Client Refuses to Pay Invoice in Canada: Your Legal Options and How to Prevent It

Your invoice is 45 days overdue. Three follow-up emails sent. Complete silence. When a client refuses to pay an invoice in Canada, you have real legal options — and most unpaid debts under $50,000 can be resolved without hiring a lawyer. What you do in the next two weeks decides how this ends.

Step 1: The Demand Letter That Often Ends the Dispute

Before you file anything or call a collections agency, send a formal written demand letter. Courts expect it. Collections professionals expect it. And more often than you'd think — it works.

Your letter needs five things: the invoice number, the exact amount owed, the original due date, a 14-day payment deadline, and a plain statement that legal action follows if payment doesn't arrive. Send it by email and registered mail. Keep copies of both.

Clients who ghost informal follow-ups often pay the moment something official lands in their inbox. Invoice software that logs read receipts and payment activity gives you timestamped proof the client received and viewed the invoice — exactly the documentation a court needs if things escalate.

Small Claims Court Thresholds: What Your Province Allows

When the demand letter fails, small claims court is your most practical legal route. Filing fees run $75–$200 depending on province. No lawyer required. The limits below determine whether your amount qualifies.

If your debt exceeds even Alberta's $50,000 ceiling, you'll need to file in Superior Court (or its provincial equivalent), which typically means hiring a lawyer — factor that cost into whether pursuit makes financial sense.

One deadline freelancers miss constantly: in most provinces, the statute of limitations is 2 years from the date payment was due — not from your demand letter, not from when you stopped following up. The clock started the moment your invoice went unpaid. Don't wait.

CRA and Tax: The Question Nobody Wants to Ask

If you invoiced but never got paid, do you still owe GST/HST and income tax on that money? The honest answer depends on how you account.

Under accrual accounting — standard for most incorporated businesses — you likely reported that income the moment you issued the invoice. That said, some incorporated businesses can elect cash-basis reporting for GST/HST purposes specifically; if you're unsure which method applies to you, check with your accountant. Under cash accounting, common among sole proprietors and freelancers, income is only recorded when you actually receive payment — an unpaid invoice simply isn't taxable yet.

Consider a freelance UX designer in Toronto who invoiced a startup $8,400 in October, reported it on accrual, then watched the company fold in January. By documenting her collection attempts and formally writing off the bad debt, she recovered both the income tax and the GST she'd already remitted.

Collections Agency vs. Court vs. Walking Away

Not every unpaid invoice deserves the same fight. Here's a clear framework.

Collections agency: Right for debts under roughly $5,000, when your time and stress cost more than the pursuit. They chase the client in exchange for 25–40% of whatever they recover. You do nothing — but you keep less.

Small claims court: The smart move from $5,000 up to your province's ceiling. Strong documentation, a solvent client, and a filing fee under $200 — you keep 100% of any judgment you win.

Write it off: When the client is bankrupt, the company is dissolved, or the 2-year limitation window is closing with no realistic recovery. Document everything for your CRA bad debt claim and move forward.

The best protection against non-payment isn't a collections agency or a courtroom — it's never getting there in the first place.

Professional invoices with built-in payment links, automated reminders, and read-receipt tracking change client behaviour from the start. Clients pay faster when it's one click from the email to a payment screen. The paper trail you build automatically — viewed timestamps, reminder logs, full payment history — is precisely what a court or collections agency needs if things go sideways.

Frequently Asked Questions

How long do I have to sue a client for non-payment in Canada?

In most Canadian provinces, the statute of limitations on unpaid invoices is 2 years from the original due date. The clock doesn't reset when you send a demand letter — it started the day payment was first late.

Do I owe GST/HST on an invoice my client never paid?

Under accrual accounting, you may have already remitted GST/HST when you issued the invoice. Once you've made documented collection efforts and formally written off the debt, you can claim a GST/HST bad debt adjustment on a future return to recover what you already paid in.

Is a collections agency or small claims court better for unpaid invoices?

Under $5,000, a collections agency is often more practical — they handle the chase for 25–40% of what's recovered. Between $5,000 and your province's small claims ceiling (up to $50,000 in Alberta), small claims court costs less and lets you keep the full judgment. Above the small claims threshold, you're looking at Superior Court, which typically requires legal representation.

A non-paying client is frustrating. It is not a dead end. Demand letter, know your province's limit, protect your CRA position — then use invoicing tools that make it harder to avoid payment than to simply click and pay.