The following return types can be filed by internet file transfer—T3, T4, T4A, T4A(OAS), T4A(P), T4A-NR, T4E, T1204, T4RSP, T4RIF, T5, T5007, T5008, T5018, NR4, AGR-1, T215, SAFER, and RRSP contribution return.
If you use payroll, commercial, or in-house developed software to manage your business, you can file 1 to 500 slips (610 Kb) over the Internet. For T1204 returns, the maximum file size is 700 slips (610 Kb).
Most common problems when creating XML file
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