HST Filing Deadline – October 31 (September Reporting)
October 31
Who must file: Monthly GST/HST filers.
What period it covers: September 1–30, 2026.
Penalty reminders: CRA charges penalties and interest on late filings.
Who must file: Monthly GST/HST filers.
What period it covers: September 1–30, 2026.
Penalty reminders: CRA charges penalties and interest on late filings.