Remittance Schedules of the QST and GST/HST
You must remit the GST and QST that you collected and must do so by the deadline that applies to your reporting period.
The date of receipt of a payment is the date on which the payment is received by Revenu Québec or by a financial institution. If you write a postdated cheque, the date of receipt is the date on which the cheque is cashable.
If your filing deadline falls on a Saturday, Sunday or statutory holiday, the deadline is extended to the next day that is not a Saturday, Sunday or statutory holiday.
To be alerted whenever a filing deadline for the QST or the GST/HST is coming up, go to My Account for businesses and sign up for alerts using the Sign Up for Tax Obligation Alerts and New Message Notifications service.
So that you receive the alerts and notifications you signed up for, make sure the email address in your user account is correct.