When a client doesn't pay: a follow-up timeline that works

The worst way to chase an unpaid invoice is emotionally and at random. The best way is a boring, predictable schedule you decided on before you were annoyed. Here is a timeline that keeps pressure rising and the relationship intact.

Day −3: the pre-due nudge

A one-line heads-up before the due date. It feels like customer service, not chasing — and it flushes out the invoices that never reached the right inbox, which is the single most common cause of "late" payment.

Day 0: due-date note

Short and neutral: the invoice falls due today, details attached. No apology, no pressure. You are building a paper trail of professionalism.

Day 7: first real reminder

Now you ask for a specific payment date, not just payment. "Could you confirm when this will be processed?" A date is a commitment you can reference next week; "soon" is not.

Day 14–21: escalate the channel, not the tone

Same polite content, different route: phone the client, or copy the person who commissioned the work if accounts is stonewalling. Most stuck invoices are stuck at a person, and finding that person beats writing a sterner email to the wrong one.

Day 30: consequences, stated plainly

Pause ongoing work, withhold deliverables not yet handed over, or apply the late fee your terms specify. Only name consequences you will actually enforce — an empty threat spends credibility you will want later.

Day 45+: final notice, then decide

One final email with a hard date, then choose deliberately: small claims or legal notice, a collections route, or writing it off and never working with them again. All three are legitimate business decisions; drifting is not.

Prevention: the terms that make chasing rare

The timeline above is damage control; most of the damage is avoidable at agreement time. A deposit before work starts filters out the clients who were never going to pay. Milestone billing caps your exposure to one instalment instead of a whole project. A late-fee clause stated on the invoice gives Day 30 its teeth. And writing the actual due date on the invoice — not just "Net 30" — removes the arithmetic excuse. None of these help the invoice that is already overdue, which is exactly why they belong in your standard terms today.

Templates and automation

Copy-paste wording for each stage is in the reminder templates guide. And the first three stages — before due, on due, after due — are exactly what BillSlip's paid plan sends automatically, logged and at-most-once, so the schedule runs even when you are busy doing the next project.