The verdict in three sentences
Unlike a bank card, mobile money has no native auto-debit: each renewal needs an action or a pre-approval token. Without orchestrated reminders (*dunning*), involuntary churn reaches 12 to 25% and cuts MRR even though the customer never truly meant to leave. A mandate + D-2 reminder + D+1/D+3 retry + freeze flow recovers most of those payments.
The recurring collection flow
The goal is to make renewal almost automatic while respecting mobile money constraints. Here is the typical schedule.
| Timing | Action | Purpose |
|---|---|---|
| D-2 | SMS reminder + notification | Prepare the customer |
| D-0 | Collection attempt (token/mandate) | Charge on due date |
| D+1 | Retry 1 + reminder | Catch insufficient balance |
| D+3 | Retry 2 + payment link | Gentle last chance |
| D+5 | Feature freeze | Nudge without deleting |
| D+10 | Cancel / archive | Clean the base |
The simple D-2 reminder avoids a large share of insufficient-balance failures, the top failure reason in mobile money.
Dunning impact on MRR
Recovering involuntary churn is the cheapest lever to grow a SaaS. 2026 orders of magnitude.
| Scenario | Involuntary churn | MRR kept (base UGX 3,700,000) |
|---|---|---|
| No dunning | 20% | UGX 2,960,000 |
| D-2 reminder only | 13% | UGX 3,219,000 |
| D-2 + D+1/D+3 retry | 7% | UGX 3,441,000 |
| Full flow + freeze | 4% | UGX 3,552,000 |
Going from 20% to 4% involuntary churn saves UGX 592,000/month of MRR on a UGX 3.7M base, i.e. UGX 7.1M/year.
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Mini case study
Grace launches an appointment SaaS in Kampala, 900 subscribers at UGX 20,000/month, i.e. UGX 18,000,000 MRR. With 20% involuntary churn she lost UGX 3,600,000/month in simply failed payments. After the full flow (D-2 reminder, retry, freeze), involuntary churn drops to 5%: she now loses only UGX 900,000/month, recovering UGX 2,700,000/month. The orchestration cost about USD 800 once.
FAQ
Why does mobile money complicate subscriptions? Because there is no universal auto-debit like cards: each renewal needs a mandate/token or a customer action, hence reminders.
What is involuntary churn? Customers lost not by choice but because a payment failed (insufficient balance, expired token). It runs 12 to 25% without dunning.
What is the D-2 reminder for? To warn the customer before the due date so they top up their account, sharply cutting insufficient-balance failures.
Should I cut access immediately on failure? No. Better to freeze gently after several retries (D+5) to leave a chance to pay, then cancel around D+10.
How much does recovering involuntary churn earn? Going from 20% to 4-5% can save 15-16% of MRR, i.e. hundreds of thousands of UGX per month depending on your base.
Let's talk about your project. We orchestrate your recurring mobile money billing and dunning to protect 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.
