The verdict in three sentences
The total cost of a mobile money integration breaks into three buckets: development (400,000 to 900,000 FCFA in Lagos in 2026), transaction fees (1 to 3 % for life) and annual maintenance (around 150,000 FCFA). For almost every merchant, an aggregator (Paystack, Flutterwave, CinetPay) is cheaper than a bespoke bank gateway, whose break-even only arrives above ~6,000,000 FCFA of monthly volume. The most common trap is forgetting sandbox testing time, which quietly adds 2 billable dev days.
The three cost buckets to budget
A classic mistake is to compare only the development price. Yet a "free" plugin with 3 % fees is more expensive than an 800,000 FCFA build at 1 % as soon as volume climbs. Here is the 2026 order of magnitude for an online store in Lagos.
| Item | 2026 range | Nature |
|---|---|---|
| Direct API integration (bank-grade) | 400,000 – 900,000 FCFA | One-off |
| Paystack/CinetPay SDK integration | 150,000 – 400,000 FCFA | One-off |
| Aggregator wallet fees | ~1 % | Recurring |
| Aggregator card fees | 2.9 % + 100 FCFA | Recurring |
| Annual maintenance (webhooks, API updates) | 150,000 FCFA | Recurring |
| Sandbox testing (often forgotten) | ~2 dev days | Hidden one-off |
The Paystack or CinetPay SDK is free to download: what you pay for is integration time, not a license. A direct API takes more work (webhook handling, reconciliation) but offers the lowest fee on the market.
Free plugin or bespoke gateway?
The decision hinges on volume. Below 6,000,000 FCFA collected per month, an aggregator always wins: you pool compliance, security and updates. Above that, a gateway negotiated directly with the operator can save 0.3 to 0.5 points.
| Monthly volume | Recommended solution | Estimated fees/month |
|---|---|---|
| < 1,000,000 FCFA | Aggregator plugin | 10,000 – 30,000 FCFA |
| 1 – 6,000,000 FCFA | Direct wallet + card aggregator | 30,000 – 120,000 FCFA |
| 6 – 20,000,000 FCFA | Negotiated volume contract | 120,000 – 300,000 FCFA |
| > 20,000,000 FCFA | Bespoke gateway | Quote |
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Mini case study
Awa runs a cosmetics store in Lagos with 3,500,000 FCFA of monthly online revenue. She is torn between a 2.9 % card plugin and a 1 % wallet integration. On the wallet her monthly fees are 35,000 FCFA; on card, 101,500 FCFA. The annual gap reaches 798,000 FCFA. The wallet build cost her 700,000 FCFA once: it pays back in under eleven months, and everything after is pure savings.
FAQ
Is a payment plugin really free? The plugin itself often is (Paystack SDK, CinetPay), but you pay for the integration and above all the per-transaction fees, 1 to 3 % for life. That recurring percentage weighs the most, not the upfront price.
How long does a direct API integration take in Lagos? Budget 5 to 10 working days depending on complexity, including roughly 2 days just for sandbox testing and webhook validation. That testing time is often underestimated in quotes.
Should I integrate several payment methods? Yes: offering two wallets covers most local buyers, and adding cards captures the diaspora. Each extra method adds roughly 150,000 to 400,000 FCFA of dev.
When does a bespoke gateway become worthwhile? From around 6,000,000 FCFA of monthly volume, the 0.3-0.5 point saving on fees starts to exceed the extra dev and maintenance cost. Below that, stay on an aggregator.
How much does the Kolonell referral program pay? If you refer an e-commerce project, you earn 12 % of the sale, and 5 % recurring on a showcase site. A single qualified lead can be worth several hundred thousand FCFA.
Let's talk about your project. We'll cost your wallet and card integration together, real fees included. 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.
