Invoicing Guide for Canadian Freelancers 2025

Invoicing is the bridge between completing your work and getting paid — and in Canada, invoices carry legal and tax significance beyond simply requesting money. A properly structured invoice documents your income for CRA purposes, satisfies HST/GST requirements, and creates a paper trail that protects you if a client disputes payment. This guide covers everything Canadian freelancers need to know about invoicing in 2025.

What Every Canadian Freelancer Invoice Must Include

The CRA and the Excise Tax Act have specific requirements for what a valid invoice must contain, particularly once you are registered for HST/GST. A complete freelancer invoice should include:

• Your full legal name (or business name if you operate under one)
• Your business address (or mailing address)
• Invoice number — sequential, unique identifier
• Invoice date — the date the invoice is issued
• Client's name and address
• Description of services — specific enough that CRA and client both understand what was delivered
• Quantity and rate (hours × hourly rate, or project fee)
• Subtotal before tax
• HST/GST number (if registered) and the tax amount
• Total amount due
• Payment terms (due date, accepted payment methods)

HST Requirements on Invoices

Once you are registered for HST/GST, your invoices must include your GST/HST registration number (Business Number + RT0001). The CRA specifies different documentation requirements based on invoice total:

If you are not yet registered for HST (below the $30,000 threshold), do not add HST to your invoices and do not include a GST/HST number — you don't have one yet and cannot legally collect the tax.

Payment Terms

Payment terms specify when you expect to be paid. Common terms for Canadian freelancers:

• Due on receipt: Payment expected immediately upon receiving invoice
• Net 15: Payment due 15 days from invoice date
• Net 30: Payment due 30 days from invoice date (most common for B2B)
• 50% deposit, 50% on completion: Common for larger projects
• Milestone-based: Payment tied to project deliverables

Shorter payment terms improve your cash flow — many clients pay on whatever schedule you specify, so starting with shorter terms is always better than starting with Net 60 and trying to tighten later.

Late Payment Fees

You can and should specify late payment interest in your contracts and on invoices. A typical clause: "Invoices unpaid after 30 days will accrue interest at 1.5% per month (18% per annum)." Late fees must be agreed to in your contract or engagement letter — you can't add them retroactively without client agreement. Late fees you collect are income and must be reported on your T2125.

Deposits and Retainers

For large projects or new clients, requiring a deposit of 25–50% upfront is standard practice and protects you against non-payment. Deposits are income when received and should be reported on your T2125 in the year they're received. For retainer arrangements (ongoing monthly fees), invoice at the start of each month for that month's retainer.

Invoicing for International Clients

Services provided to non-Canadian clients (USA, Europe, etc.) are generally zero-rated for GST/HST — you charge 0% tax. Your invoice should note "zero-rated export" in the tax field. Keep documentation proving your client is outside Canada. Invoice in whatever currency is agreed (CAD or USD), and convert to CAD for your T2125 using the Bank of Canada exchange rate on the invoice date.

Best Invoicing Tools for Canadian Freelancers

Numbering Your Invoices

Use a consistent sequential numbering system: 2025-001, 2025-002, etc. or CLIENT-001, CLIENT-002. Sequential numbering is important for CRA audit purposes — gaps in invoice numbers can trigger questions. Never reuse or delete invoice numbers; if you issue a credit note, create a separate credit memo document rather than deleting the invoice.

Following Up on Unpaid Invoices

Late-paying clients are a reality of freelance life. A structured follow-up process: send a friendly reminder at due date, a firmer follow-up one week later, a formal demand letter two weeks after that, and consider collections or small claims court for persistent non-payers. Keep all communication in writing. In Canada, small claims court limits vary by province ($20,000–$35,000) and is a legitimate avenue for unpaid freelance fees.