Ever wondered why you can buy a snack with a paper note, but the same note can also help a farmer get a loan?
💡 In Simple Words: Money is a trusted ticket that lets you trade goods, save value, and settle debts. Banks are the friendly middle‑men that turn those tickets into loans, deposits, and a steady flow of cash for the whole economy.
What is Money? – Functions and Types
Functions of Money
Economists agree on three main jobs that money does:
- Medium of exchange – it lets you buy a pizza without bartering for a bike.
- Unit of account – it gives a common ruler to compare the price of a book, a bus ticket, or a pair of shoes.
- Store of value – it holds purchasing power over time, so today’s ₹100 can still buy something next month.
Think of money as a Swiss Army knife: one tool for many everyday tasks.
Types of Money
Not all money looks the same. Here are the three big families you’ll meet in the exam:
- Commodity money – a physical item that has value by itself, like gold or silver.
- Fiat money – paper notes and coins that have value because the government says so, not because of any metal inside.
- Electronic/digital money – balances in bank accounts, mobile wallets, or online payment platforms.
In India, the Reserve Bank of India (RBI) prints the fiat notes you see in your pocket.
Banking System in India – Who Does What?
Commercial Banks vs. RBI
Both are part of the banking system, but they wear very different hats.
| Aspect | Commercial Bank | Reserve Bank of India (RBI) |
|---|---|---|
| Primary role | Accept deposits, give loans, provide everyday services | Control money supply, act as banker’s bank, issue currency |
| Ownership | Private or public limited companies | Government‑owned central authority |
| Key tool | Repo rate (rate at which it borrows from RBI) | Repo rate, reverse repo, cash reserve ratio (CRR) |
| Regulation | Follow RBI’s rules | Set those rules |
When the RBI raises the repo rate, commercial banks feel the pinch and may charge higher interest on your auto loan.
How Money is Created – The Deposit Multiplier
Most students think only the RBI can print money, but banks play a hidden role too. Here’s a quick picture of the cycle:
The magic number behind this cycle is the reserve ratio – the fraction of deposits banks must keep idle (like water left in a pipe). If the RBI sets a 4% reserve ratio, the deposit multiplier becomes 1/0.04 = 25. That means a ₹1,000 deposit can eventually generate up to ₹25,000 of new money in the economy.
Key Terms to Remember
- Liquidity – how quickly an asset can be turned into cash without losing value, like water flowing freely through a pipe.
- Money supply (M1, M2, M3) – different baskets of cash, demand deposits, and time deposits that economists track.
- Cash Reserve Ratio (CRR) – the minimum percent of deposits that banks must keep with the RBI.
- Repo rate – the rate at which banks borrow short‑term money from the RBI.
- Credit creation – the process of turning deposits into loans, which expands the money supply.
📝 Likely Exam Questions
- Explain the three functions of money with suitable examples.
Answer: Money acts as a medium of exchange (buying a movie ticket), a unit of account (comparing the price of a shirt vs. a pair of shoes), and a store of value (saving ₹500 today to buy a book next month). - Differentiate between commercial banks and the RBI.
Answer: Commercial banks accept deposits and give loans; they are profit‑seeking entities. The RBI is the central bank, controls money supply, issues currency, and regulates commercial banks. - How does the deposit multiplier work? Illustrate with a reserve ratio of 5%.
Answer: With a 5% reserve ratio, the multiplier = 1/0.05 = 20. A ₹1,000 initial deposit can lead to a maximum of ₹20,000 of total money created through repeated lending and redepositing. - List and briefly explain two ways the RBI can control inflation.
Answer: (i) Raising the repo rate makes borrowing costlier, reducing spending. (ii) Increasing the cash reserve ratio forces banks to hold more idle cash, limiting loan creation. - What is meant by ‘fiat money’? Why does it work?
Answer: Fiat money is currency that has value because the government declares it legal tender, not because of any intrinsic commodity value. It works because everyone trusts the government’s promise and accepts it for transactions.