Invoice 30 Days Overdue Email Template

Firm but warm

Clear escalation for invoices one month past due.

Example email

Subject: Invoice #INV-1090 — 30 days past due

Hi [Client],

Invoice #INV-1088 is now 30 days past due. Haven't seen it come through yet.

Can you give me a sense of when this one's getting processed? Happy to resend if it got buried.

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Open the generator with this tone pre-selected. Add your client details and get a personalized email in seconds.

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When to use this template

This template is designed for invoices that are 30 days overdue. It strikes a confident, professional tone that clearly communicates the delay without accusation or apology.

  • ✓Opens with the invoice number or project name — not “I” or “I'm following up”
  • ✓Asks one specific question that demands a concrete answer
  • ✓Ends on a forward-moving note, not a passive sign-off

Template variations

Here's how this template adapts to different amounts and situations.

$500

small project, new client, first reminder

$2,500

medium project, repeat client, second follow-up

$8,000

large project, long-term client, final notice

Use our free generator to create the exact version for your situation.

Frequently asked questions

When should I use this template?
Clear escalation for invoices one month past due. This template works best for invoices that are 30 days overdue. It's designed to be direct about the delay without damaging the relationship.
Can I customize this email for my specific situation?
Yes. Click "Customize this template" below to open our free generator with the firm but warm tone pre-selected. Add your client's name, invoice amount, and any context about the situation — the AI will rewrite the email to match perfectly.
How many times should I follow up on an unpaid invoice?
A standard escalation sequence has three steps: (1) a gentle reminder 1-3 days after the due date, (2) a firm follow-up 7-14 days later, and (3) a final notice at 21-30 days with clear consequences. After that, you may need to pause work or escalate to formal collections.