Money and Banking
How money overcomes the limits of barter, the functions it performs, and how the RBI together with commercial banks creates and controls the supply of money in a modern economy.
Money, banking and monetary management are perennial Prelims favourites — expect direct questions on the functions of money, CRR vs SLR, the money multiplier, RBI's functions and high-powered money. In GS-III this chapter underpins answers on monetary policy, banking-sector reform, credit creation and financial inclusion. The static layer (RBI's 1935 founding under the RBI Act, 1934) is classic factual bait.
Understand the chapter
From Barter to Money: Why Money Exists
In any economy with market transactions, exchanging goods directly (barter) requires a 'double coincidence of wants' — each party must want exactly what the other offers. As the number of traders grows, the search costs of finding such a match become prohibitive. Money is the commonly accepted intermediate good that breaks this deadlock: people sell their surplus for money and use it to buy what they need.
- Barter exchange = goods-for-goods with no money mediating.
- Double coincidence of wants is barter's core flaw (e.g., rice-seller must find a cloth-seller who wants rice).
- Money is acceptable to all parties, so it smoothens and lowers the cost of every transaction.
The Three Functions of Money
Money performs three roles in a modern economy. As a medium of exchange it facilitates transactions; as a unit of account it expresses the value of all goods in common monetary units, allowing relative prices to be computed; and as a store of value it carries wealth forward over time because it is non-perishable, cheap to store and universally accepted. A general rise in the price level erodes money's purchasing power.
- Medium of exchange — money's principal, primary function.
- Unit of account — value of all goods stated in rupees; lets us compute relative prices.
- Store of value — wealth held for future use; needs a stable value to work well.
- Other assets (gold, land, bonds) also store value but lack money's liquidity and universal acceptability.
Cashless Society and Financial Inclusion
A cashless society conducts transactions through transfer of digital information rather than physical notes and coins. India has invested in reforms for greater financial inclusion, leveraging high mobile and smartphone penetration to make it a realistic goal.
- Key initiatives: Jan Dhan accounts, Aadhaar-enabled payment systems, e-Wallets, National Financial Switch (NFS).
- Goal: deepen financial inclusion and reduce dependence on physical cash.
Demand for and Supply of Money
The demand for money is driven by the value of transactions to be made: higher income means more transactions and thus higher money demand. It also depends inversely on the interest rate, since holding money means forgoing interest on deposits — so at higher interest rates money demand falls. On the supply side, money equals cash plus bank deposits, created jointly by the central bank and the commercial banking system.
- Money demand rises with income (more transactions).
- Money demand falls as interest rates rise (higher opportunity cost of holding cash).
- Money supply = currency + bank deposits; created by RBI + commercial banks.
The RBI and High-Powered Money
The Reserve Bank of India, established in 1935, is the country's central bank. It issues currency, controls money supply, acts as banker to the government, is custodian of the nation's foreign exchange reserves and serves as banker to the banking system. Currency it issues — held by the public or by commercial banks — is called high-powered money because it forms the base for credit creation.
- RBI's five functions: issue currency; control money supply; banker to government; banker to banks; forex custodian.
- High-powered money = reserve money = monetary base = currency issued by RBI.
- Tools to control money supply: bank rate, open market operations, variations in reserve ratios.
Credit Creation: The Lala Story and the Money Multiplier
Like goldsmith Lala issuing paper receipts against deposited gold, banks lend because they assume not all depositors withdraw at once; each loan returns as a new deposit, expanding money supply. The RBI caps this by mandating a Required Reserve Ratio (CRR) plus a Statutory Liquidity Ratio (SLR). With a 20% reserve ratio, an initial Rs 100 reserve supports total deposits of Rs 500 — a money multiplier of 1/CRR = 5.
- Balance sheet: Assets = Reserves + Loans; Liabilities = Deposits; Net Worth = Assets − Liabilities.
- CRR = % of deposits a bank must keep as cash reserves; SLR = % kept in liquid form.
- Money multiplier = 1 / reserve ratio; with CRR 20%, multiplier = 5.
- Reserve requirement is the binding legal limit on how much credit a bank can create.
Policy Tools to Control Money Supply
The RBI is the sole issuer of currency and the authority that regulates how much money the banking system can create. It works through three levers: the bank rate, open market operations (buying/selling government securities), and variations in reserve ratios (CRR and SLR). Raising reserve ratios or the bank rate tightens credit; lowering them eases it.
- Reserve ratios (CRR, SLR) — direct legal limits on lending.
- Open market operations — RBI buys/sells securities to inject or absorb liquidity.
- Bank rate — the rate that influences the cost of credit in the system.
Key terms
- Barter exchange
- Direct goods-for-goods exchange without money, requiring a double coincidence of wants.
- Double coincidence of wants
- The condition where each trader must want exactly what the other offers — barter's chief limitation.
- Medium of exchange
- Money's primary function — a commonly accepted intermediary that facilitates transactions.
- Unit of account
- Money as a common measure expressing the value of all goods and relative prices.
- Store of value
- Money's ability to hold purchasing power over time for future use.
- Purchasing power of money
- The quantity of goods a unit of money can buy; falls when the price level rises.
- High-powered money
- Currency issued by the RBI (held by public or banks); the base for credit creation — also reserve money/monetary base.
- CRR (Cash Reserve Ratio)
- Percentage of deposits a bank must keep as cash reserves with the RBI.
- SLR (Statutory Liquidity Ratio)
- Percentage of deposits banks must hold in liquid form in the short term.
- Money multiplier
- Ratio of money created to reserves; equals 1/reserve ratio.
- Spread
- Difference between the interest a bank charges borrowers and pays depositors — the bank's profit.
- M1
- Narrow money: Currency + Deposits.
Must-know facts exam-ready
- RBI is India's central bank, established in 1935 (parent statute: the Reserve Bank of India Act, 1934).
- Three functions of money: medium of exchange, unit of account, store of value.
- High-powered money = reserve money = monetary base = currency issued by the RBI.
- M1 = Currency + Deposits.
- Money multiplier = 1 / CRR; with CRR of 20%, multiplier = 5, so Rs 100 reserves support Rs 500 deposits.
- CRR is cash reserves kept with the RBI; SLR is reserves kept in liquid form.
- Spread = lending rate − deposit rate = the bank's profit.
- Bank balance sheet: Assets = Reserves + Loans; Liabilities = Deposits; Net Worth = Assets − Liabilities.
- Demand for money rises with income and falls as interest rates rise.
- RBI controls money supply via bank rate, open market operations and reserve-ratio variations.
- Cashless/financial-inclusion push: Jan Dhan accounts, Aadhaar-enabled payments, e-Wallets, National Financial Switch (NFS).
- Barter requires a double coincidence of wants, which money eliminates.
Memory tricks remember it for good
Traps to avoid
- CRR vs SLR: CRR is cash kept with the RBI; SLR is liquid assets the bank itself holds — not the same reserve.
- The money multiplier is the INVERSE of the reserve ratio (1/CRR); a higher CRR shrinks credit creation, it does not expand it.
- Demand for money moves OPPOSITE to the interest rate but in the SAME direction as income — aspirants flip the interest link.
- Money is not the only store of value — gold, land and bonds also store value; money's edge is liquidity and universal acceptability.
- RBI was established in 1935 but under the RBI Act of 1934 — don't merge the two dates.
- High-powered money (reserve money) is the base; M1 money supply is a multiple of it — they are not the same quantity.
Exam focus
🧠 Prelims angles
- Match the three functions of money (medium of exchange / unit of account / store of value) to examples.
- Money-multiplier sums: given the CRR, compute 1/CRR and the maximum deposits a reserve can support.
- CRR vs SLR — definition, who holds it (RBI vs bank), and effect on credit creation.
- RBI's functions and the synonyms for high-powered money (reserve money, monetary base).
- Quantitative tools of monetary policy: bank rate, open market operations, CRR, SLR.
- Financial-inclusion/cashless schemes: Jan Dhan, Aadhaar-enabled payments, e-Wallets, National Financial Switch.
✍️ Mains angles GS-III
- Has India's push for a cashless economy advanced genuine financial inclusion?Map Jan Dhan + Aadhaar-enabled payments + e-wallets + NFS + mobile penetration to access gains, then flag gaps like digital literacy and connectivity.
- How do commercial banks create credit, and how does the RBI cap it?Use the Lala/money-multiplier logic; show reserve ratios (CRR/SLR) as the binding legal limit on money creation.
- Discuss the RBI's role and instruments in regulating the money supply.List the five functions, then the 'ROB' tools (reserve ratios, open market operations, bank rate) with their tightening/easing logic.
Last-minute revision tick as you recall
- Money cures barter's double coincidence of wants.
- 3 functions = SUM: Store of value, Unit of account, Medium of exchange.
- Money demand: income up → demand up; interest up → demand down.
- RBI born 1935 (Act 1934): issues currency, controls money supply, banker to govt and banks, forex custodian.
- High-powered money = reserve money = monetary base.
- Money multiplier = 1/CRR; CRR 20% gives multiplier 5; Rs 100 reserves to Rs 500 deposits.
- CRR (cash with RBI) is not SLR (liquid assets with bank).
- M1 = Currency + Deposits; Spread = bank's profit.
- Control tools = ROB: Reserve ratios, Open market operations, Bank rate.
Distilled from NCERT Class 12 · Introductory Macroeconomics for UPSC. Always cross-check facts with the original NCERT.