Use when a friendly reminder went unanswered and the invoice is now 14-30 days overdue. The tone shifts from "just checking in" to "I need a response" — you're no longer assuming good faith, but you're not making accusations either. Clear, direct, and professional.
Subject
Follow-up on overdue invoice [#]
Body
Hi [Client Name],
I’m following up again on invoice [#] for [project or deliverable], which is now overdue.
Please arrange payment by [new date]. You can use the payment details below:
If there is an issue on your side, reply today so we can resolve it quickly. Otherwise, I’ll assume payment is being processed.
Thanks, [Your Name]
If you're already at the firm-reminder stage, the underlying problem is that you delivered the files before payment. FileDue inverts that.
Stop chasing invoices →Payment
Use when an invoice is due or only slightly overdue and you want to keep the tone warm.
Payment
Use when earlier reminders failed and you need to warn about next steps if payment does not arrive.
Follow-Up
Use when a client stops replying and you need a final check-in before closing the loop.