Overdue Invoice Reminder Automation for SMEs: 2026 Cost

The verdict in three sentences

With 90 days of average customer payment time, a Dakar SME funds its customers' business at the cost of its own bank overdraft. A system of automatic reminders by email, SMS and WhatsApp, with a Wave or card payment link in every message, costs 1,500,000 to 4,000,000 FCFA (about EUR 2,300 to 6,100) and brings that delay down by 20 to 30 days within a few months. The project is delivered in 5 weeks and often pays back in the first quarter from lower financing costs alone.

Why manual reminders fail

In most Senegalese SMEs, collection depends on one person who calls when they have time, often after 60 days, with no shared history. The customer forgets, the invoice gets lost at the accountant's, or nobody knows who must approve it. An automated sequence fixes three things: consistency (every invoice is chased on a fixed schedule), the right channel (WhatsApp is read over 90% of the time in Senegal, email far less), and ease of payment (a Wave link paid in 30 seconds from the owner's phone).

Price and running costs in Dakar in 2026

Budget depends on the number of invoicing sources (accounting software, ERP, Excel files), the channels and how fine-grained the rules per customer segment are.

On variable fees, an SMS costs about 15 to 25 FCFA, a WhatsApp reminder message 10 to 40 FCFA depending on Meta's pricing, a Wave merchant collection around 1% and a card payment between 2.5 and 3.5%. Automatic matching, which links each payment received to the right invoice, saves the accountant hours of reconciliation at every month end.

The 5-week plan

Week 1: aged balance analysis, customer segmentation (key accounts, distributors, individuals), rule selection. Week 2: connection to the invoicing software and the Wave Business account. Week 3: drafting and approval of message templates, in French and in Wolof where useful for some customers. Week 4: tests with 20 pilot customers. Week 5: full rollout and training of the accounting team.

Mini case study

Mr Sow, CFO of an electrical equipment distribution SME in Dakar, generates 1,800,000,000 FCFA in annual revenue with 90 days of average payment time. His receivables reach about 444,000,000 FCFA. Cutting that delay by 25 days frees about 123,000,000 FCFA of cash (1.8 billion × 25 / 365). At a 9% overdraft rate, financing cost savings are about 11,000,000 FCFA a year, for a 3,200,000 FCFA project and 100,000 FCFA a month in running costs. Payback in about 4 months, not counting the bad debts avoided.

FAQ

Will customers resent automatic reminders? Messages are personalised and polite, and key accounts can be excluded for human follow-up. In observed rollouts, fewer than 2% of customers complain, and many appreciate the direct payment link.

Can we collect through Orange Money too? Yes, Orange Money integration adds about 300,000 to 500,000 FCFA to the project. Wave remains the priority as it covers most business mobile payments in Dakar.

Do we need to change invoicing software? No, the system connects to Sage, Odoo, QuickBooks or Excel exports. A connection through a daily automatic export costs about 400,000 FCFA.

What results can we expect in 3 months? As an order of magnitude, a 15 to 20 day drop in average payment time in the first 3 months, then 20 to 30 days at 6 months. The share of invoices paid before D+15 often rises from 30% to over 55%.

Is our customers' data protected? Processing is declared to the CDP under Senegal's Law 2008-12 on personal data. Access is named and every message sent is logged.

Let's scope your project. Send us your aged balance and the name of your invoicing software: we will price a reminder system with Wave payment between 1,500,000 and 4,000,000 FCFA, delivered in 5 weeks. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.