Money: ISC Class 12 Economics Notes on Functions, Money Supply and Inflation

What Money is about

Weightage: Money is part of the unit Money and Banking, which carries 8 of the 80 theory marks, shared with 1 other chapter. Questions on it can appear in any section of the paper.Source: CISCE ISC Economics syllabus, examination year 2027, distribution of marks

Key concepts

Meaning of money and the problems of barter

Money is anything that is widely accepted as a medium of exchange, a measure of value, a store of value and a means of settling debts.

Difficulties of barter that money removes:

• Lack of double coincidence of wants: the person who has what you want must want what you have.
• No common measure of value: every good has many exchange ratios.
• Indivisibility: a cow cannot be divided to buy a small item.
• Difficulty of storing wealth: goods perish or lose value.
• No standard for deferred payments: future payments in goods cause disputes over quality.

Money is not wealth in itself but a claim on goods and services.

Worked example

Suppose a potter wants rice, but the rice farmer wants a pair of shoes, not pots. Name the barter problem and explain how money solves it. [2 marks]

Try it first, then show the solutionSolution

1. Lack of double coincidence of wants.
2. With money the potter sells pots to anyone for money and buys rice with it; the farmer can buy shoes with the money he receives.

Answer: Money as a medium of exchange separates buying from selling.

Kinds of money

• Commodity money: goods used as money (grain, cattle, shells).
• Metallic money: coins; full-bodied (face value = metal value) or token (face value > metal value).
• Paper money: currency notes issued by the central bank; usually fiat money (money by government order, not backed by gold).
• Credit (bank) money: demand deposits with banks, transferable by cheque; it is created by banks.
• Legal tender money: must be accepted in settlement of debts by law; unlimited (₹ notes) or limited (small coins up to a limit). Optional (non-legal tender) money: may be refused (cheques, drafts).
• Plastic and digital money: debit and credit cards, UPI transfers, e-wallets (claims on bank money).
• Near money: highly liquid assets not used directly for payment (time deposits, treasury bills).

Worked example

Suppose a shopkeeper refuses to accept a cheque but must accept a ₹500 note. Explain why. [2 marks]

Try it first, then show the solutionSolution

1. A ₹500 note is legal tender: it must be accepted in settlement of payments by law.
2. A cheque is optional money: acceptance depends on trust in the payer and his bank.

Answer: Notes are legal tender; cheques are optional money.

Functions of money: primary, secondary and contingent

Primary (main) functions

• Medium of exchange: money is accepted in exchange for goods and services, removing the need for double coincidence of wants.
• Measure (unit) of value: the values of all goods are expressed in money (prices), making comparison and accounting possible.

Secondary functions

• Store of value: wealth can be held in money without perishing.
• Standard of deferred payments: future payments (loans, salaries) are stated in money.
• Transfer of value: value can be moved from place to place and person to person.

Contingent functions

• Basis of credit: cheques, drafts and bank credit rest on money.
• Distribution of national income among factors as rent, wages, interest and profit.
• Equalising marginal utilities (consumers) and marginal productivities (producers) by allocating spending through money prices.
• Liquidity: money is the most liquid asset.
• Guarantor of solvency: money balances let firms meet obligations.

Worked example

Suppose a worker takes a two-year loan today and repays it in monthly instalments fixed in rupees. Which function of money is involved? [1 mark]

Try it first, then show the solutionSolution

1. Payments due in the future are expressed in money.

Answer: Standard of deferred payments (a secondary function).

Supply of money: M0, M1, M2, M3, M4 (meaning only)

The supply of money is the total stock of money held by the public (households and firms, other than banks and government) at a point of time.

Measure	Components (RBI definitions)	Liquidity
M0 (reserve money)	Currency in circulation + bankers' deposits with RBI + other deposits with RBI	Base of money supply
M1 (narrow money)	Currency with the public + demand deposits with banks + other deposits with RBI	Most liquid
M2	M1 + savings deposits with post office savings banks	Less liquid than M1
M3 (broad money)	M1 + net time deposits with banks	Less liquid
M4	M3 + total deposits with post office savings organisations (excluding National Savings Certificates)	Least liquid

• Demand deposits can be withdrawn on demand (current and savings deposits with banks; the demand part).
• Time deposits (fixed and recurring deposits) are repayable after a fixed period, so they are in M3, not in M1.
• Other deposits with RBI include deposits of quasi-government bodies and foreign central banks.
• M1 and M2 are narrow money; M3 and M4 are broad money. M3 is the most commonly used measure (aggregate monetary resources).
• National Savings Certificates are excluded from M4.

Worked example

Suppose (₹ thousand crore) currency with the public is 30, demand deposits with banks 25, other deposits with RBI 1, net time deposits with banks 140, post office savings bank deposits 10 and other post office deposits 15. Calculate M1, M2, M3 and M4. [2 marks]

Try it first, then show the solutionSolution

1. M1 = 30 + 25 + 1 = 56.
2. M2 = M1 + 10 = 66; M3 = M1 + 140 = 196; M4 = M3 + 10 + 15 = 221.

Answer: M1 = 56; M2 = 66; M3 = 196; M4 = 221 (₹ thousand crore).

Inflation: meaning, demand-pull and cost-push

Inflation is a persistent (sustained) rise in the general price level over a period, which reduces the purchasing power of money. It is not a one-time rise in the price of a few goods.

Demand-pull inflation: caused by excess aggregate demand over aggregate supply at full employment: too much money chasing too few goods. Causes: rise in money supply and bank credit, higher government spending (deficit financing), rise in disposable income, rise in exports.

Cost-push inflation: caused by a rise in the cost of production that producers pass on as higher prices, even without excess demand. Causes: higher wages (wage-push, for example statutory wage increases), rise in prices of raw materials and fuel (oil prices), higher indirect taxes, higher profit margins of firms with market power (profit-push).

Diagrams are not required by the syllabus.

Worked example

Suppose global crude oil prices double and transport and power costs rise across industries, lifting prices generally. Identify the type of inflation and give the reason. [1 mark]

Try it first, then show the solutionSolution

1. The rise starts from higher input costs that firms pass on, not from higher spending.

Answer: Cost-push inflation: higher input (fuel) costs push up prices.

Money in real life

Each concept, met in an everyday situation. Read the situation, answer the question in your own words, then compare with the model answer. The one-line hook is what to remember.

Topics in this chapter

• Inflation: Meaning, Demand-Pull and Cost-Push

Money: key facts

M1

Currency with the public + demand deposits with banks + other deposits with RBI

M2

M1 + savings deposits with post office savings banks

M3

M1 + net time deposits with banks

M4

M3 + total deposits with post office savings organisations (excluding NSCs)

M0

Currency in circulation + bankers' deposits with RBI + other deposits with RBI

How the board asks Money

The question patterns to expect, and the method that works for each.

Tricks to remember Money

Short memory aids. Say each one aloud once, then use it on a question the same day.

• Primary functions: "Medium and Measure"

  Two Ms: Medium of exchange, Measure of value. Secondary: Store, Standard, Transfer.

  Use it when: Classifying functions.

• M ladder

  M1 = cash + demand deposits (+ other RBI deposits); add post office savings for M2; add bank time deposits for M3; add all post office deposits for M4.

  Use it when: Money supply measures.

Money: board-level solved questions

Ordered from board level to HOTS. Cover the solution, write your own, then compare step by step.

Case-study practice (Section C style)

Read the situation, then answer every part. In the board paper this is a 6-mark question split into 2 + 1 + 2 + 1 marks.

Where the marks are

How a typical answer is split into step marks. Show every step: a right final answer alone rarely earns full marks.

Where students lose marks in Money

The slips examiners see most often, and what to write instead.

• ✗Mistake: Wrong components of money supply measures

  CISCE examiners' comments, 2025: "Most candidates could not identify the correct components of the measures of money supply".

  ✓Do this: Learn the measures as a ladder by liquidity, in words, not only as abbreviations.

  Usually costs: 1 mark.

• ✗Mistake: Explaining cost-push as demand-pull

  CISCE examiners' comments, 2025: "Explained that higher wages raise income and demand, which is the demand-pull explanation rather than cost-push".

  ✓Do this: For cost-push, start from higher costs of production being passed on in prices.

  Usually costs: 1 mark.

• ✗Mistake: Functions named without explanation

  A list of functions does not earn the explanation mark; the examiner expects each function explained with an example.

  ✓Do this: Name, define in one line, and add a short example.

  Usually costs: ½-1 mark per function.

• ✗Mistake: Calling any price rise inflation

  Inflation is a sustained rise in the general price level, not a seasonal rise in a few prices.

  ✓Do this: Use "persistent" or "sustained" and "general price level" in the definition.

  Usually costs: ½ mark.

Practice questions on Money

Write each answer on paper first. Open the hint only if you are stuck, and the answer only when you have finished.

1. Q1 · 1 mark · MCQBoard level

   Which is a primary function of money?
   (a) Store of value
   (b) Medium of exchange
   (c) Basis of credit
   (d) Transfer of value

   Hint

   Main function.

   Answer

   (b)

2. Q2 · 1 mark · Very short answerBoard level

   What is fiat money?

   Hint

   By order.

   Answer

   Money issued by government order (such as paper currency), not backed by any commodity.

3. Q3 · 1 mark · Very short answerHarder board level

   Give two contingent functions of money.

   Hint

   Credit and distribution.

   Answer

   Basis of credit; distribution of national income (also equalising marginal utilities, liquidity).

4. Q4 · 1 mark · Very short answerHarder board level

   Why are fixed deposits not part of M1?

   Hint

   Liquidity.

   Answer

   They can be withdrawn only after a fixed period, so they are not directly usable as a medium of exchange.

5. Q5 · 2 marks · Short answerBoard level

   Distinguish between legal tender and optional money with examples.

   Hint

   Law.

   Answer

   Legal tender must be accepted by law (currency notes and coins); optional money may be refused (cheques, drafts).

6. Q6 · 2 marks · Short answerHOTS / competency

   Explain how money helps equalise marginal utilities.

   Hint

   Spending choices.

   Answer

   Because all goods are priced in money, a consumer can compare MU per rupee and allocate spending so that the last rupee on each good gives equal utility.

7. Q7 · 2 marks · Short answerHOTS / competency

   Inflation is a "tax on money holders". Explain.

   Hint

   Purchasing power.

   Answer

   Rising prices reduce what each rupee can buy, so people holding cash or fixed money claims lose purchasing power, as if taxed.

8. Q8 · 2 marks · Short answerHarder board level

   State two causes of demand-pull inflation.

   Hint

   Demand side.

   Answer

   Rapid growth of money supply and bank credit; large government deficit spending (also rising incomes, export boom).

Test your recall

Answer in your head or on paper first, then open the card. Pulling an answer out of memory makes it stick far better than re-reading.

1. 1.Most liquid measure of money supply?Show answer

   M1.

2. 2.What does M3 add to M1?Show answer

   Net time deposits with banks.

3. 3.Two primary functions of money?Show answer

   Medium of exchange and measure of value.

4. 4.Cost-push inflation arises from?Show answer

   Rising costs of production.

Quick revision checklist

The night before the exam: can you do each of these without looking?

• ☐Money: generally accepted medium of exchange and measure of value.
• ☐Primary: medium, measure. Secondary: store, standard of deferred payments, transfer.
• ☐M1 = currency with public + demand deposits + other RBI deposits.
• ☐M3 = M1 + net time deposits; M4 = M3 + all post office deposits (not NSCs).
• ☐Inflation: sustained rise in general prices; demand-pull or cost-push.

Money: frequently asked questions