The verdict in three sentences
For an SME invoicing more than 300 business customers, automated reminders are the fastest-paying digital investment: they cost 3,000,000 to 7,000,000 FCFA (about EUR 4,600 to 10,700) and often release 10 to 20 times that amount in cash. In Senegal and in many emerging markets, the channel that changes everything is WhatsApp, read within an hour by most owners and bookkeepers. The key to success is the link to accounting, so you never chase a customer who has already paid.
Why 75 days of credit cost so much
In distribution in Dakar, collections often rely on one person calling customers at month end from a manually updated Excel file. As a result, small invoices are never chased, large customers are chased too late, and your cash finances customer credit instead of the banks.
| Indicator (distribution SME, 1.2 billion FCFA revenue, 2026 order of magnitude) | Manual reminders | Automated reminders |
|---|---|---|
| Days sales outstanding (DSO) | 75 days | 45 to 55 days |
| Average receivables | about 247,000,000 FCFA | 148,000,000 to 181,000,000 FCFA |
| Cash released | 0 | 66,000,000 to 99,000,000 FCFA |
| Overdraft cost avoided (10% rate) | 0 | 6,600,000 to 9,900,000 FCFA a year |
| Invoices chased on time | 30 to 50% | 100% |
| Accounting team time on reminders | 60 to 80 h a month | 15 to 20 h a month |
| Bad debt write-offs | 1.5 to 3% of revenue | 0.5 to 1% of revenue |
What an automated dunning workflow includes
| Step | Trigger | Channel | Tone |
|---|---|---|---|
| Pre-due reminder | 5 days before due date | email + WhatsApp | courteous, invoice reminder and payment link |
| First reminder | 3 days after due date | WhatsApp + SMS | friendly, PDF copy of the invoice |
| Second reminder | day 15 | email + WhatsApp to the customer's accountant | firm, reminder of contractual penalties |
| Sales escalation | day 30 | alert to the sales rep and CFO | human call, payment plan offer |
| Formal notice | day 45 | letter + email | formal, litigation preparation |
| Delivery hold | day 60 | automatic ERP alert | management decision |
Each message includes a Wave, Orange Money or bank transfer payment link, which sharply shortens the gap between reminder and payment.
2026 budget in Dakar
| Item | Range (FCFA) |
|---|---|
| Connection to accounting software (Sage, Odoo, structured Excel) | 800,000 to 2,000,000 |
| Workflow engine and message templates | 1,000,000 to 2,000,000 |
| WhatsApp Business API and SMS integration | 500,000 to 1,200,000 |
| Aged receivables dashboard | 700,000 to 1,800,000 |
| Total project | 3,000,000 to 7,000,000 |
| Monthly costs (WhatsApp, SMS, hosting) | 80,000 to 200,000 a month |
| Time to go live | 6 to 10 weeks |
The aged receivables dashboard shows outstanding amounts in real time by bucket (0-30, 31-60, 61-90, over 90 days), by customer and by sales rep, so the CFO can steer collections weekly rather than at quarter end.
Mini case study
Mr Sarr, CFO of an electrical supplies distributor in Dakar, manages 800 business customers and 1.2 billion FCFA of annual revenue, with a 75-day average payment delay. He invests 5,200,000 FCFA in an email, SMS and WhatsApp reminder workflow linked to Sage, plus 150,000 FCFA a month to run (1,800,000 FCFA a year). After 6 months, DSO drops to 52 days: 23 days gained on about 3,290,000 FCFA of daily sales release 75,600,000 FCFA of cash. On a 10% overdraft, interest savings reach 7,560,000 FCFA a year, before counting lower bad debt. Including running costs, the project pays back in about 11 months from financing costs alone.
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FAQ
Won't customers resent WhatsApp reminders?
The first message goes out 5 days before the due date, in a service tone. In practice, 60 to 70% of customers pay after the pre-due reminder or the first reminder, with no human contact.
Do we need new accounting software?
No: the solution connects to Sage, Odoo or a structured Excel export. Only an unstructured file needs 300,000 to 600,000 FCFA of preliminary clean-up.
How much does a WhatsApp message cost?
Through the WhatsApp Business API, budget roughly 20 to 60 FCFA per message depending on category, or 40,000 to 100,000 FCFA a month for 800 customers.
Can payment plans be offered automatically?
Yes: beyond day 30, the system can offer 2 or 3 instalments approved by the CFO and track compliance.
How soon does cash improve?
First effects appear in the first month; DSO settles at its new level within 3 to 6 months.
Let's scope your project. Tell us your number of customers, accounting software and current payment delay, and we will price the reminder workflow, its indicative budget in FCFA and its go-live timeline. 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.
