Payment reminders that get paid: timing, channels and what to write

A payment reminder is a short message that tells a customer which bill is due, how much, by when, and how to pay. Reminders get results when they are timed around the due date, sent on a channel the customer reads, polite and specific, and stopped the moment the bill is paid. For businesses that sell on credit, such as distributors, wholesalers, manufacturers and service firms, a steady routine of reminders shortens the time money stays with customers.

Timing: before, on and after the due date

When	Purpose	Tone
3 to 5 days before the due date	Gives the customer time to arrange funds or approvals	Friendly heads-up
On the due date	A clear nudge on the day	Plain and factual
About 7 days after	The bill is now overdue	Polite but firm
15 to 30 days after	Escalation: a phone call, a statement, a pause on further credit	Firm and personal

Two details decide whether the timing works:

• The due date must be right. Record credit terms in your books, with bill-wise details and a credit period, so the due date is calculated rather than guessed.
• The send time should suit the reader. The owner of a medical shop reads messages before opening the shutter; a company’s accounts team reads email in office hours.

Choosing the channel

Channel	Strengths	Weaknesses	Cost in Auditer
WhatsApp	Read quickly; can carry a payment QR code	Needs a WhatsApp number and the customer’s consent	1 credit a message
Email	Suits accounts teams; leaves a formal record	Often unread by small shop owners	0.5 credit
SMS	Works on any phone	Short; text only	0.5 credit

For the most important step, often the due date, two channels work well: WhatsApp for the owner and email for the accounts team.

What to write

A reminder that gets paid has:

• the customer’s name and your business name;
• the invoice number and date;
• the amount due and the due date;
• an easy way to pay, such as your UPI ID or a QR code for the exact amount;
• a number to call with questions;
• a line such as “Please ignore this if you have already paid.”

A sample, sent before the due date:

Dear Sharma Medicals, this is a reminder from Shree Ganesh Pharma that invoice SGP/1245 dated 10 October 2026 for ₹48,600 is due on 9 November 2026. You can pay by UPI to [your UPI ID] or scan the QR code. For any query, call [your number]. Please ignore this if already paid.

Keep the tone plain and polite. Do not threaten, do not shame, and never post a customer’s dues in a group. If your business is a micro or small enterprise registered under Udyam, the MSMED Act requires buyers to pay you within the agreed period, and in any case within 45 days; a line about this on your invoices can help.

How often, and when to stop

• At most one message per bill per day, and four or five in all before a phone call takes over.
• Stop the moment the bill is paid. A reminder after payment annoys a customer more than no reminder at all.
• Remind only for the balance after a part payment.
• Pause for disputes. If a customer has raised a quality complaint, call instead of sending automatic messages.
• Skip small balances, such as ₹300 left after rounding, by setting a minimum amount.
• Send one statement instead of ten messages to a customer with many open bills.

Respecting DND and WhatsApp rules

• SMS: business SMS in India must use a registered sender ID and an approved template under TRAI’s rules (the DLT system). Numbers on the Do Not Disturb register block promotional messages, so keep reminders free of offers and advertising.
• WhatsApp: messages a business sends first must use templates approved under Meta’s WhatsApp Business rules, and customers should have agreed to hear from you on WhatsApp. Too many messages, or messages that customers block or report, can restrict your number.
• Any channel: if a customer asks you to stop, stop, and call instead.

A sample three-step schedule

A pharma distributor in Indore raises about 120 credit bills a month on 30-day terms:

Step	When	Channel	Message
1	3 days before the due date, 10:00 am	WhatsApp	Friendly heads-up with a UPI QR code
2	On the due date, 9:00 am	Email	Due today, with invoice details
3	7 days after the due date, 11:00 am	WhatsApp and SMS	Overdue; asks for a payment date

Suppose all 120 bills get step 1, 70 are still unpaid on the due date and 25 a week later. The messages cost 120 + 35 + 37.5 = 192.5 credits, about ₹193 plus GST for the month. The distributor sets a minimum outstanding of ₹2,000 to skip small balances, and puts two hospitals that pay on a fixed monthly cycle on the skip list. After a month, the reminder history shows which step brings in the most payments.

For more ways to spot money stuck with customers, read five places money hides in your books.

How Auditer helps

Auditer sends reminders from the outstanding bills synced from TallyPrime, using up to 6 rules set before, on or after the due date, each with its own send time, channels (WhatsApp, email or SMS) and parties to skip, plus a minimum outstanding below which no reminder goes. Each reminder carries the invoice number and date, the amount and the due date, plus your UPI ID if you have set one in Voucher Configuration, and WhatsApp reminders can also carry a QR code for the exact amount. Reminders for a bill stop as soon as a receipt is recorded or the sync shows it paid, and the reminder history lists every message sent, failed or stopped. The feature is free; each message costs 1 credit by WhatsApp or 0.5 by email or SMS. See Sales and collections.