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March 22, 2026·2 min read·Patrick

Québec taxes, and forgetting they exist.

Three fields you set once. A PDF your accountant won't complain about. Done.

If you live in Québec and bill more than $30,000 a year, you have a GST number and a QST number. You have to show them on every invoice. You have to compute 5 % and 9.975 %. You have to remit those amounts to Revenu Québec.

Half the invoicing tools I tried as a freelancer think tax is a single number. They come from elsewhere. It shows.

The three fields

In Sablio you open Settings → Invoicing. You see three fields:

  • GST number (9 digits, suggested prefix)
  • QST number (10 digits, TQ0001 auto-completed)
  • Rate — pre-filled at 5 % / 9.975 %

You enter them once. You'll never open them again unless you move out of Québec.

What it does on the invoice

Every PDF you export includes automatically:

  • Your GST and QST numbers, displayed next to your name,
  • A GST — 5.00 % line with the computation,
  • A QST — 9.975 % line with the computation,
  • Subtotal, both taxes, and total, properly aligned.

It's the format your accountant recognizes. It's the format a Revenu Québec auditor doesn't challenge.

For the quarterly remittance

Four times a year, you remit the GST and QST you collected. Miroir → Taxes collected → quarter. You get one number for each tax. You copy it into the Revenu Québec portal. You're done.

No spreadsheet to build. No formula to verify. You used to spend 40 minutes per quarter on this; now it's 6.

The detail other tools miss

Many US tools write Tax on the invoice. One field. In Québec, one field is wrong: GST and QST are two distinct taxes, for two distinct governments, with two distinct account numbers. An auditor who sees Tax — 14.975 % on a Québec invoice sighs.

We wrote Sablio here. Formats, words, rates — everything is tuned for Québec by default. You don't configure a country. You're already in the right place.

— Patrick

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