Unit
- Core function: Commercial banks accept deposits from savers and channel those funds to borrowers, earning a spread between deposit rates and lending rates. This intermediation process supports economic growth by funding consumption, investment, and trade.
- Payment system: Banks provide checking accounts, debit cards, wire transfers, and automated clearing house (ACH) services that enable seamless transactions. They act as trusted third parties to clear and settle payments efficiently.
- Credit creation: Through fractional reserve banking, banks create money by lending out a portion of deposits. This multiplier effect amplifies the money supply, but also requires prudent risk management to prevent bank runs.
- Liquidity management: Banks offer liquidity to depositors by promising on-demand withdrawals while investing in longer-term loans. Managing this maturity transformation is a core challenge, addressed through reserve requirements and contingency funding plans.
- Financial advisory: Commercial banks advise corporate clients on mergers, acquisitions, capital structure, and risk management. This fee-based income diversifies revenue beyond interest margins.
- Safekeeping and custody: Banks safeguard securities, gold, and other valuable assets for clients. They provide custody services that ensure safe keeping and accurate record keeping.
- Underwriting: Banks help governments and corporations issue debt or equity securities, guaranteeing sale or distributing to investors. This investment banking activity is often separated by regulation from commercial banking.
- Economic stabilization: By extending credit during downturns and tightening during booms, banks influence business cycles. Central banks use monetary policy tools to steer commercial bank lending behavior.
- Trade finance: Banks issue letters of credit, documentary collections, and guarantees that facilitate international trade. These instruments reduce payment and performance risk for importers and exporters, enabling cross-border commerce even when counterparties are unfamiliar.
- Foreign exchange services: Commercial banks provide currency exchange, spot and forward contracts, and hedging solutions for businesses managing multinational operations. These services help clients mitigate currency risk and support cross-border investment and trade flows.
- Risk management: Banks actively identify, measure, and mitigate credit, market, operational, and reputational risks. They employ loan loss reserves, stress testing, and internal controls to protect depositors and maintain financial system stability.
Regulatory Requirement
Regulation: Basel III Capital Requirements
Commercial banks must maintain a minimum Common Equity Tier 1 (CET1) capital ratio of 4.5% of risk-weighted assets, plus a capital conservation buffer of 2.5%. These requirements ensure banks can absorb losses without taxpayer bailouts. Regulators may impose additional countercyclical buffers in overheated economies.
Quick Revision
- Banks intermediate between savers and borrowers, facilitating economic activity.
- They provide payment services, credit creation, liquidity, and safekeeping.
- Fractional reserve banking amplifies money supply but introduces liquidity risk.
- Basel III mandates minimum capital ratios to promote stability.