How to Follow Up on an Unpaid Invoice (Email Script)

An unpaid invoice is usually a process problem, not a personality problem. Follow up on a schedule, keep every email short, and always ask for one concrete next step: a payment date or a blocker you can fix.

Free template

Replace every [bracket] before sending.

Hi [Client Name],

Invoice [Invoice #] for [Amount] ([Project / Deliverable]) was due on [Due Date]. I have not recorded payment yet.

Could you reply with the date payment will go out, or tell me if anything is blocking it on your side? I can resend the invoice or update details the same day.

Pay here: [Payment Link]

Thanks,
[Your Name]
[Your Business]

A simple sequence

1. Day after due: Soft check-in. Assume good intent.
2. ~7 days late: Restate amount, invoice number, and payment link. Ask for a date.
3. ~14–30 days: Firmer ask; copy accounts payable if you have it.
4. 60+ days: Document prior reminders and name one next step you will actually take.

What every follow-up needs

• Invoice number, amount, original due date, and how many days past due.
• Payment link or attachment again.
• One clear ask ("reply with the payment date").
• An offer to fix blockers (wrong PO, missing W-9, wrong amount).

Free mini-pack: 3 more follow-up templates (HTML + PDF), no signup.

Related guides

• Past-due invoice payment reminder
• Friendly payment reminder after the due date
• Invoice 30 days overdue email
• Second payment reminder email
• Client not responding to invoice

Practical communication guidance only, not legal advice. Payment terms, late fees, and collection options depend on your contract and jurisdiction.