Emailed invoices often sit unread. On WhatsApp, the customer sees the bill within minutes, can download it, and can ask a question right away. Here is a simple way to send invoices on WhatsApp that looks professional and gets you paid faster.
What every invoice message should include
- The invoice number and date.
- The amount and due date.
- The invoice itself as a PDF.
- How to pay — a UPI ID or payment link.
- Your business name, so it is not mistaken for spam.
Message formats you can copy
Retail or online order:
"Hi Meena, thank you for shopping with Sharma Sarees! Your invoice #INV-1042 for ₹3,450 is attached. It has been paid in full. Keep it for warranty or exchange."
B2B with credit:
"Dear Gupta Traders, please find invoice #2026-318 for ₹48,600, dated 12 Oct. Payment is due by 27 Oct. Bank and UPI details are on the invoice. Thank you!"
Services:
"Hi Arjun, your invoice for the September website maintenance (₹2,000) is attached. Pay here: [link]. Let us know if you have any questions."
Tips for the PDF
- Name the file clearly: Invoice-1042-Sharma-Sarees.pdf.
- Keep it small so it opens quickly on any phone.
- For GST invoices, make sure your GSTIN, the customer's GSTIN (for B2B), HSN codes and tax breakup are shown.
Polite payment reminders
Send one reminder on the due date and, if needed, one a week later:
"Gentle reminder: invoice #2026-318 for ₹48,600 was due today. If already paid, please ignore this message. Thank you!"
Avoid threatening language. A friendly tone gets paid faster and keeps the relationship.
When you send many invoices
Sending each invoice by hand from your phone works for a few customers. For dozens a day, the WhatsApp Business API helps. An invoice or payment reminder is usually a utility template, and you can attach the PDF as template media. The whole team sends from one business number, and replies about bills come into one shared inbox.
On our Growth and Pro plans, you can also send a template to a single customer straight from the inbox, which is handy for one-off reminders. See our WhatsApp Business API plans or read payment reminder message formats.
General information. Check GST invoice rules with your accountant.
FAQs
Can I send a GST invoice on WhatsApp?
Yes. Send it as a PDF with the invoice number, amount and due date in the message. Make sure the invoice itself shows all required GST details.
What should an invoice message on WhatsApp say?
The invoice number and date, amount, due date, how to pay, and your business name, with the PDF attached.
How do I remind customers about unpaid invoices?
Send one polite reminder on the due date and one a week later if needed, without threatening language.
Can I send invoices from the WhatsApp Business API?
Yes. Invoices and payment reminders are usually utility templates, and the PDF can be attached as template media.
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