Beginning January 1, 2024, businesses filing six or more information returns (slips and summaries) must file electronically. This removes the clause that allowed a filer with 50 or fewer information returns to file by paper. Businesses filing five or fewer information returns can still choose to file by paper.
Examples of information returns include the T4 payroll return (renumeration paid), T5 (investment income), T3 (trust income) and T4A (pension and other income return).