Money and Banking

The full picture

Think about what trade looked like before money. A paddy farmer who needed cloth had to find a cloth-weaver who happened to want paddy — at the same time, in the same place. Economists call this the 'double coincidence of wants', and it made large-scale trade almost impossible. Money solved this by becoming a universally accepted go-between. You sell paddy for rupees, and use those rupees to buy cloth from anyone, anytime. That single leap transformed scattered village markets into a national economy.

For something to work as money, it must serve four functions. First, it must be a medium of exchange — accepted by everyone in payment. Second, a store of value — ₹500 today should still buy roughly the same things next month. Third, a unit of account — all prices are expressed in rupees, so you can compare the value of a pen with the value of a phone. Fourth, a standard of deferred payment — when you take a loan, you promise to repay a fixed rupee amount in the future. Modern Indian currency (rupee notes) is fiat money: it has no intrinsic value, but it works because the government declares it legal tender and the RBI maintains its credibility. Coins are issued by the Ministry of Finance and distributed through the RBI.

Now here is where it gets interesting: the money in the economy is far greater than the currency printed by the RBI. This happens through credit creation. Suppose you deposit ₹10,000 in Federal Bank, Ernakulam. The RBI requires Federal Bank to keep a minimum percentage — called the Cash Reserve Ratio (CRR), currently around 4% — as a reserve. Federal Bank keeps ₹400 and lends the remaining ₹9,600 to Rahul, who needs it for his small printing business. Rahul pays his supplier, who deposits that ₹9,600 into South Indian Bank. South Indian Bank keeps 4% (₹384) and lends out ₹9,216. This chain continues, and the original ₹10,000 deposit eventually supports many times that amount in loans across the banking system. The formula is: Money Multiplier = 1 ÷ CRR. At 4% CRR, ₹1 of initial deposit can theoretically support up to ₹25 of total money supply in the system.

The Reserve Bank of India (RBI) is not a commercial bank — it is the central bank, and its job is to manage the entire monetary system. It has four core functions. One: it is the sole authority to issue currency notes (coins come from the government mint). Two: it acts as banker to the central and state governments, managing their accounts and borrowing. Three: it regulates and supervises all commercial banks — setting rules, conducting inspections, and stepping in as 'lender of last resort' if a bank faces a crisis. Four: it conducts monetary policy, using tools like the repo rate and CRR to control how much money flows through the economy.

The RBI's most powerful everyday tool is the repo rate — the interest rate at which commercial banks borrow overnight funds from the RBI. When the RBI raises the repo rate, borrowing becomes expensive for banks, which then raise their own lending rates. Home loans, business loans, and personal loans all get costlier. People borrow less, spend less, and inflation cools. When RBI cuts the repo rate, the reverse happens: borrowing becomes cheap, investment picks up, and growth is encouraged. Under India's Flexible Inflation Targeting framework (introduced in 2016), the RBI's Monetary Policy Committee is legally required to keep CPI inflation at 4%, with a tolerance band of ±2%. If inflation stays above 6% for three consecutive quarters, the RBI must explain to the government why — a rare form of public accountability built into law.

An Indian example

In 2022, Meera, a 35-year-old schoolteacher in Thrissur, took a home loan of ₹30 lakh from SBI at a floating rate of 7% per annum over 20 years. Her EMI was ₹23,260 per month — manageable on her salary. That same year, inflation in India climbed above 7%, breaching the RBI's upper tolerance limit of 6%. The RBI's Monetary Policy Committee met and raised the repo rate in steps from 4% to 6.5% over about a year. SBI, which borrows from RBI at the repo rate, immediately raised its lending rate. Meera's home loan rate jumped to 9.5%. Her EMI rose to ₹27,960 — an extra ₹4,700 every month. She had to cut her household spending to adjust. Meanwhile, her mother, who had kept ₹5 lakh in a fixed deposit, saw the interest rate on her FD rise from 5.5% to 7.5% — finally beating inflation. The same RBI action hurt Meera the borrower and helped her mother the saver. This is exactly how monetary policy works: it is not painless, but it protects the purchasing power of the rupee for everyone over the long run.

Common misconceptions to watch for

• Wrong belief: 'Money and wealth are the same thing — if I have ₹10 lakh in cash, I am ₹10 lakh richer.' Correction: Money is a medium of exchange, not wealth itself. If inflation runs at 7%, the real purchasing power of that ₹10 lakh shrinks to about ₹9.35 lakh within a year. Wealth means productive assets — land, a business, gold — that tend to hold or grow in real value. Cash stored at home quietly loses value to inflation.
• Wrong belief: 'Banks simply keep your deposit in a vault and lend the same money out — so only ₹1,000 of loans can come from a ₹1,000 deposit.' Correction: Banks practice fractional reserve banking. With a 4% CRR, a ₹1,000 deposit allows the bank to lend ₹960, which is deposited elsewhere, allowing that bank to lend ₹921.60, and so on. The entire banking system — not one bank alone — multiplies the original deposit up to 25 times in total money supply. A single bank cannot lend more than it receives, but the system as a whole creates far more money than the initial deposit.
• Wrong belief: 'The RBI is just a bigger bank, like SBI — it accepts deposits and gives loans to earn profit.' Correction: The RBI is a central bank, not a commercial bank. It does not take deposits from the public or compete for profit. Its job is to issue currency, regulate all other banks, and run monetary policy in the public interest. Commercial banks like SBI or HDFC earn profit from the interest margin between deposits and loans; the RBI answers to Parliament and the national economy, not to shareholders.