Commercial Banks
Class 12 Macro Economics — Meaning, Importance, and Functions of Commercial Banks
Meaning of Commercial Banks
A commercial bank is a financial institution that accepts deposits from the public and grants loans to individuals, businesses, and governments. The term commercial indicates that these banks operate on a profit motive — they earn by charging a higher interest rate on loans than what they pay on deposits. This difference is called the spread or margin.
Bank as a Bridge
Households
with Savings
BANK
Spread = 5%
(Lend − Borrow)
Businesses
need Loans
Definition
“A commercial bank is a financial institution which accepts deposits from the public and lends money to individuals, businesses, and governments for the purpose of earning profit.”
Accepting Deposits
Granting Loans
Earning Profit
Examples: SBI, PNB, HDFC
Importance / Role of Commercial Banks
Commercial banks play a crucial role in the economic development of a country. Here are the five key pillars of their importance:
Primary Functions — The Bank Engine
A bank's core business can be split into two halves working together — accepting deposits (inflow) and advancing loans (outflow).
Accepting Deposits (Inflow)
Saving Deposits
Money for future needs. Withdrawable anytime. Interest rate is low (~3-4%) to encourage regular savings.
Advancing Loans (Outflow)
Cash Credit
Interest on withdrawn amount only
Demand Loans
Interest on full amount
Short-term Loans
Fixed amount, fixed tenure
Secondary Functions — Swiss Army Knife
Beyond deposits and loans, banks offer a wide range of services. These are classified into Agency Functions (bank acts as your agent) and General Utility Functions (bank provides useful services).
Important Distinction
Bank vs NBFC / LIC
A bank must perform both functions — accepting deposits AND granting loans — to be considered a commercial bank.
- ✗LIC accepts deposits (premiums) but does NOT grant loans → Not a bank
- ✓SBI accepts deposits AND grants loans → Commercial bank
Key Takeaways
Key Takeaways
- Commercial banks act as a bridge between savers (households) and borrowers (businesses)
- Primary functions: Accepting deposits (saving, current, fixed) and advancing loans (cash credit, demand loans, short-term loans)
- The spread (lending rate − borrowing rate) is the bank's profit margin
- Secondary functions include agency services (overdraft, bill discounting, fund transfer) and utility services (locker, tax consultancy, foreign exchange)
- A bank must perform BOTH accepting deposits AND granting loans — doing only one makes it an NBFC, not a bank
- Commercial banks drive capital formation, credit flow, entrepreneurship, regional balance, and consumer support in an economy