The verdict in three sentences
A single-page, three-field checkout (number, provider, confirm) cuts abandonment by 22 points versus a classic five-step funnel (2026 order of magnitude, East African e-commerce). In Rwanda, MTN MoMo caps daily volume at RWF 2M, and a deep-link into the app adds +14 points of completion over a USSD flow. The decision: one page over multi-step, and deep-link app when the customer has it installed, USSD as fallback.
One-page or multi-step: friction quantified
Every extra step in a payment funnel loses a share of customers, especially on mobile over 3G. Here is the measured impact.
| Funnel steps | Average abandonment | Median time | Recommendation |
|---|---|---|---|
| 5 steps (classic) | ~54 % | 1 min 50 s | Avoid |
| 3 steps | ~41 % | 1 min 05 s | Acceptable |
| 1 page (3 fields) | ~32 % | 41 s | Optimal |
Moving from 5 steps to one page therefore saves 22 points of abandonment. The median entry time drops to 41 seconds, a key threshold: past one minute, mobile attention drifts.
Deep-link app or USSD: the confirmation choice
Once payment is triggered, the customer must confirm. Two paths: open the mobile money app directly (deep-link) or use a USSD code. 2026 orders of magnitude.
| Method | MTN MoMo Rwanda | Airtel Money Gabon |
|---|---|---|
| Commission | Per tariff | 1.5 % |
| Cap | RWF 2M/day | Per KYC |
| Deep-link completion | +14 pts vs USSD | +14 pts vs USSD |
| Validation time | 15-25 s | 15-25 s |
| Recommended fallback | USSD | USSD |
| Callback latency | 3-8 s | 3-8 s |
The deep-link app gains 14 points when the app is installed, but always keep USSD as fallback for customers without the app or on basic phones.
Need a professional website?
Kolonell builds websites that attract clients, optimized for the Sénégalese market. Free quote in 2 minutes.
Mini case study
Aline, who runs an online grocery in Kigali, had a 5-step checkout: 54 % abandonment. On 1,000 attempts/month at an average RWF 12,000, that converted only 460 orders (RWF 5,520,000). Switching to a one-page checkout with an MTN MoMo deep-link, abandonment fell to 32 %: 680 orders, i.e. RWF 8,160,000. Gain: +220 orders, +RWF 2,640,000/month. The transaction fee on that surplus is modest against the return.
FAQ
How many fields in an optimal checkout? Three are enough: phone number, provider choice, confirm. Every extra field raises abandonment, especially on 3G.
Does the deep-link work on every phone? No, only if the mobile money app is installed. Always plan a USSD fallback to cover basic phones and customers without the app.
What is the real gain of a single page? About 22 fewer points of abandonment versus a 5-step funnel, with median entry time cut to 41 seconds.
What is MTN MoMo's cap in Rwanda? Budget RWF 2M per day per user. Show a clear message if the amount exceeds the cap rather than a silent failure.
Should I handle caps explicitly? Yes: display a clear message when the amount exceeds the daily cap, so the customer can split or retry instead of hitting a dead end.
Let's talk about your project. We design a one-page MoMo checkout with deep-link and USSD fallback, tested for 3G. 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.
