GST and QST, kept apart
In Quebec the federal GST (5%) is paired with the Quebec Sales Tax (9.975%). Revenu Québec administers QST separately from the CRA, so a Quebec business keeps two registration numbers and prepares two returns.
HelloBooks records GST and QST on separate ledger accounts, on both sales and purchases, so each return is prepared from its own figures. You file the GST/HST return with the CRA and the QST return with Revenu Québec.
For the full rate and registration detail, see the Quebec GST + QST page.