POS system for Quebec businesses

Quebec sales tax at a glance

Most sales in Quebec carry GST at 5% and QST at 9.975%, for a combined 14.975%. For most businesses both are administered by Revenu Québec, which means one registration body but two taxes with their own lines on the return. QST is calculated on the price before GST, not on top of it.

Basic groceries are zero-rated for both taxes, and some goods and services are exempt. Rates and rules change, so confirm them with Revenu Québec as of 2026. Restaurants and bars should also read the section below on mandatory billing, because Quebec has extra requirements for those businesses that go beyond tax rates.

Setting up GST and QST in SeroPOS

In the back office open Settings, then Tax Rates. Add GST (or TPS) at 5% and QST (or TVQ) at 9.975%, and tick "for tax group only" on QST. Then open Tax Groups and create a group, for example "TPS + TVQ", from the two. In the SeroPOS app the same screens are under Admin, then Taxes.

Make the group the default tax, give zero-rated items a 0% rate, and set any exempt items accordingly. Each tax in the group is worked out on the price before tax, so the QST line matches the way Revenu Québec expects it. In Business Settings, the Tax tab holds both tax names and registration numbers for your invoices.

• GST / TPS 5%
• QST / TVQ 9.975%, "for tax group only"
• TPS + TVQ group for taxable sales
• 0% for zero-rated items

Restaurants, bars and French

Quebec has mandatory billing rules for restaurants and bars: sales must be recorded through a sales recording module approved by Revenu Québec, and bills must meet specific requirements. These rules apply to the business, whatever POS it uses. If you run a restaurant or bar in Quebec, check what Revenu Québec requires and contact us before you choose SeroPOS for that location.

On language: back office in 16 languages; in-app help in 11; app screens in English. French is one of the back-office languages and one of the help languages. Receipt headers, footers, product names and tax names are text you type, so customers can see French on what you print. Check that this meets your obligations under Quebec's language rules.

Taking Interac, Visa and Mastercard

The cashier picks Debit or Credit on the payment screen and SeroPOS hands the amount to the terminal. Moneris Go is set up in Moneris Pay Settings with your merchant, store and terminal IDs. Global Payments connects through Global Pay Cloud by binding the terminal's device reference to the till, or by running SeroPOS directly on a T650P with Terminal Plus.

A tip typed on the terminal comes back and prints as Tip / Gratuity. If a card is approved but the sale doesn't save, SeroPOS keeps the approval in an outbox and records it again, and a duplicate-charge guard warns before the same card is charged the same amount twice. Check on Terminal reads the batch when you're not sure.

Already have a merchant account? Keep it if your processor is supported. If you want to compare costs, send us a recent statement and we'll quote a rate. Card processing is arranged separately from your SeroPOS plan. Tell us your monthly card volume and the terminals you use today, and we can say which setup fits your counter before you commit.

Tax reports and QuickBooks Canada

The Tax Report in the back office shows output tax on sales, input tax on purchases and tax on expenses, with an overall figure and the invoices behind each number, filtered by location and date range. The Daily Sales Report adds a tax summary for remittance, with each tax shown separately, and it can be downloaded as a PDF or emailed at day end.

On the Pro plan SeroPOS sends sales, payments, customers and items to QuickBooks. QuickBooks Desktop, Canadian edition 2021 or later (Pro, Premier or Enterprise on Windows), connects through the Web Connector, and SeroPOS can build the GST and QST tax items, groups and codes there for you, matched by rate rather than by name. QuickBooks Online for Canadian companies is supported too, with each SeroPOS rate mapped to a QuickBooks tax code.