Payment reminder emails for a past due invoice, with templates
Key takeaways
Three emails cover most late invoices: before due, 7 days late, 30 days late.
Put the pay link in every email. Friction is the most common reason invoices sit.
The final notice should name a date and a next step, and you should mean it.
If the final notice is ignored, the next step is a formal demand letter.
When to send each reminder
Timing matters more than wording. A reminder that lands the week the client is paying bills gets paid. One that lands a month later competes with newer invoices.
| When | Tone | |
|---|---|---|
| 3 days before due | Heads-up with the pay link | Friendly, assumes they will pay |
| 7 days after due | Reminder with the invoice attached | Polite and direct |
| 30 days after due | Final notice with a pay-by date | Firm, names the next step |
Template 1: before the due date
Subject: Invoice #1047 due Friday, March 14
Hi Dana, a quick heads-up that invoice #1047 for $2,400 is due this Friday, March 14. You can pay here: [pay link]. Thanks again for the work on the Cedar Bend job. Sam
Template 2: a week late
Subject: Invoice #1047 is now 7 days past due
Hi Dana, invoice #1047 for $2,400 was due on March 14 and is now a week past due. I have attached it again. If something is holding it up, reply and tell me what you need from me. Otherwise you can pay here: [pay link]. Sam
Template 3: final notice at 30 days
Subject: Final notice: invoice #1047, $2,400, 30 days past due
Dana, invoice #1047 for $2,400 is now 30 days past due. Please pay by April 21. If it is not paid by then, I will send a formal demand and file in small claims court for the amount plus court costs. Pay link: [pay link]. Sam
What makes reminders work
- The exact amount and invoice number in the subject line, so it is searchable in their inbox.
- One pay link. Not three payment options and an address.
- A reply-to that a person reads. Some invoices are late because of a question nobody asked.
- No apology for asking. You did the work.
Questions, answered
How do you politely ask for an overdue payment?
Name the invoice number, the amount and the due date, attach the invoice, include a pay link and ask if anything is holding it up. A short, specific email reads as polite. Long explanations or apologies make it easier for the client to put it off.
How many reminders should I send before taking action?
Two or three is common: one before the due date, one about a week after, and a final notice at around 30 days with a pay-by date. After the final notice, a formal demand letter is the usual next step before filing a claim.
Should I charge a late fee in my reminder?
Only if your contract or invoice terms set one, or your state allows it. Quote the clause and show the math. Adding a fee you never agreed to can start an argument that delays payment.
What do I do if the client ignores the final notice?
Send a formal demand letter with a firm deadline, usually 10 to 14 days, by email and certified mail. If that is ignored too, you can file in small claims court for the amount owed plus court costs.
Practicing barrister and founder of QuickAds. Built Easy Small Claims so small businesses can recover invoices they would otherwise write off.