Building a product that touches money in Nigeria? Here's everything you need to get right before you go live — from payment gateways to compliance.
Nigeria has one of the most active FinTech ecosystems in Africa. Paystack, Flutterwave, PiggyVest, Cowrywise, Carbon — companies built here have gone on to raise hundreds of millions and serve tens of millions of users. But for every successful FinTech product, there are dozens that launched with gaps in their infrastructure that cost them users, money, and in some cases, their operating license.
This is a practical checklist for founders building products that handle transactions, wallets, or financial data in Nigeria.
1. Payment gateway integration
The two dominant options in Nigeria are Paystack and Flutterwave. Both are well-documented and reliable. The choice often comes down to pricing, support, and which gateway your target users' banks have fewer friction points with. For most consumer products, Paystack is the default. For businesses with international users or cross-border payments, Flutterwave offers more flexibility.
- Implement webhook verification — never trust payment status from the redirect URL alone.
- Handle idempotency: duplicate webhook deliveries are common; your system must handle them gracefully.
- Store transaction references from the gateway, not just your internal IDs.
- Test both successful and failed payment flows before going live.
2. Wallet architecture
If your product includes a wallet feature — storing user balances — you need to build this correctly from day one. A wallet is not a column in a users table that you increment and decrement with UPDATE statements. It's a ledger.
- Use double-entry accounting: every balance change creates two ledger entries.
- Never update balances with a direct UPDATE — use transactions that create immutable ledger records.
- Your balance is always derived from the sum of ledger entries, not stored directly.
- Implement reconciliation: you should be able to verify your total wallet liability matches your payment gateway float at any point.
A wallet built incorrectly will produce incorrect balances under concurrent operations. It's one of the most common and most expensive bugs in FinTech products.
3. Escrow systems
If your platform facilitates transactions between two parties (marketplace, logistics, services), you need escrow logic — funds that are held until conditions are met. Escrow state machines need to handle: funded, disputed, released, and refunded states. Every state transition needs to be logged with a timestamp and the identity of whoever triggered it.
4. KYC and compliance
The CBN has clear requirements for Know Your Customer (KYC) tiering in Nigeria. Tier 1, 2, and 3 accounts have different limits and different verification requirements. You need to build this into your user onboarding flow, not add it as an afterthought when the regulator asks.
- BVN verification is the minimum for any product holding user funds.
- NIN verification is increasingly required for higher-tier accounts.
- Transaction monitoring: flag and report transactions that meet AML thresholds.
- Audit logs for all financial operations must be tamper-proof and retained for a minimum of 5 years.
5. Security essentials
- All financial data encrypted at rest and in transit.
- PCI DSS compliance for any product storing card data (most can avoid this by delegating to the gateway).
- Separate API keys for test and production environments — never use production credentials in development.
- Rate limiting on all financial API endpoints.
- Multi-factor authentication for any account with the ability to initiate transfers.
6. Operational resilience
Payment systems need to handle partial failures gracefully. What happens if the payment gateway confirms a payment but your server crashes before you can record it? You need reconciliation jobs that compare your internal records against gateway records and flag discrepancies automatically. This should run daily at minimum.
Building FinTech infrastructure correctly is hard, but it's not complicated if you approach it systematically. The infrastructure that earns user trust in financial products is the infrastructure that handles failure cases as well as happy paths. Get this right, and your product becomes something users recommend to their families. Get it wrong, and a single incident can define your brand for years.
