5 Late Payment Reminder Email Templates (Polite to Firm)

Template 1: The Gentle Nudge (1-3 days overdue)

Subject: Quick check-in on invoice #INV-0001
Hi [Name],

Hope you're well! Just floating invoice #INV-0001 ($X, due [date]) back to the top of your inbox in case it slipped through. Let me know if you need anything from my side to process it.

Thanks,
[Your name]

Template 2: The Direct Reminder (7-14 days overdue)

Subject: Reminder: invoice #INV-0001 now overdue
Hi [Name],

Following up on invoice #INV-0001 for $X, which was due on [date]. Could you confirm when I can expect payment? Happy to resend the invoice or provide any details your accounts team needs.

Best,
[Your name]

Template 3: The Firm Notice (30 days overdue)

Subject: Overdue invoice #INV-0001 — payment required
Hi [Name],

Invoice #INV-0001 ($X) is now 30 days overdue. Per our agreed terms, a 1.5% monthly late fee now applies. Please arrange payment this week to avoid further charges.

Regards,
[Your name]

Template 4: The Final Notice (60+ days)

Subject: Final notice: invoice #INV-0001
Hi [Name],

Despite previous reminders, invoice #INV-0001 ($X plus $Y in late fees) remains unpaid after 60 days. If payment isn't received within 7 days, I'll be referring this to collections. I'd strongly prefer to resolve it directly.

[Your name]

Template 5: The Upfront Terms Email (prevention)

Subject: Payment terms for [project]
Hi [Name],

Before we kick off — my standard terms are Net 14 from invoice date, with a 1.5% monthly late fee on overdue balances. Invoices go out on delivery. Let me know if your accounts team needs anything specific (PO numbers, vendor forms) and I'll include it.

Thanks,
[Your name]

Rules That Make These Work

Always reference the exact invoice number and amount. Keep every email professional — you may need them as evidence. And escalate on schedule: kindness first, firmness on time, every time.