This MCQ module is based on: Functions, Demand & Supply of Money (M1-M4)
TOPIC 6 OF 17
Functions, Demand & Supply of Money (M1-M4)
🎓 Class 12
Economics
CBSE
Theory
Chapter 3 — Money and Banking
⏱ ~25 min
🌐 Language: [gtranslate]
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Functions of Money, Demand for Money & the Four Measures of Money Supply
Why does a paper rectangle worth almost nothing pass freely from hand to hand and let us buy real bread, real petrol, real medicines? Money is the most ordinary and the most extraordinary invention of civilisation. In Part 1 we trace its journey — from the awkward double coincidence of barter through gold and silver coins to today's digital UPI rupee — and we lay down the four classical functions of money. We then follow Keynes into the demand for money (why people want to hold cash) and meet the four official measures of India's money supply: M1, M2, M3 and M4.
3.0 Why Money Is the Hinge of Modern Macroeconomics
An economy of one solitary individual on a desert island has no use for money — there is no one to trade with. Even a family on an isolated island, completely self-sufficient, can manage without money. But the moment two or more economic agents start exchanging goods through a market, money becomes the master instrument of facilitation. It removes friction, lowers search costs, and lets producers focus on producing rather than on hunting for the rare partner whose wants exactly match their own surpluses.
📜 The Riddle of the Rupee Note
Every currency note bears a promise from the Governor of the Reserve Bank of India that the holder will receive purchasing power equal to the value printed on the note.
— Adapted from RBI's statutory promise (Reserve Bank of India Act, 1934)
Without that promise, the paper has no intrinsic worth — perhaps a few paise of cotton fibre. With it, a hundred-rupee note can buy a hundred rupees of bread, fuel or transport. This chapter explains how that promise works, who guarantees it, and how the same promise — when extended through commercial banks — can multiply itself into many times its initial value.
3.1 Functions of Money — Why We Bother to Use It
3.1.1 The Awkwardness of Barter
Exchange without the mediation of money is called barter exchange?. Barter rests on the rather improbable double coincidence of wants?. Imagine you have a surplus of rice and you want clothing. You must now find another person who simultaneously (a) has surplus clothing and (b) wants exactly your rice in return. As the number of individuals and the variety of goods rise, the cost of searching for that one matching partner becomes prohibitive. Barter therefore breaks down in any economy more complex than a tiny village.
Money solves this problem by acting as an intermediate good universally acceptable to every party. People sell what they produce for money, and use that money to buy what they need. The two halves of any exchange need no longer be done together — and need no longer involve the same partner.
3.1.2 The Four Classical Functions
NCERT and standard economics textbooks list four core functions, traditionally divided into primary (the two essential roles) and secondary (the two derived roles).
The Four Functions of Money
Bloom: L2 Understand① Medium of Exchange (primary). Money is universally acceptable in exchange for goods and services. By being acceptable to both parties, it removes the requirement of a double coincidence of wants and slashes the cost of every transaction.
② Unit of Account / Measure of Value (primary). The value of all goods and services is expressed in monetary units. When we say a wristwatch costs ₹500, we mean it can be exchanged for 500 units of the rupee. This permits us to compute relative prices: if a pencil is ₹2 and a pen is ₹10, then a pen is worth 10 ÷ 2 = 5 pencils. Equivalently, a rupee is worth 1 ÷ 2 = 0.5 of a pencil or 1 ÷ 10 = 0.1 of a pen. If all prices in the economy rise — a general rise in the price level — the purchasing power? of money falls: each rupee buys less of every commodity.
③ Store of Value (secondary). Wealth can be carried into the future in the form of money. Compare this with rice — a perishable item, costly to store, requires plenty of space and a buyer when you wish to convert it. Money has none of these problems: it does not perish, storage costs are tiny, and it is acceptable to anyone. Caveat: for money to perform this function well its value (purchasing power) must be sufficiently stable. A high inflation rate erodes the value of money over time. Other assets — gold, land, houses, even bonds — can also store value, but they lack money's universal acceptability and instant convertibility.
④ Standard of Deferred Payments (secondary). Many contracts run into the future: a home loan to be repaid over 20 years, a worker's monthly salary, an EMI, an electricity bill, a tax dues notice. All of these are stated and settled in monetary units. Without a stable measuring rod, no rational long-term contract is possible.
📚 NCERT Definition
Money is anything that is generally accepted as a medium of exchange. Modern money is mostly fiat money — its value is not derived from the metal in it but from the legal guarantee of the issuing authority.
3.1.3 Evolution: From Cowries to UPI
Money has evolved through several stages, each correcting a weakness of the previous one.
Commodity Money
Cowrie shells, salt, cattle, grain. Useful items but bulky, perishable, and not divisible.
Metallic Money
Gold and silver coins. Durable, divisible, scarce — but heavy to carry in large amounts.
Paper / Fiat Money
Currency notes (₹ in India) — value comes from the State's legal guarantee, not from the paper.
Digital Money
Bank deposits, cards, wallets, UPI, central-bank digital currency (e₹). Cashless and instant.
Several countries are now consciously moving towards a less-cash, more-digital economy. A cashless society? is one where transactions happen via electronic transfers of digital money rather than physical notes and coins. India has invested heavily in this direction: Jan Dhan accounts (over 50 crore opened since 2014), Aadhaar-enabled payment systems, e-wallets, the National Financial Switch (NFS), the Unified Payments Interface (UPI) launched in 2016, and the digital rupee (CBDC) piloted from 2022. The penetration of mobile and smartphone usage has made financial inclusion realistic for large parts of rural India.
💡 NCERT Vignette — The Goldsmith and the Receipt
In a small village, people kept their gold with a goldsmith named Lala for safe-keeping. In return, Lala issued paper receipts. Over time, villagers stopped carrying gold and simply exchanged Lala's receipts among themselves. The paper receipts became money — a medium of exchange backed by trust in the issuer. This is exactly how modern paper money works: the State (via the central bank) is today's "Lala" — and your ₹500 note is today's "receipt".
LET'S EXPLORE — Spot the Function
Bloom: L3 Apply
For each situation below, identify which of the four functions of money is being illustrated:
- You buy a samosa for ₹15 at a roadside stall.
- You compare the price of two phones — one ₹18,000 and another ₹22,000 — to decide.
- You keep ₹5,000 in a bank fixed deposit for an emergency.
- Your father takes a 20-year home loan with a fixed monthly EMI of ₹40,000.
✅ Answer Key
(1) Medium of Exchange — money buys the samosa instantly. (2) Unit of Account / Measure of Value — prices are stated in rupees so we can compare. (3) Store of Value — money carried forward to a future need. (4) Standard of Deferred Payments — a future obligation expressed and settled in money.
3.2 Demand for Money — Why People Want to Hold Cash
The demand for money is a stock concept. It tells us how much money people want to hold at a particular point of time. Holding money has a benefit (instant liquidity) and a cost (the interest it could have earned if put in a fixed deposit or a bond). The trade-off between the two is what Keynes called liquidity preference?.
3.2.1 The Three Motives — Keynes's Liquidity Preference
NCERT (and Keynes) identify three motives for holding money. The first two are sometimes grouped together as the transaction-cum-precautionary demand; the third is the speculative demand.
| Motive | Why People Hold Money | Depends On |
|---|---|---|
| Transactions | Day-to-day buying — groceries, petrol, bus fares | Income (Y), Price level (P) |
| Precautionary | Unforeseen needs — accidents, hospital bills, sudden travel | Income (Y); cautious nature |
| Speculative | To gain from expected fall in bond prices (rise in interest rate) | Rate of interest (r), inversely |
3.2.2 The Transactions Motive
The principal motive for holding money is to carry out day-to-day transactions. Income is received at discrete moments (a monthly salary, a weekly wage), but expenditure happens almost continuously throughout the period. People therefore need a working balance to bridge the gap. NCERT works through a clean example: if you earn ₹100 on the first of each month and spend it evenly over 30 days, your balance falls smoothly from ₹100 to ₹0. Average cash holding = (100 + 0) ÷ 2 = ₹50, while you transact ₹100 worth of business in the month. Your average transactions demand for money is half your monthly income — that is, half the value of your monthly transactions.
📐 The Transactions Demand Equation
MTd = k · Twhere T is the total nominal value of transactions in unit time and k is a positive fraction. Equivalently,
v · MTd = T where v = 1/k is the velocity of circulation — the number of times each unit of money changes hands in unit period. In NCERT's two-person economy, money worth ₹100 supports transactions of ₹200 per month because each rupee is used twice — velocity v = 2.
Linking transactions to GDP, NCERT's equation (3.3) writes the transactions demand as MTd = k · P · Y where Y is real GDP and P is the price level. Two implications follow: (i) a rise in real income Y raises money demand; (ii) a rise in the price level P raises money demand. People simply need more rupees in their pocket to buy the same basket if prices have risen.
3.2.3 The Precautionary Motive
Households and firms also hold extra cash for unforeseen contingencies — illness, accidents, urgent travel, unanticipated guest expenses, last-minute opportunities. The amount held under this motive depends on income, the social security cover available, and the individual's degree of risk aversion. Like the transactions motive, precautionary demand rises with income.
3.2.4 The Speculative Motive
The third motive is more sophisticated. Wealth can be held either as money (zero interest) or as bonds (which pay interest but whose prices fluctuate inversely with the rate of interest). The price of a bond equals the present value of its future stream of payments — and present value falls when the discount rate (interest rate) rises. So bond prices and interest rates move in opposite directions.
📐 Speculative Demand for Money
MSd = (rmax − r) ÷ (r − rmin)where r is the current market rate and rmax, rmin are upper and lower limits. As r falls from rmax to rmin, MSd rises from 0 to infinity. Intuition: when r is high, everyone expects it to fall (so bond prices to rise) → people put their wealth in bonds → speculative money demand is low. When r is very low, everyone fears it will rise (so bond prices to fall) → people sell bonds and hold money → speculative demand is high.
At the extreme low end, when r equals rmin, every additional rupee of money supply is absorbed into idle balances without lowering the interest rate any further. This is the famous liquidity trap? — the speculative money demand becomes infinitely elastic and monetary policy loses its bite.
3.2.5 Total Demand for Money
📐 Aggregate Money Demand
Md = MTd + MSd = k · P · Y + (rmax − r) ÷ (r − rmin)Total demand for money is the sum of the transactions-cum-precautionary component (rises with P and Y) and the speculative component (falls with r). Higher real income or higher prices ⇒ more money demanded. Higher interest rates ⇒ less money demanded.
3.3 Supply of Money — The Four Measures
In a modern economy, money consists mainly of two things: (i) currency — notes and coins issued by the monetary authority — and (ii) bank deposits held by the public with commercial banks. The total stock of money in circulation among the public at a particular point of time is the money supply?. Like demand for money, supply too is a stock variable.
3.3.1 Currency: Notes and Coins
In India, currency notes are issued by the Reserve Bank of India under Section 22 of the RBI Act, 1934 — these include ₹2, ₹5, ₹10, ₹20, ₹50, ₹100, ₹200, ₹500 and (currently being phased) ₹2000 notes. Coins are minted and issued by the Government of India through the Mint (Mumbai, Kolkata, Hyderabad, Noida) under the Coinage Act, 2011.
The face value of a hundred-rupee note (₹100) far exceeds the cost of the cotton-and-polymer paper it is printed on. Why does anyone accept it for ₹100 worth of goods? Because every note carries the Governor's promise that the RBI will be responsible for giving the bearer purchasing power equal to that face value. Such notes (and coins) are called fiat money? — money that has no intrinsic value but is backed by State guarantee. They are also legal tender? — they cannot be refused by any citizen for the settlement of any debt.
3.3.2 Bank Deposits
Bank deposits are of two kinds:
- Demand deposits (DD) — savings and current accounts; payable on demand. Cheques drawn on these accounts are routinely accepted in payment. They are part of money supply.
- Time deposits (TD) — fixed deposits with a defined maturity (1 year, 5 years, etc.). They cannot be withdrawn at will without a penalty. They are part of broad money but not narrow money.
⚠ Cheques are NOT Legal Tender
Currency notes and coins must be accepted by anyone for any debt — that is what "legal tender" means. But a cheque drawn on a savings or current account can be refused by the recipient. So demand deposits, although part of money supply, are not legal tender.
3.3.3 The RBI's Four Measures: M1, M2, M3, M4
The RBI publishes four alternative measures of money supply, each broader (and less liquid) than the one before it.
Money Supply Hierarchy: M1 → M4
Bloom: L2 Understand📐 Definitions of Money Supply (RBI)
M1 = CU + DD + Other deposits with RBI (narrow money)M2 = M1 + Savings deposits with Post Office savings banksM3 = M1 + Net Time deposits with commercial banks (broad money / aggregate monetary resources)M4 = M3 + Total deposits with Post Office savings organisations (excluding National Savings Certificates)Where CU = currency (notes + coins) held by the public and DD = net demand deposits held by commercial banks. "Net" implies that interbank deposits are excluded.
M1 and M2 are narrow money; M3 and M4 are broad money. They are listed in decreasing order of liquidity — M1 is the most liquid (immediately spendable), M4 the least. M3 is the most commonly cited measure and is also called aggregate monetary resources.
3.3.4 How M1 and M3 Have Grown in India
NCERT's Appendix 3.2 traces the steady rise in India's narrow and broad money over the last three decades. From M3 of about ₹11.24 lakh crore in 1999–2000, broad money has crossed ₹272 lakh crore in 2024–25 — a 24-fold rise in a quarter-century, reflecting the deepening of India's banking system.
India's Broad Money (M3) Growth, 2000–2025 (₹ Lakh Crore)
Figure 3.1: M3 has grown nearly 24× since 1999–2000. Source: RBI Handbook of Statistics on the Indian Economy, 2024–25.
3.3.5 High-Powered Money / Monetary Base
From the perspective of money supply, the most important function of the central bank is the issuance of currency. The currency issued by the central bank — held either by the public or by commercial banks as reserves — is called high-powered money? (also: reserve money, monetary base, denoted H or M0). It is "high-powered" because every rupee of it can support several rupees of bank-created deposit money (we will see how in Part 2).
💡 Two Money-Creators
Money is created by a system of two institutions: (i) the central bank, which prints currency and is the sole issuer of high-powered money; and (ii) the commercial banks, which accept deposits and lend out part of those deposits, expanding deposit money many times over the original currency. We open this story in Part 2.
THINK ABOUT IT — Why M1 < M3?
Bloom: L4 Analyse
Look at NCERT's Table 3.4: in 2023–24, M1 was about ₹60.9 lakh crore while M3 was ₹249.4 lakh crore — a gap of nearly ₹188 lakh crore. (a) What single component is responsible for this gap? (b) Explain why this gap has been widening in absolute terms but narrowing as a percentage. (c) If a household shifts ₹1 lakh from a fixed deposit to a savings account, what happens to M1 and M3?
✅ Answer
(a) The difference is exactly the net time deposits with commercial banks (fixed deposits, recurring deposits) — these are in M3 but not in M1. (b) As the economy financialises, more savings move from cash and savings accounts into time deposits, swelling M3 faster than M1 in absolute rupees; but the share is fairly stable, hence the percentage gap is steady or narrowing slightly. (c) Shifting from FD → savings increases M1 (savings deposit is in M1) but leaves M3 unchanged (the same money was already in M3, just relabelled).
📋
Competency-Based Questions — Part 1
Case Study: Sneha earns ₹60,000 per month. She keeps ₹15,000 in her wallet and savings account for daily expenses, ₹10,000 in a savings account labelled "emergencies", and parks ₹35,000 in a 1-year fixed deposit hoping to earn 7% interest. The RBI announces that the repo rate has been cut from 6.5% to 6%, and bond prices in the market have risen.
Q1. Sneha's ₹15,000 working balance is best classified under which motive for holding money?
L3 ApplyAnswer: (B) — Money held to bridge the gap between income receipts and continuous daily spending is the textbook transactions motive (Keynes). The ₹10,000 emergency reserve is the precautionary motive; the FD is for interest earning, not money holding.
Q2. Of Sneha's holdings, which counts in M1 but NOT in M3?
L4 AnalyseAnswer: (D) — M3 = M1 + Net Time Deposits. Therefore everything inside M1 (currency + demand deposits + other deposits with RBI) is automatically inside M3. The fixed deposit is in M3 but not in M1. Sneha's M1 = ₹25,000 (cash + 2 savings accts); her M3 = ₹60,000 (M1 + ₹35,000 FD).
Q3. The RBI cuts the repo rate from 6.5% to 6%. Using the speculative-demand framework, explain what is likely to happen to (a) bond prices, (b) speculative demand for money, and (c) Sneha's incentive to keep more cash.
L5 EvaluateModel Answer: (a) Bond prices and interest rates move inversely. So a fall in r raises bond prices in the market — confirmed by the case study. (b) Speculative demand for money is also inversely related to r: as r falls, more people expect r to rise in future (causing future capital losses on bonds) and hence prefer to hold money rather than bonds. Speculative demand for money rises. (c) Sneha now earns less interest on FDs and faces the risk that bond prices may fall in future. She is more likely to keep additional cash idle (rising precautionary + speculative balance) rather than lock into bonds.
HOT Q. India is moving rapidly to digital payments — UPI alone settled ₹260 lakh crore in 2024–25. Critically evaluate: as India becomes "less-cash", will the RBI's traditional measure M1 become more relevant or less relevant? Suggest two ways the RBI can refine its money-supply definitions for a digital economy.
L6 CreateHint: M1 = Currency (CU) + Demand Deposits (DD) + Other RBI deposits. As cash shrinks, CU's share falls but DD's share rises (UPI runs off demand deposits). So M1's composition changes but its relevance grows. Refinement ideas: (1) Track digital wallet balances (PhonePe, Paytm, GPay) explicitly under DD-equivalent. (2) Include CBDC (digital rupee) as a separate component of M0/M1. (3) Publish a new "M1-digital" measure that excludes physical cash.
⚖️ Assertion–Reason Questions — Part 1
Options:
(A) Both A and R are true, and R is the correct explanation of A.
(B) Both A and R are true, but R is NOT the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
(A) Both A and R are true, and R is the correct explanation of A.
(B) Both A and R are true, but R is NOT the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
Assertion (A): A barter system requires a double coincidence of wants for exchange to take place.
Reason (R): In barter, both parties must want exactly what the other has to offer at the same time.
Answer: (A) — Both true and R is the correct explanation. The cost of finding a partner whose wants exactly match becomes prohibitive as the variety of goods and the number of agents rise — which is exactly why money was invented.
Assertion (A): Speculative demand for money is inversely related to the rate of interest.
Reason (R): Bond prices are positively related to the rate of interest, so a high interest rate makes bonds more attractive than money.
Answer: (C) — A is true but R is false. Bond prices and interest rates move inversely, not positively. The correct chain: high r → people expect r to fall in future → bond prices to rise → capital gain on bonds → people convert money into bonds → speculative demand for money is low.
Assertion (A): M3 is the most commonly used measure of money supply in India.
Reason (R): M3 includes net time deposits with commercial banks in addition to M1 and is a measure of broad money or aggregate monetary resources.
Answer: (A) — Both true; R explains A. M3 captures the bulk of "useable" liquidity in the banking system without being as restrictive as M1 or as broad as M4 (which adds Post Office savings deposits).
Frequently Asked Questions
What are the four functions of money in NCERT Class 12?
NCERT Class 12 lists four functions of money. As a medium of exchange, money removes the inefficiency of barter and lets buyers and sellers trade without needing a double coincidence of wants. As a store of value, money lets people save purchasing power for future use. As a unit of account, money provides a common scale to express prices and contracts. As a standard of deferred payment, money lets buyers and sellers settle debts in the future at known nominal terms. All four functions together make money the hinge of modern macroeconomics.
What is the transaction demand for money?
The transaction demand for money is the amount of money individuals and firms hold to make day-to-day purchases between two pay-days. NCERT Class 12 shows that transaction demand depends positively on the level of nominal income (a richer country needs more cash to settle bigger transactions) and inversely on the velocity of circulation. The textbook formula is M_T = (1/v) × PY, where v is velocity, P is price level and Y is real income.
What is the speculative demand for money in NCERT Class 12?
The speculative demand is the amount of money people hold as an alternative to holding bonds. When the rate of interest is high, people expect bond prices to fall, so they hold less speculative money and more bonds. When the rate of interest is low, they expect bond prices to rise, so they hold more money and fewer bonds. The speculative demand for money is therefore inversely related to the rate of interest — a downward-sloping curve in the M–r diagram.
What are M1, M2, M3 and M4 in the RBI's measures of money supply?
The RBI uses four progressively broader measures. M1 = currency with the public + demand deposits with banks + other deposits with the RBI; it is the narrow measure of money. M2 = M1 + savings deposits with post offices. M3 = M1 + time deposits with banks; it is the broad money measure used as the official aggregate. M4 = M3 + total post office deposits (excluding NSC). NCERT Class 12 emphasises that M1 and M3 are the most important for policy and exam purposes.
Why is money called the hinge of modern macroeconomics?
Without money, every transaction would require barter, which fails when buyers and sellers do not want each other's goods (the double-coincidence problem). Money makes specialisation and trade possible, lets contracts be written in clear units, lets savings be carried forward and lets the central bank steer the economy by changing the money supply. Almost every macro variable in NCERT Class 12 — income, output, inflation, exchange rate — ultimately depends on the quantity and price of money, which is why Chapter 3 follows immediately after national-income accounting.
Is money supply controlled by the RBI alone?
No, money supply is the joint product of the central bank and the commercial banking system. The RBI directly controls the monetary base or high-powered money (currency in circulation plus banker reserves). Commercial banks then expand this base into a much larger money supply through the deposit-creation process explained in Part 2. The RBI uses the cash reserve ratio, statutory liquidity ratio, repo rate and open-market operations to influence — not perfectly control — how much M3 the system finally produces.
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