Past-Due Invoice Email: A Payment Reminder That Gets a Reply

The due date came and went. You want the money, you want to keep the client, and you do not want to sound like a collections agency. Here is a timing plan for past-due reminders and a free template for the first one.

Before you send anything

• Confirm the invoice actually went to the right person (and to accounts payable, if the client has one).
• Check your contract for payment terms, late fees, and any right to pause work. Only mention what is actually in it.
• Have the invoice PDF and a payment link or remittance details ready so the client can act in one step.

A timing plan for late invoices

1. 1–3 days late: friendly reminder. Assume it slipped. Ask for a payment date.
2. About 7 days late: restate the amount, the work delivered, and the original due date. Ask if anything is blocking payment.
3. About 14 days late: give a specific date you need payment by, and mention any late fee or work pause your contract allows.
4. 30+ days late: a calm final notice that lists your prior reminders by date and states your next step.

These intervals are a starting point, not a rule. Net-30 and net-60 clients, or ones with monthly AP runs, may need a different rhythm. What matters is that each email asks for something specific and that you keep a record of what you sent and when.

Free template: first past-due reminder

Replace every [bracket] before sending.

Hi [Client Name],

A quick reminder that invoice [Invoice #] for [Amount] was due on [Due Date]. I've attached it again here, and you can pay at [Payment Link / Remittance Details].

Could you let me know when it's scheduled to go out? If anything on the invoice needs correcting, just tell me and I'll send a revised copy today.

Thanks,
[Your Name]
[Your Business]

The subject line states the fact plainly, which makes it easy to find later. The body gives the client everything they need to pay and one easy question to answer.

Firm without threats

• Put dates in writing. "Payment by [Date]" is clearer than "as soon as possible."
• Mention late fees or a work pause only if your agreement includes them.
• Do not threaten legal action, credit reporting, or public reviews in an email. If it gets to that point, look up the options that actually apply where you and the client are, such as small claims court.
• Keep the tone the same in every message. Only the specificity should increase.

If the client replies with a problem

Sometimes the late payment is about a dispute, a missing purchase order, or a cash-flow crunch. If they raise an issue, answer it directly and propose a fix: a corrected invoice, a short call, or a split payment with dates. Getting a firm plan in writing is usually worth more than winning the argument.

Related guides

• Invoice follow-up email templates: the full soft-nudge-to-final-notice sequence
• How to ask a client for payment politely: wording for the first ask, before anything is late
• Friendly payment reminder after the due date: short, warm reminders for the first week late
• Final notice before collections email: a calm, documented last notice for long-overdue invoices
• Proposal follow-up emails: for proposals that go quiet before any work starts
• Follow-up email after sending a quote or estimate: for smaller quotes and estimates awaiting a yes
• Client not responding to invoice: what to email when you get radio silence

More free guides

• Invoice 30 days overdue email
• Second payment reminder email
• Payment reminder subject lines
• Free 3-template mini-pack (PDF)
• All free guides

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