The verdict in three sentences
An aggregator (one API, all operators) gets you live fast and spares you maintaining five integrations, but takes a 0.5 to 1% margin on top of operator fees. Direct integration (one API per operator) lowers your per-transaction cost and keeps you independent, at the price of heavier maintenance and a longer go-live. In 2026, below roughly 3 to 5 million FCFA in monthly volume, the aggregator is almost always cheaper on total cost.
The real matchup: cost, coverage, dependency
The classic trap is comparing per-transaction fees only. You must fold in maintenance cost, time to market, and vendor dependency.
| Criterion | Direct integration | Aggregator |
|---|---|---|
| Operators covered | 1 per integration | 3-6 at once |
| Per-transaction fee | Lowest (operator only) | +0.5 to 1% margin |
| Initial dev cost | 200,000 - 600,000 FCFA/operator | 150,000 - 400,000 FCFA total |
| Monthly maintenance | 50,000 - 150,000 FCFA | 25,000 - 60,000 FCFA |
| Time to market | 2-4 weeks/operator | 1-2 weeks |
| Vendor dependency | Low (you control it) | High (the hub is critical) |
With direct integration, each new operator (Wave, Orange Money, Free Money, MTN) is a project of its own. With an aggregator, you often add them from a dashboard.
When to switch from one to the other
The switching threshold depends on volume. The more you collect, the heavier the aggregator margin weighs, until it justifies bringing the most-used operators in-house.
| Monthly volume | Recommended choice | Rationale |
|---|---|---|
| < 1M FCFA | Aggregator | Simplicity, dev cost amortized fast |
| 1-3M FCFA | Aggregator | Margin still below direct maintenance cost |
| 3-8M FCFA | Hybrid | Direct on Wave (dominant), aggregator for the rest |
| > 8M FCFA | Direct + aggregator fallback | Saved margin > maintenance cost |
The hybrid model often wins at scale: direct integration on the operator that carries 70-80% of your volume, aggregator to cover the long tail effortlessly.
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Mini case study
Ibrahim runs a grocery store in Abidjan, 4,000,000 FCFA in monthly mobile money sales. On an aggregator at 0.8% margin he pays 32,000 FCFA/month in margin, plus 40,000 FCFA maintenance = 72,000 FCFA. Moving Wave (75% of volume, i.e. 3,000,000 FCFA) to direct saves the margin on that share (24,000 FCFA/month), keeps the aggregator for the remaining 25% (8,000 FCFA margin), and pushes maintenance to 90,000 FCFA. Hybrid total: ~98,000 FCFA... more expensive at this volume. Takeaway: Ibrahim keeps the aggregator until ~8M FCFA/month, where the saved margin will finally beat the extra maintenance.
FAQ
Does an aggregator really raise my fees? Yes, typically by 0.5 to 1% on top of the operator fee. On 2,000,000 FCFA/month at 0.8% that's 16,000 FCFA monthly margin: weigh it against the dev and maintenance time you save.
Is direct integration more reliable? Not necessarily. You control everything, but you alone carry maintenance, API changes and incidents. A good aggregator pools that reliability.
Can I switch aggregators later? Yes, if your code isolates payment logic behind a single interface. Kolonell always builds a decoupled payment module to avoid vendor lock-in.
How many operators must I cover in Senegal? At minimum Wave and Orange Money, which hold most of mobile money. Adding Free Money widens reach a little; cards via aggregator serve the diaspora.
Is the hybrid model hard to maintain? It requires routing each payment to the right rail, but stays manageable with a unified module. It's the best cost/independence trade-off beyond ~3M FCFA/month.
Let's talk about your project. Kolonell builds a decoupled payment module that lets you move from aggregator to direct integration without a rewrite. 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.
