The verdict in three sentences
An SME that leaves 40% of its revenue in receivables over 60 days is financing its customers for free and borrowing to pay its suppliers. A custom collection automation at 15,000 to 35,000 SGD (about 10,500-24,500 EUR) reminds each customer at the right time by email, SMS and WhatsApp, with a built-in payment link. A realistic target is a DSO cut of 20 days within 3 to 6 months, without hiring a collector.
Why manual chasing fails
In a business supplies SME, the owner or the accountant chases when time allows, mostly by phone, rarely in writing, with no shared history. Large accounts pay at 90 days because nobody reminds them at day 30. Small customers simply forget. The result: late payments concentrated on 20% of customers who hold 70% of outstanding balances.
| Observed practice (2026 estimate) | Manual chasing | Automated chasing |
|---|---|---|
| First reminder after due date | 15 to 30 days | Day 1, or day -5 as a courtesy reminder |
| Channels used | Mostly phone | Email, SMS, WhatsApp by customer profile |
| Customers chased per month | 30 to 60 out of 280 | 100% of overdue customers |
| Traceability | Notebook or memory | Full history per customer |
| Immediate payment possible | No, bank transfer later | PayNow QR, card or bank transfer link |
| Time spent per month | 25 to 40 hours | 4 to 8 hours (disputed cases only) |
What a custom automation includes
The core is a configurable reminder sequence per customer segment: a polite reminder 5 days before the due date, an SMS at day 3, an email with the invoice at day 10, a WhatsApp message at day 20, then an alert to the account manager and owner at day 30. Each message carries a payment link for immediate settlement by PayNow, card or bank transfer.
| Module | Content | Included in the range |
|---|---|---|
| Invoice import | Nightly from accounting software (Xero, QuickBooks, other) | Yes |
| Reminder sequences | 3 to 5 sequences per segment (key accounts, SMEs, government) | Yes |
| Channels | Email, SMS, WhatsApp Business | Yes (message costs extra) |
| Payment link | PayNow, card and transfer, automatic reconciliation | Yes |
| Overdue dashboard | Balance per customer, ageing bucket, account manager | Yes |
| Promises to pay | Logged, with automatic follow-up if missed | Yes |
| Monthly support | 300 to 1,200 SGD depending on level | Optional |
Delivery takes about 6 weeks. Running costs stay modest: around 0.03 to 0.08 SGD per local SMS, WhatsApp Business messages billed per conversation, and 1 to 3% fees on card payments collected.
Mini case study
Rachel, managing director of an office supplies SME in Singapore (illustrative example), turns over 6,000,000 SGD a year with 280 customers. Her DSO is 95 days and 40% of revenue sits in receivables over 60 days. She funds the gap with an overdraft at 7% a year.
Calculation: 6,000,000 / 365 = about 16,440 SGD of sales per day. Cutting DSO by 20 days frees 16,440 × 20 = 328,800 SGD of cash. At 7% interest, finance costs drop by 23,016 SGD a year, before counting fewer bad debts. With a 25,000 SGD project and 600 SGD monthly support (7,200 SGD a year), the system pays back in about 16 months on interest alone, faster once bad debt reduction is included.
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FAQ
Won't automated reminders upset key accounts?
The sequence is tailored per segment: for key accounts, the first message goes out 5 days before the due date as a courtesy, and escalation goes through the account manager at day 30. Companies adopting this approach typically see 15 to 30% fewer late payments in the first quarter.
Do we need to change accounting software?
No, the system imports invoices nightly from your current tool (Xero, QuickBooks or a structured spreadsheet) and sends collected payments back for reconciliation.
How much do the messages cost?
For 280 customers and 4 reminders per overdue customer, allow 80 to 250 SGD a month for SMS and WhatsApp, a small amount compared with the sums recovered.
How long until go-live?
About 6 weeks: 1 week scoping sequences, 3 weeks of development, 2 weeks testing with a group of 30 customers before full activation.
Can we track promises to pay?
Yes, each promise is logged with its date; if payment does not arrive, a reminder goes out automatically the next day and the overdue dashboard flags it in red.
Let's scope your project. Tell us your number of customers, accounting software and preferred channels: we will price a collection automation, delivered in about 6 weeks. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.