The verdict in three sentences
Recurring mobile money payment rests on two building blocks: a consent mandate signed once by the customer, and a token that replays the debit without re-entry. Without failure handling, involuntary churn — subscribers lost to a mere insufficient balance — reaches 5 to 10 % per month. A J+1 / J+3 / J+7 dunning sequence recovers 40 to 60 % of those failures, for fees of 1 to 1.5 % per debit.
The lifecycle of a mandate
| Phase | Event | System action | Risk |
|---|---|---|---|
| 1. Consent | Customer authorizes the debit | Create mandate + token | Ambiguous mandate |
| 2. Activation | 1st debit succeeds | Subscription active | Initial decline |
| 3. Renewal | Periodic debit | Replay the token | Insufficient balance |
| 4. Failure | Debit declined | Trigger dunning | Involuntary churn |
| 5. Recovery | Dunning succeeds | Reactivate subscription | Abandonment |
| 6. Termination | Customer or final failure | Revoke the mandate | Phantom debit |
The mandate must be explicit (amount, frequency, how to cancel) to limit disputes. The token never stores the customer's secret code: it secures the repeat debit.
Smart retry schema (dunning)
The leading cause of failure is not deliberate refusal but insufficient balance at the wrong time of month. Hence a staggered retry:
| Day | Action | Channel | Cumulative recovery rate (2026 ballpark) |
|---|---|---|---|
| J+0 | Debit fails | — | 0 % |
| J+1 | Retry + notification | WhatsApp/SMS | ~25 % |
| J+3 | 2nd retry + reminder | ~45 % | |
| J+7 | Final retry + manual link | WhatsApp + Wave link | ~55 % |
| J+10 | Soft access suspension | Email/app | — |
The logic: retry when the customer is likely to have topped up (often early month or after payday), and always offer a manual payment link as a safety net. A polite WhatsApp reminder converts better than a hard block.
Fees and margin impact
| Element | 2026 ballpark |
|---|---|
| Fee per debit | 1-1.5 % |
| Involuntary churn without dunning | 5-10 %/month |
| Involuntary churn with dunning | 2-4 %/month |
| Post-dunning recovery rate | 40-60 % |
| Average recovery delay | 1-7 days |
For a SaaS billing 10,000 FCFA/month to 500 subscribers, going from 8 % to 3 % involuntary churn preserves 25 subscribers/month, that is 250,000 FCFA of MRR saved every month.
Mini case study
Moussa sells management software at 9,900 FCFA/month with 400 subscribers, that is 3,960,000 FCFA of MRR. Without dunning, he loses 8 % = 32 subscribers/month to plain balance failures, that is 316,800 FCFA/month.
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By deploying a J+1 / J+3 / J+7 sequence with WhatsApp reminders and a backup Wave link, he recovers 50 % of failures, bringing involuntary churn down to 4 %. He saves 16 subscribers/month = 158,400 FCFA/month = 1,900,800 FCFA/year, for a debit cost of only 1 % per transaction. Dunning is the best ROI of any subscription.
FAQ
What is a recurring payment mandate?
It's the customer's explicit consent to be debited periodically (amount, frequency, cancellation). It's created once and tied to a token that replays the debit without re-entering the code.
Why is involuntary churn 5 to 10 %?
The main cause is insufficient balance at debit time, not a will to cancel. Without dunning, these customers are lost even though they wanted to stay subscribed.
How does J+1/J+3/J+7 dunning work?
You retry the debit at growing intervals while notifying the customer on WhatsApp or SMS, recovering 40 to 60 % of failures. A manual payment link acts as a net at the final reminder.
Does the token store the customer's secret code?
No. The token secures the repeat debit without ever keeping the secret code; the customer authorizes via the mandate, and the operator handles authentication.
What fees apply to a recurring debit?
2026 ballpark: 1 to 1.5 % per debit, like a one-off payment. It's negligible against the MRR recovered by good failure handling.
Let's talk about your project. We architect your mandates, tokens and dunning sequences to save your MRR. 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.
