Most late payments aren’t malicious — they’re just forgotten in a pile of other invoices. A well-timed follow-up recovers far more unpaid invoices than waiting and hoping, or escalating straight to a legal threat.
When to send each follow-up
- 3 days before due date: a friendly reminder, not a chase — just a heads-up the invoice is coming due.
- 1-3 days after due date: a polite check-in assuming it was simply missed.
- 10-14 days after due date: a firmer note referencing the original invoice number and amount, asking for a specific response.
- 30+ days after due date: a clear statement of next steps, including any late fee terms from your original agreement.
What to include every time
- The original invoice number and date, so there’s no ambiguity about what’s being referenced
- The exact amount due
- A direct link or attachment to re-send the invoice, since it’s often just misplaced
- One clear next step — pay by X date, or reply to discuss
Keep the tone professional, not accusatory
Even the firmer follow-ups work better assuming good faith rather than assuming the client is avoiding you. “Wanted to flag this in case it slipped through” gets better response rates than “This is now significantly overdue.” Generate a clean, professional invoice to attach to any follow-up with BizInvoiceGen.