Payment Reminder Messages for WhatsApp and Email (Polite to Firm)

By Alphabet Technology · · 5 min read
Quick answer

Send a friendly reminder 3 days before the due date, a short note on the due date, a firmer reminder 7 days after with the invoice attached, and a final notice at 15–30 days that states the next step. Always mention the invoice number, amount and a one-tap way to pay (UPI ID or bank details).

3 days before the due date

“Hi Ravi, a quick reminder that invoice INV/2026-27/045 for ₹48,000 is due on 15 October. UPI: business@bank. Thank you!”

On the due date

“Hi Ravi, invoice INV/2026-27/045 (₹48,000) is due today. Sharing it again for your convenience. Please let me know once it's done.”

7 days overdue

“Hi Ravi, invoice INV/2026-27/045 for ₹48,000 is now 7 days overdue. Could you share an expected payment date? Bank details are on the invoice.”

Final notice (15–30 days)

“Dear Ravi, despite earlier reminders, ₹48,000 against INV/2026-27/045 is still outstanding. Please clear it by 30 October. After that we will have to pause further work and add interest as per our terms.”

Tips that work

  • Put payment terms and late-fee terms on the quotation, not only the invoice.
  • Use staged payments for large projects.
  • Send the reminder on WhatsApp – it's read faster than email.
  • Thank the client the moment payment arrives.

Reminders in Invoice24

The dashboard lists overdue invoices; send a reminder on WhatsApp or email in one tap, and download client statements to share the full balance.

Frequently asked questions

Can I charge interest on late payments?

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Yes, if it is in your agreed terms. Registered MSMEs also have protection under the MSMED Act for payments delayed beyond the agreed period (maximum 45 days).

When should I send the first reminder?

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A few days before the due date – it catches invoices that are stuck in approval.

Make your next quotation in Invoice24

GST invoices, quotations with client approval and branded letterheads – private, offline-ready and free.

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