Money and Banking

The full picture

Before money existed, trade meant barter — a farmer who wanted a new sickle had to find a blacksmith who also wanted grain, right then, in matching quantities. This 'double coincidence of wants' made complex economies impossible. Money solved this by becoming a universally accepted go-between. Shells, salt, gold coins, and today's ₹500 note have all served as money not because of their material, but because society agreed to accept them. A ₹500 note is just printed paper — it has value because you believe your kirana shop owner will accept it tomorrow, and he accepts it because he believes the same.

Money performs four functions that hold an economy together. As a medium of exchange, it lets you sell mangoes to one person and buy petrol from a stranger — no matching needed. As a store of value, it lets you sell your crop in October and buy a motorcycle in March; you cannot store mangoes for five months, but you can store rupees. As a unit of account, every price in India — whether it is a samosa for ₹20 or a flat for ₹80 lakh — is expressed in rupees, giving everyone a common measuring stick. Finally, as a standard of deferred payment, it allows credit: a student takes an education loan today and repays in rupees five years later. Without this fourth function, banks and EMIs would not exist.

Commercial banks — SBI, HDFC, Axis, and thousands of others — are the engine of credit creation. When you deposit ₹1,00,000 in your savings account, the bank does not lock it in a vault. It keeps a fraction (mandated by the RBI as the Cash Reserve Ratio, or CRR) and lends the rest. If CRR is 10%, the bank holds ₹10,000 with the RBI and lends ₹90,000 to a garment trader. The trader pays his fabric supplier, who deposits ₹90,000 in another bank. That bank keeps ₹9,000 and lends ₹81,000 out again. Each round, new deposits are created. The total deposits across the banking system can reach ₹10,00,000 from your original ₹1,00,000 — a tenfold expansion. This is called credit creation, and the formula is: Credit Multiplier = 1 ÷ CRR. No new currency was printed; banks just kept passing the money along, each time creating a fresh deposit entry.

The Reserve Bank of India (RBI) sits at the top of this system as India's central bank, and its job is very different from a commercial bank's. The RBI issues currency (every note says 'I promise to pay the bearer'), acts as banker to the government, regulates all commercial banks, manages India's foreign exchange reserves, and — most importantly — controls the money supply to keep inflation in check. Its two main tools are: the repo rate (the interest rate at which banks borrow overnight from the RBI) and the CRR. When inflation rises, the RBI raises the repo rate: borrowing becomes costlier for banks, they lend less, spending falls, prices cool. When growth slows, the RBI cuts the repo rate: credit becomes cheaper, businesses invest, jobs are created. The RBI also acts as lender of last resort — if a bank faces a sudden run (everyone demanding money back at once), the RBI steps in with emergency funds to prevent a collapse.

Credit creation has real limits that the NCERT textbook expects you to know. The theoretical maximum multiplier (1 ÷ CRR) assumes every rupee lent is re-deposited in a bank immediately. In practice three things reduce the multiplier: (1) people hold some cash in hand and do not deposit everything, (2) banks voluntarily keep excess reserves as a safety buffer, and (3) not all loans are repaid — bad loans reduce the funds available for the next lending round. So if CRR = 4%, the theoretical multiplier is 25, but the actual multiplier in India is much lower. Understanding this gap is what separates a student who just memorises the formula from one who truly understands how banking works.

An Indian example

Priya runs a small textile shop in Surat. In January 2023 her monthly turnover was ₹8 lakh, and she took a working-capital loan of ₹10 lakh at 9% annual interest to buy fabric stock — a monthly interest outgo of ₹7,500. By June 2023, the RBI had raised the repo rate from 4% to 6.5% to fight inflation — and her bank revised her loan rate to 11.5%. Her monthly interest outgo jumped from ₹7,500 to ₹9,583. She could not raise prices because competition was tight, so she cut her fabric order by 30%. Her fabric supplier in Bhiwandi saw demand fall and laid off two daily-wage workers. Across millions of shops like Priya's, this interest-rate chain reaction reduced consumer spending, cooled inflation from 7.4% to 4.8% by early 2024 — exactly what the RBI intended. Priya's higher EMI was the cost India paid to stabilise prices for everyone.

Key concepts covered

• Functions of money
• Commercial banks
• Central bank functions
• Credit creation

Common misconceptions to watch for

• Wrong belief: 'The RBI controls money supply simply by printing more or fewer rupee notes.' Correction: Physical printing is only a tiny part of money supply. Most money in the economy is digital bank deposits created through credit. The RBI primarily controls money supply by changing the repo rate and CRR — tools that affect how much commercial banks lend, not how many notes roll off a press.
• Wrong belief: 'When a bank lends money, it is giving away its depositors' money and the depositor loses it.' Correction: The depositor's account balance stays unchanged — the bank creates a new loan account and credits the borrower simultaneously. Both balances exist at the same time. This is why the total money supply grows beyond the original deposit; the bank has created new purchasing power, not transferred existing funds.
• Wrong belief: 'A higher CRR means banks are healthier and can lend more.' Correction: It is the opposite. A higher CRR forces banks to lock away a larger fraction with the RBI, leaving less to lend. The credit multiplier (1 ÷ CRR) falls. A higher CRR contracts the money supply and is used by the RBI to fight inflation — not to strengthen banks.