Payments, cash flow and bookkeeping
How to Write a Polite Payment Reminder (With Templates for Every Stage)
Ready-to-use payment reminder messages for before the due date, on the day, after it and a final notice, in email and WhatsApp formats for India.
Quick answer
A good payment reminder is short, specific and polite: name the invoice number, amount and due date, attach the invoice, make paying easy and ask for a payment date. Send a gentle note before the due date, a direct one on the day, firmer ones after, and a final notice before you pause work.
The reminder sequence
- 3 days before the due date: a friendly heads-up.
- On the due date: a simple reminder.
- 7 days overdue: a firm reminder.
- 15 days overdue: escalation to a senior contact.
- 30 days overdue: a final notice with next steps.
Templates
Change the names, invoice number, amount and dates, and keep the rest.
1. Before the due date (email)
Subject: Invoice INV-0042 due on Friday, 14 November
Hi Rahul, just a quick note that invoice INV-0042 for ₹47,200 is due this Friday, 14 November. I have attached it again for convenience. Bank and UPI details are on the invoice. Thanks!
2. On the due date (WhatsApp)
Hi Rahul, invoice INV-0042 for ₹47,200 is due today. Could you let me know when it is scheduled for payment? Thank you.
3. Seven days overdue (email)
Subject: Overdue: invoice INV-0042, ₹47,200
Hi Rahul, invoice INV-0042 for ₹47,200 was due on 14 November and is now 7 days overdue. Could you please confirm a payment date this week? If there is any issue with the invoice, let me know and I will sort it out quickly.
4. Fifteen days overdue (escalation)
Subject: Payment pending for INV-0042, request for help
Hi Neha (cc Rahul), I am writing about invoice INV-0042 for ₹47,200, which is now 15 days overdue. I have attached the invoice and the approval email from 10 November. Could you help us get this processed? As per our agreement, further work will be scheduled once this is cleared.
5. Final notice (30 days overdue)
Subject: Final notice: invoice INV-0042, ₹47,200
Hi Neha, despite earlier reminders, invoice INV-0042 for ₹47,200 remains unpaid 30 days after its due date. Please arrange payment by 21 December. If we do not receive payment or a confirmed plan by then, we will pause all work and apply late payment interest as per our terms. We would prefer to resolve this together, so please call me if that helps.
Tips that make reminders work
- Always attach the invoice and mention its number and amount.
- Ask a question (“when is it scheduled?”) so the reply has a purpose.
- Keep emotion out, even when you are frustrated.
- Record each reminder in your tracker; see how to track outstanding customer payments.
- Pick up the phone when emails go unanswered after the second reminder.
The first message matters too. See how to send an invoice to a client professionally.
Common mistakes
- Waiting weeks before the first reminder.
- Apologising for asking to be paid.
- Threatening consequences you will not follow through on.
- Sending a reminder for an invoice that was already paid. Check first.
Frequently asked questions
Is WhatsApp acceptable for payment reminders?
Yes, for clients you already talk to on WhatsApp. Keep an email trail for larger or corporate clients, whose accounts teams work from email.
Should I mention late fees in reminders?
Only if they were agreed in advance, and usually from the third reminder onward.
What if the client says the invoice is wrong?
Fix it quickly with a credit note or a corrected invoice, then restart the clock; see 15 common invoice mistakes.
How do I remind a client without damaging the relationship?
Stay factual, assume good intent in the first two reminders, and offer to help with anything blocking the payment. Firmness comes from consistency, not tone.
Next step
Save these five templates where you can find them, and send the first one three days before your next due date. PikZiy Books shows which invoices are due and overdue, so you always know who needs which reminder.
Last reviewed: 22 October 2026. Figures in the examples are illustrative.
