Nigeria is the textbook case where depth in one market decides everything: method coverage, failure behaviour and the settlement path matter far more than how many countries a provider lists. Paystack value lies in single-market depth, and so does its boundary. This guide covers positioning, onboarding, integration trade-offs, method behaviour, fee components, division of work and recurring misreadings.
A working payment integration only means money can be collected; what decides whether finance can close the books is reconciliation. This is an operating handbook: when bills are generated, how to download them, how to match them against local records, what to do with overages and shortages, what must be retained, and an end-of-day sequence you can follow directly.
Refunds and settlement are where most post-launch payment incidents originate. Refunds carry window and amount constraints with many failure modes; settlement follows cycles and freeze rules, and cleared funds are not always available funds. This handbook covers the refund lifecycle, partial and repeat refunds, settlement cycles and withdrawals, fund freezes, and complaint handling order.