Payment Reminder Savings Calculator

Enter your invoices and payment days to see what faster payments are worth — and what WhatsApp reminders cost.

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Example numbers are filled in — change every box to your own.

Invoices per monthAverage invoice amount₹Days customers take to pay nowdaysCheck your receivables ageing report.Days sooner you expect with remindersdaysYour own estimate — try a few values.Your cost of money (interest)% / yearYour overdraft or loan rate.Reminders per invoicee.g. before due, on due date, after.

Sales on credit per month₹50,00,000

Money waiting to be collected now (about)₹75,00,000

Cash you get earlier if customers pay 5 days sooner₹8,33,333

Yearly interest saved on that cash (at 12%)₹1,00,000

WhatsApp reminder cost per year (7,200 utility messages × ₹0.115)₹828

Interest saved minus WhatsApp cost, per year

₹99,172

Plus the cash itself (₹8,33,333) arrives earlier, and your team may need fewer follow-up calls.

A planning estimate from your own numbers, not a promise — how much sooner customers pay depends on your customers. Meta fee only (India, excl. GST); your Lead Pattern plan is separate. Meta rates last checked on 7 November 2026 (Meta's India rate card effective 1 October 2026).

How it works

Work out your savings in 3 steps

Enter your numbers

Invoices per month, average amount, how many days customers take to pay, and your interest rate.

Guess the days saved

How many days sooner you think customers pay with WhatsApp reminders — try 2, 5 and 10 to see the range.

Read the result

Cash that comes in earlier, the interest that saves, and what the reminder messages cost.

How the numbers are worked out

Cash freed = (invoices × average amount ÷ 30) × days sooner
Interest saved per year = cash freed × your interest rate
WhatsApp cost per year = invoices × reminders per invoice × 12 × Meta's utility rate (₹0.115)

Every number except Meta's rate is yours, so the result is only as good as your guess of the days saved.

Send the reminders automatically

Payment reminders on WhatsApp can go out from Tally or SAP Business One, with the invoice number and amount filled in.

Payment reminder calculator FAQ

Will WhatsApp reminders really get me paid sooner?+

That depends on your customers, so the calculator lets you enter your own estimate instead of promising a number.

Which category are payment reminders?+

Utility — they're about an existing invoice. About ₹0.115 per message in India (excl. GST).

Does the result include Lead Pattern's plan fee?+

No. It shows Meta's message fee only. Plans are on the pricing page.

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Payment Reminder Savings Calculator

Work out your savings in 3 steps

Enter your numbers

Guess the days saved

Read the result

How the numbers are worked out

Send the reminders automatically

Payment reminder calculator FAQ

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