Multi-Tenant Billing & Ledger Infrastructure

A multi-tenant SaaS platform needed real financial infrastructure behind its billing, not just a payment gateway bolted onto a database. Without a proper accounting model, revenue recognition, refunds, and reconciliation against actual payment provider settlements were being handled ad hoc, making the numbers finance and engineering each trusted diverge more with every billing cycle.

A double-entry ledger built on an 80-account, Nigerian-compliant chart of accounts, with six billing adapters for different payment and subscription flows and native Paystack integration. Every transaction: subscription charge, refund, proration, provider fee, posts as a balanced ledger entry, so the books reconcile by construction instead of by month-end cleanup.