Your client hasn’t paid. Here’s what actually works.
Most overdue invoices are not refusals — they are admin failures. The sequence below assumes that at first and escalates only as the evidence changes. Copy the emails, adjust the names, send them.
The single most important thing: chase on day one, not day seven. A reminder the day after the due date is neutral and costs you nothing socially. Waiting a week teaches the client the deadline was decorative — and that lesson applies to every invoice you send them afterwards.
The escalation sequence
Day 1–3 overdue Assume it slipped through
No accusation, no apology, no emotion. You are flagging an administrative fact. Most invoices are paid at this stage.
Subject: INV-2026-014 — due Friday
Hi Dana,
Quick flag that INV-2026-014 ($2,700) came due on Friday 21 Aug. Copy attached in case it got lost in a queue somewhere.
If it is already scheduled, ignore me and apologies for the noise.
Thanks,
Sam
Why it works: it gives the client a face-saving exit. Nobody has to admit fault, so nobody gets defensive, and the invoice moves.
Day 7 overdue Direct, still warm
Now you ask for a specific commitment. Vague replies like “I’ll look into it’” are how invoices drift for months, so make the ask a date.
Subject: INV-2026-014 — payment date?
Hi Dana,
INV-2026-014 ($2,700) is now a week past due. Could you let me know the date it is scheduled for?
If something is blocking it on your side — a PO number, a missing detail, the wrong contact — tell me what you need and I will send it today.
Thanks,
Sam
Why it works: “what do you need from me” removes every excuse while staying collaborative. And a named date creates a commitment you can reference later.
Day 14 overdue Firm, with consequences stated
Reference the agreed terms. Not a threat — a restatement of what both parties signed.
Subject: INV-2026-014 — now 14 days overdue
Hi Dana,
INV-2026-014 ($2,700) is 14 days overdue. Our agreement has payment at Net 14 with 1.5% monthly interest on overdue balances, which starts applying from today.
I have paused work on the remaining milestones until the account is current. Send confirmation of a payment date this week and I will pick straight back up.
Thanks,
Sam
Only pause work if your contract allows it. If it does not, say instead that you are unable to schedule further work until the account is current — true, and it does not breach anything.
Day 30+ overdue Final notice
Short, unemotional, and clear about what happens next. Many disputes settle at exactly this message, because it is the first one that sounds like a process rather than a person.
Subject: Final notice — INV-2026-014
Hi Dana,
INV-2026-014 ($2,700) is now 30 days overdue and previous reminders on 22 Aug, 28 Aug and 4 Sep have gone unanswered.
Please arrange payment by Friday 19 Sep. If I have not heard from you by then I will begin formal recovery of the debt.
I would much rather resolve this directly. If there is a problem with the invoice, tell me and I will work with you.
Sam
Only write this if you mean it. A threat you do not follow through on teaches the client that your deadlines are noise — which is the exact lesson you are trying to unteach.
If they still don’t pay
Small claims court is built for self-representation, has modest fees, and does not require a solicitor for typical freelance sums. For most freelance invoices it is cheaper and faster than the alternative.
Collections agencies typically take 25–50% of what they recover. Worth it only for larger sums you have written off mentally.
If you kept the copyright — and you should have — unpaid work cannot legally be used. A polite note pointing out that the licence has not transferred is remarkably effective, because a client using work they do not own has a bigger problem than an invoice.
Not legal advice, and thresholds differ by country. For large sums or anything that has turned genuinely hostile, get an hour of a solicitor’s time before acting.
How to stop it happening again
Take a deposit. 30–50% before work starts. A client who will not pay a deposit is showing you exactly how the final invoice will go.
Invoice against milestones, not at the end. Never let unbilled work accumulate past what you can afford to lose.
Net 14, not Net 30. Long terms mean financing your client’s business with your own cash. Net 45 or longer is a red flag worth negotiating before you sign.
Put a late fee in the contract. 1.5% per month. You may never charge it; its job is to make your invoice the one that gets paid first.
Transfer IP on payment, not on creation. The most expensive clause freelancers sign without reading. If rights pass as you work, a client who never pays still legally owns the result.
You can check any client contract for these in about thirty seconds with the free contract red-flag checker — it runs in your browser and nothing is uploaded.
Common questions
How long should I wait before chasing?
Day one. A neutral reminder the day after the due date costs nothing socially and resolves most late payments outright.
Should I charge late fees?
Put the clause in the contract even if you rarely enforce it. An invoice that costs money to ignore gets paid ahead of one that does not, and you can always waive it as a gesture.
Should I stop work?
Once an invoice is meaningfully overdue and your contract permits it, yes. Continuing to deliver while unpaid increases your exposure and confirms that deadlines carry no consequence.
What if they refuse outright?
Send a formal final notice first — many disputes end there. Then small claims for typical freelance amounts; collections only for sums large enough to justify losing 25–50%.
Write these without thinking about them
The follow-up-writer skill drafts every stage of this sequence from your actual invoice ledger — it knows what you sent, when, and what is still outstanding, so the escalation matches reality instead of your mood. It is free and MIT licensed.