← All templates
Day 15Firm
The Firm Reminder
Firm but professional overdue invoice template for 15 days late. States the facts, re-attaches the invoice, and demands a concrete payment date.
The template
Subject: Invoice #{invoice_number} — 15 days overdue
Hi {client_name}, Invoice #{invoice_number} for {amount} is now 15 days past due. I've attached a fresh copy in case the original got lost. Please let me know today when I can expect payment. If there's an issue on your end, I'm happy to hear it — but I do need a concrete date. Thanks, {your_name}
Replace the {curly} bits with your details. That's it.
When to use it
- Two weeks overdue
- The client has gone quiet after earlier nudges
- You still want the relationship, but need movement
Pro tips
- →Say the number plainly: "15 days overdue." Facts aren't rude
- →Re-attach the invoice — it removes the "I can't find it" excuse
- →Drop the exclamation marks. Calm and factual reads as serious
- →"Tell me the problem, or give me a date" gives them two doors, both useful
Or let InvoiceRelief send it for you
This template — and the four that escalate after it — send automatically on a schedule, by email and WhatsApp.
Send my first reminder