50 slips.
Be sure to read Before you file before transmitting your return.
Use the T4 Desktop application to file 1 to 70 original or amended T4 slips.
Be sure to read Before you file before transmitting your return.
Use the T1204 Desktop application to file 1 to 5,000 original or amended T1204 slips.
Be sure to read Before you file before transmitting your return.