A core banking system is the bank’s main ledger software. Every deposit, withdrawal, loan drawdown, and fee should post there so balances stay consistent whether you visit a branch, an agent, or a mobile app.
Key takeaways
- Channels (ATM, app, agent) are front ends; the core is where the legal account balance lives.
- Upgrades are expensive and risky because they touch every product and customer record.
- Poor core integration is a common reason balances disagree across channels.
- Regulators and auditors care about the core because it underpins reporting and controls.