The right tone for a payment reminder depends on how overdue the invoice is. Here are three examples for different stages.
Stage 1: A few days overdue (friendly)
'Hi [Name], hope you're doing well. Just a quick note — I noticed Invoice #[number] for $[amount] was due on [date] and may have slipped through. Let me know if you need anything from me to process it. Thanks!'
Stage 2: One to two weeks overdue (direct)
'Hi [Name], following up on Invoice #[number], which was due on [date] and is now [X] days overdue. Could you confirm when payment will be made? Happy to answer any questions on the invoice itself.'
Stage 3: Well past due (firm)
'Hi [Name], Invoice #[number] for $[amount] remains unpaid, now [X] days past the agreed due date of [date]. Please arrange payment by [new date]. If there's an issue with the invoice, let me know so we can resolve it promptly.'
General principles across all stages
- Always restate the invoice number, amount, and original due date.
- Reattach or re-link the invoice each time.
- Keep the tone professional, never accusatory, even at the firm stage.
- Give a specific next step or new deadline.
When to escalate beyond email
If a firm reminder gets no response after a reasonable window, a phone call or, for significant amounts, formal written notice referencing your contract terms is the appropriate next step.