1. From barter to money
- Barter is the direct swapping of goods. Its difficulties: need for a double coincidence of wants; no common measure of value; indivisibility of goods; no store of value for perishables; no fair standard for future payments.
- Money is anything generally accepted in payment for goods and services and in settling debts.
- Money evolved from commodities (grain, cattle, salt) to metal coins, paper notes and bank deposits.
| Difficulty of barter | What goes wrong (imagined haat) |
|---|---|
| Double coincidence of wants | The potter wants rice; the rice grower wants sandals, not pots |
| No common measure of value | How many pots equal one goat? A new rate for every swap |
| Indivisibility | A goat cannot be split to buy a small sack of salt |
| No store of value | Fish and vegetables rot before they can be traded |
| No standard of deferred payment | A loan of rice repaid in rice may differ in quality |
Key terms
- Barter
Direct exchange of goods for goods without money.
- Double coincidence of wants
Each party to a swap must want what the other offers.
- Money
Anything generally accepted as a means of payment and in settlement of debts.
2. Kinds of money
- Commodity money: a useful good used in payment.
- Metallic money: full-bodied coins (metal worth = face value) and token coins (face value above metal worth).
- Paper money: notes; modern notes are inconvertible (not exchangeable for gold on demand).
- Credit (bank) money: deposits moved by cheque or transfer.
- Legal tender: must be accepted in payment of debts — unlimited (notes) or limited (small coins, up to a legal limit). Cheques are optional money.
- Fiat money: issued by government order; value does not come from its material.
- Near money: highly liquid assets (fixed deposits, treasury bills, bonds) that must first be turned into money.
| Kind | Meaning | Imagined example |
|---|---|---|
| Commodity money | A useful good accepted in payment | Salt bars used to buy cloth |
| Full-bodied coin | Metal worth equals face value | An old silver coin worth its silver |
| Token coin | Face value above metal worth | A ₹5 coin with metal worth far less |
| Paper money | Notes issued by the monetary authority | Currency notes in a wallet |
| Credit (bank) money | Deposits moved by cheque or transfer | A trader paying a supplier by cheque |
| Term | Meaning | Example |
|---|---|---|
| Unlimited legal tender | Must be accepted for any amount | Currency notes |
| Limited legal tender | Must be accepted only up to a legal limit | Small coins |
| Optional (non-legal-tender) money | May be refused | Cheques, drafts |
| Fiat money | Money by government order; value not from its material | Modern notes and coins |
| Money | Near money | |
|---|---|---|
| Used directly to pay for goods? | Yes | No |
| Liquidity | Perfect | High, but must first be turned into cash |
| Examples (imagined family) | Cash, current-account balance | Fixed deposit, treasury bill, bond |
Key terms
- Token money
Money whose face value exceeds the value of its material.
- Legal tender
Money that must by law be accepted in payment of debts.
- Fiat money
Money issued by order of the government, whose value does not depend on its material.
- Near money
A highly liquid asset that is not itself a means of payment.
3. Functions of money
- Primary: medium of exchange (sale and purchase become separate deals); measure of value (common unit of account).
- Secondary: standard of deferred payments (loans fixed in money); store of value (purchasing power kept for later — weakened when prices rise fast); transfer of value (between places and people).
- Contingent: basis of credit; distribution of national income as wages, rent, interest and profit; equalising marginal utilities in spending; liquidity; guarantor of solvency.
| Primary function | What it does | Imagined example |
|---|---|---|
| Medium of exchange | Splits a swap into a sale and a purchase | A weaver sells a saree, then buys yarn |
| Measure of value | Expresses all values in one unit | A dairy records milk, fodder and wages in rupees |
| Secondary function | What it does | Imagined example |
|---|---|---|
| Standard of deferred payments | Future payments fixed in money | A seed loan repaid in rupees after harvest |
| Store of value | Holds purchasing power for later | A vendor saves money, not tomatoes |
| Transfer of value | Moves purchasing power between places or people | Selling a house in Bihar to buy a flat in Bengaluru |
| Contingent function | Meaning |
|---|---|
| Basis of credit | Loans and deposits are claims to money |
| Distribution of national income | Output is shared as wages, rent, interest and profit in money |
| Equalising marginal utilities | Spending can be spread so each rupee gives similar satisfaction |
| Liquidity | Money is the most liquid asset |
| Guarantor of solvency | Holding money shows ability to pay debts |
Key terms
- Medium of exchange
The role of money as what is given and taken in buying and selling.
- Standard of deferred payments
The role of money as the unit in which future payments are fixed.
- Contingent functions
Functions of money that arise in a developed economy with banks and markets.
4. Money supply: M0 to M4 (meanings)
- Money supply: the stock of money held by the public at a point of time; money with the government and the banking system is excluded.
- M0 (reserve or high-powered money) = currency in circulation + bankers' deposits with the RBI + other deposits with the RBI.
- M1 = currency with the public + demand deposits of banks + other deposits with the RBI.
- M2 = M1 + savings deposits with post office savings banks.
- M3 = M1 + net time deposits of banks.
- M4 = M3 + total deposits with the post office savings organisation (excluding National Savings Certificates).
- M1, M2: narrow money; M3, M4: broad money. Liquidity is highest in M1 and lowest in M4.
| Measure | Meaning | Type |
|---|---|---|
| M1 | Currency with the public + demand deposits of banks + other deposits with the RBI | Narrow money |
| M2 | M1 + savings deposits with post office savings banks | Narrow money |
| M3 | M1 + net time deposits of banks | Broad money |
| M4 | M3 + total deposits with the post office savings organisation (excluding National Savings Certificates) | Broad money |
| Reserve money (M0) = | Meaning |
|---|---|
| Currency in circulation | Notes and coins with the public and in bank tills |
| Bankers' deposits with the RBI | Banks' reserves kept with the central bank |
| Other deposits with the RBI | Deposits of some institutions with the central bank |
Key terms
- Money supply
The total stock of money held by the public at a point of time.
- Reserve money
The monetary base: currency in circulation plus deposits of banks and others with the central bank.
- Broad money
Measures such as M3 and M4 that include less liquid time and savings deposits.
5. Inflation and its measurement
- Inflation: a sustained rise in the general price level, so money loses purchasing power.
- Price index = cost of a fixed basket now ÷ cost in the base year × 100.
- Rate of inflation = (rise in the index) ÷ (earlier index) × 100.
- Purchasing power of ₹1 = 100 ÷ price index; real value of an amount = amount × 100 ÷ index.
- Imagined Sonapur: 125 → 135 → 148.5 gives 8% and then 10%; a rupee at index 125 buys ₹0.8 of base-year goods.
- Imagined Meghpur: a basket costing ₹4,000 now costs ₹4,600 (index 115, a 15% rise); a salary of ₹46,000 is worth ₹40,000 in base-year rupees.
| Idea | Meaning |
|---|---|
| Inflation | A sustained rise in the general price level |
| Price index | Cost of a fixed basket now ÷ cost in the base year × 100 |
| Rate of inflation | (Index this year − index last year) ÷ index last year × 100 |
| Purchasing power of ₹1 | 100 ÷ price index (in base-year rupees) |
Key terms
- Inflation
A sustained rise in the general level of prices.
- Price index
A number showing the cost of a fixed basket relative to a base year taken as 100.
- Purchasing power of money
The quantity of goods a unit of money can buy.
6. Demand-pull and cost-push inflation
- Demand-pull: aggregate demand exceeds full-employment output. Causes: rise in money supply and easy credit, higher public spending (especially deficit financing), higher disposable income (tax cuts), rising exports, growing population.
- Cost-push: rising costs raise prices without more demand. Types: wage-push, profit-push, dearer inputs or imports (fuel, raw materials), higher indirect taxes.
- Demand-pull usually appears at full employment; cost-push can appear with idle capacity and may reduce output.
- Diagrams of both types are not required for ISC 2027; explain them in words.
| Point | Demand-pull | Cost-push |
|---|---|---|
| Starts from | Excess aggregate demand | Rising costs of production |
| Typical causes | Money supply, public spending, income, exports | Wages, input prices, margins, indirect taxes |
| Output | Usually at full employment; output cannot rise | Can occur with idle capacity; output may fall |
| Type of cost-push | Imagined example |
|---|---|
| Wage-push | Factory wages rise far faster than output per worker |
| Profit-push | A few dominant cement firms widen their margins |
| Input or import costs | Imported diesel and fertiliser double in price |
| Indirect taxes | A higher tax on goods raises their price at the shop |
Key terms
- Demand-pull inflation
Inflation caused by aggregate demand exceeding the economy's full-employment output.
- Cost-push inflation
Inflation caused by rising costs of production.
- Deficit financing
Meeting a government deficit by borrowing from the central bank, which creates new money.
Exam tips
Common mistakes
- Treating a cheque as legal tender.
- Calling a fixed deposit money instead of near money.
- Putting store of value among the primary functions.
- Writing M3 as M2 plus time deposits (it is M1 plus net time deposits).
- Taking the rise in index points as the rate of inflation.
- Calling a one-time rise in one price "inflation".
How marks are usually awarded
- 1 mark: one correct option, term or calculation.
- 2 marks: a meaning with an example, or two short points.
- 3 marks: three distinct points, or a calculation in three steps.
- 5 marks: parts with working and reasons; scenario answers must use the scenario.
All towns, families and figures in SOYL practice are imagined; no current statistics are used.