How to Write a Self-Employed Invoice in Quebec

When a contract is finished, the invoice is the document that turns completed work into an amount the client can approve and pay. For a self-employed worker in Quebec, the invoice should be clear enough for the client, useful for your records, and ready for GST/QST if you are registered.

Before you write the invoice

Collect the client name, billing address, billing email, agreed price, payment terms, and any purchase order or project reference. If the client is a business, ask for the legal business name before sending the PDF.

Required invoice sections

• Seller information: your name or business name, address, email, and phone.
• Client information: client name, business name, address, and email.
• Invoice number: unique and sequential.
• Invoice date: the date you issue the invoice.
• Due date: the date payment is expected.
• Description: what you delivered, with enough detail to avoid confusion.
• Amount: quantity, rate, subtotal, taxes, and total.
• Tax numbers: GST and QST numbers if you charge those taxes.
• Payment instructions: e-Transfer, card, cheque, bank transfer, or other method.

Numbering examples

Avoid reusing numbers. If an invoice is cancelled, keep a note instead of silently replacing it with a different invoice.

Quebec invoice example

Field | Example

Date | June 20, 2026

Subtotal | $800.00

GST 5% | $40.00

QST 9.975% | $79.80

Total due | $919.80

Common mistakes

• Sending a Word or spreadsheet file that can be edited accidentally.
• Forgetting a due date.
• Charging GST/QST before being registered.
• Omitting GST/QST numbers when taxes are charged.
• Using vague descriptions like consulting services without a project detail.
• Starting invoice numbers over again without a clear reason.

Sending and following up

Send the invoice as a PDF. The email can be short: mention the invoice number, amount due, due date, and payment method. If payment is late, follow up with a polite reminder that includes the invoice number and amount.

Use invoice generator to create the PDF, or read Self-Employed Invoice Quebec for a broader guide to records, taxes, and payment habits.

Should I include my SIN on an invoice?

R: No. Use your business details and tax registration numbers when applicable, not your personal SIN.

Can I write the invoice manually?

R: Yes, but a PDF generator reduces calculation and formatting errors.

What if I am not registered for GST/QST?

R: Do not charge those taxes. You can still issue a professional invoice without tax lines.