How to ask a customer for overdue payment politely (with WhatsApp templates)

The four principles behind every good reminder

Most overdue invoices are not fraud. They are the result of a busy owner, a cash crunch or an invoice stuck with the wrong person. A good reminder respects that and still gets you paid.

1. Be specific. Business name, invoice number, amount, due date. A vague "please clear dues" is easy to ignore.
2. Make paying effortless. Include a UPI payment link in every message. One tap beats "send me your bank details".
3. Ask for a date, not a promise. "Can you confirm a payment date?" gets a far more useful answer than "please pay soon".
4. Stay respectful. The customer is a relationship, not a target. Firm is fine; threatening or shaming is not.

Timing and frequency rules

• Send messages only between 08:00 and 19:00, Monday to Saturday where possible. This window is modelled on the Reserve Bank of India's rule for lenders' recovery agents (RBI circular dated 12 August 2022). That rule binds RBI-regulated lenders, not private suppliers, but it is good practice and buyers recognise it as fair.
• One WhatsApp message per customer per day at most. More than that feels like harassment, even if each message is polite.
• Avoid festival days and the first hour of a working day when shops are opening.
• If the customer asks you to stop messaging or to use email instead, honour it and switch channels.

Replace the placeholders in square brackets before sending: [Customer name], [Your business], [Invoice no.], [Amount], [Date] and [UPI link].

1. Before the due date

English

Namaste [Customer name], this is [Your business]. A friendly heads-up that invoice [Invoice no.] for ₹[Amount] is due on [Date]. You can pay here: [UPI link]. Thank you for your business!

Hindi

नमस्ते [Customer name] जी, [Your business] की ओर से। आपका बिल [Invoice no.] ₹[Amount] की तारीख [Date] को देय है। भुगतान के लिए लिंक: [UPI link]। धन्यवाद!

2. On the due date (Day 0)

English

Hello [Customer name], [Your business] here. Invoice [Invoice no.] for ₹[Amount] is due today. Invoice attached for your reference. Pay in one tap: [UPI link]. Please ignore if already paid.

Hindi

नमस्ते [Customer name] जी, [Your business] से। बिल [Invoice no.] ₹[Amount] का भुगतान आज देय है। बिल साथ में भेजा है। भुगतान लिंक: [UPI link]। अगर भुगतान हो गया है तो कृपया इस संदेश को नज़रअंदाज़ करें।

3. Day 3, asking for a promise date

This is the most important message. You are not asking whether they will pay; you are asking when.

English

Hi [Customer name], [Your business] here. Invoice [Invoice no.] for ₹[Amount] is now 3 days overdue. We understand things get busy. Could you share the date by which you can make the payment? Link: [UPI link]

Hindi

नमस्ते [Customer name] जी, [Your business] से। बिल [Invoice no.] ₹[Amount] तीन दिन से बकाया है। हम समझते हैं कि काम में व्यस्तता रहती है। कृपया बताएं कि आप किस तारीख तक भुगतान कर पाएंगे? लिंक: [UPI link]

Write the promised date down the moment you get it. Our glossary explains why a promise to pay is worth tracking.

4. After a broken promise

Stay calm and factual. Remind them of their own date, not your frustration.

English

Hello [Customer name], [Your business] here. As discussed, payment of ₹[Amount] for invoice [Invoice no.] was planned for [Promised date]. We have not received it yet. Could you please pay today or let us know a new firm date? [UPI link]

Hindi

नमस्ते [Customer name] जी, [Your business] से। बातचीत के अनुसार बिल [Invoice no.] का ₹[Amount] भुगतान [Promised date] तक होना था, जो अभी तक नहीं मिला है। कृपया आज भुगतान करें या नई पक्की तारीख बताएं। [UPI link]

5. After a part payment

Always say thank you. A customer who feels appreciated for paying something is more likely to clear the rest.

English

Thank you, [Customer name]! [Your business] has received ₹[Paid amount] against invoice [Invoice no.]. The balance is ₹[Balance]. Could you confirm when the remaining amount will be paid? [UPI link]

Hindi

धन्यवाद [Customer name] जी! [Your business] को बिल [Invoice no.] के लिए ₹[Paid amount] मिल गए हैं। बाकी राशि ₹[Balance] है। कृपया बताएं कि शेष भुगतान कब तक होगा? [UPI link]

6. Final reminder before a formal letter

This is the last informal message. It is firm, gives a clear deadline and explains the next step without threatening.

English

Dear [Customer name], this is [Your business]. Invoice [Invoice no.] for ₹[Amount] has been overdue since [Due date] despite our reminders. We value our relationship and would like to settle this amicably. Please pay by [Deadline] using [UPI link] or call us to discuss. Otherwise, we will send a formal demand letter.

Hindi

आदरणीय [Customer name] जी, [Your business] की ओर से। बिल [Invoice no.] ₹[Amount] हमारे कई अनुरोधों के बावजूद [Due date] से बकाया है। हम आपके साथ अच्छे संबंध बनाए रखना चाहते हैं। कृपया [Deadline] तक [UPI link] से भुगतान करें या बात करने के लिए कॉल करें। अन्यथा हमें औपचारिक मांग पत्र भेजना पड़ेगा।

If you do get to that point, our guide on legal notice vs demand letter explains what to send, and the demand letter generator drafts one for you.

What never to write

A good rule of thumb: if you would be uncomfortable seeing your message read aloud in front of a judge or the customer's family, rewrite it.

When to stop messaging and pick up the phone

If three messages have gone unanswered, more text rarely helps. A short, polite call during business hours often uncovers the real issue: a disputed item, a missing GST detail, or a cash crunch you can solve with a part-payment plan. For distributors handling dozens of buyers, see how we approach this on the for distributors page.

Udhaar Wapas runs this whole sequence for each overdue invoice, with a promise-date picker in the Day 3 message and a human caller on Day 7, while respecting the same timing rules. See how it works.