Money, Banking & Inflation

📘 CDS Economics · ECC04 📑 CDS Level : High Priority

Money, Banking & Inflation is among the most-tested CDS economics chapters. RBI’s monetary policy tools — Repo Rate, Reverse Repo, CRR, SLR — appear in almost every CDS paper. Know the exact direction of each tool’s effect on money supply and inflation.

📌 CDS Pattern: Money supply components (M1/M2/M3) • Repo vs Reverse Repo • CRR vs SLR distinction • Demand-pull vs Cost-push inflation • CPI vs WPI • RBI’s functions

1. Money & Its Functions

Functions of Money (4 primary): (1) Medium of Exchange (eliminates barter inefficiency — double coincidence of wants). (2) Unit of Account (common measure of value). (3) Store of Value (preserves purchasing power over time). (4) Standard of Deferred Payment (enables credit transactions).
Barter System Problem: Requires “double coincidence of wants” — both parties must want what the other has. Money solves this.
Money Supply (M1, M2, M3, M4):
- M1 (Narrow Money): Currency in circulation + Demand Deposits with banks + Other deposits with RBI. Most liquid.
- M2 = M1 + Savings deposits with Post Office Savings Banks.
- M3 (Broad Money): M1 + Time Deposits with banks. Most commonly used policy measure. Also called “aggregate monetary resources.”
- M4 = M3 + All deposits with Post Office Savings Banks. Least liquid.

2. RBI & Monetary Policy Tools

Repo Rate (6.25% as of Feb 2025): Rate at which RBI lends short-term money to commercial banks against government securities. If Repo rises → banks’ borrowing costs rise → loans become expensive → credit contracts → inflation controlled.
Reverse Repo Rate (3.35%): Rate at which RBI borrows from commercial banks (banks park surplus funds with RBI). If Reverse Repo rises → banks earn more by keeping money with RBI → less credit to public → money supply falls.
CRR (Cash Reserve Ratio = 4.0%): % of total deposits that commercial banks must keep as cash with RBI. If CRR rises → banks hold more cash with RBI → less money to lend → money supply falls.
SLR (Statutory Liquidity Ratio = 18.0%): % of deposits banks must keep in liquid assets (gold, government securities, cash). If SLR rises → less money available for loans → credit contracts.
Open Market Operations (OMO): RBI buys/sells government securities in open market. RBI buys securities → injects money → money supply rises (expansionary). RBI sells securities → absorbs money → money supply falls (contractionary).
Bank Rate: Rate at which RBI lends to banks for longer periods (no collateral). Different from Repo Rate. Currently aligned with Repo Rate.
Qualitative Tools: Margin Requirements (% of loan value borrower must bring), Moral Suasion (RBI advises/persuades banks), Credit Rationing.

⚠ Key Distinction: Repo Rate = RBI lends TO banks (short-term, with collateral). Reverse Repo Rate = RBI borrows FROM banks. Bank Rate = RBI lends to banks (long-term, no collateral). CDS tests all three together.

3. Inflation

Inflation: Sustained rise in the general price level. Reduces purchasing power of money.
Demand-Pull Inflation: “Too much money chasing too few goods.” Caused by excessive demand (government spending, easy credit). During boom/prosperity phase.
Cost-Push Inflation: “Supply shock.” Caused by rising production costs (oil prices, wages, raw materials). Results in stagflation (inflation + unemployment together) in extreme cases.
CPI (Consumer Price Index): Measures change in retail prices of a basket of goods and services consumed by households. RBI’s official inflation target = 4% CPI (±2%). Captures actual cost of living. Urban CPI + Rural CPI → Combined CPI.
WPI (Wholesale Price Index): Measures price change at wholesale/producer level. Covers 697 commodity items. Ministry of Commerce & Industry. Not used by RBI for policy (CPI is). WPI reflects factory-gate prices.
Effects of Inflation: Debtors benefit (repay in cheaper money); Creditors/savers lose (receive cheaper money back); Fixed income earners suffer (purchasing power falls); Exporters benefit (goods become relatively cheaper globally).

📝 CDS PYQMoney, Banking & Inflation — CDS Pattern

Q1. If the RBI increases the Repo Rate, what is the expected impact on the economy? (CDS I 2024)

(a) Money supply increases, inflation rises (b) Cost of borrowing falls, investment rises (c) Cost of borrowing rises, inflation is controlled (d) Banks reduce interest rates for customers

Answer: (c) Cost of borrowing rises, inflation is controlled
Repo Rate up → RBI charges banks more for loans → banks charge customers more → loans expensive → borrowing falls → spending/investment falls → demand contracts → inflation controlled. This is contractionary monetary policy. Feb 2025: RBI CUT repo rate (first time since May 2020) from 6.5% to 6.25% — expansionary signal.

Q2. CRR stands for Cash Reserve Ratio. If the RBI increases CRR, what happens? (CDS II 2023)

(a) Banks have more funds to lend; money supply rises (b) Banks must keep more with RBI; money supply falls (c) Banks earn more interest from RBI (d) Government borrowing increases

Answer: (b) Banks must keep more cash with RBI; money supply falls
CRR (currently 4%): Banks must keep this % of their total deposits as cash with RBI — earns NO interest. If CRR rises to 5%, banks have 1% less to lend. Multiplied across all banks = significant reduction in money supply. Opposite: RBI cuts CRR → releases liquidity → more lending → money supply rises.

Q3. Which of the following measures inflation at the consumer/retail level and is used by RBI for monetary policy targeting? (CDS I 2023)

(a) WPI (b) CPI (c) GDP Deflator (d) PPI (Producer Price Index)

Answer: (b) CPI (Consumer Price Index)
Since 2016, RBI uses CPI as the official inflation target (flexible inflation targeting framework under Urjit Patel committee recommendations). Target: 4% (±2%). CPI reflects actual retail prices paid by consumers. WPI = wholesale/producer level; GDP Deflator = all goods in economy; India does not officially publish PPI separately.

Q4. Which component of money supply is considered the broadest and most commonly used by RBI for monetary analysis? (CDS II 2022)

(a) M1 (b) M2 (c) M3 (d) M4

Answer: (c) M3 (Broad Money)
M3 = M1 + Time Deposits with banks. M3 is called “aggregate monetary resources” and is the most comprehensive measure of money supply used by RBI for policy analysis. M1 = most liquid (narrow money). M4 = least liquid. M3 growth rate is watched as an indicator of potential inflation.

Q5. When inflation rises, who among the following benefits? (CDS I 2022)

(a) Fixed income earners (b) Creditors (lenders) (c) Debtors (borrowers) (d) Pensioners

Answer: (c) Debtors (borrowers)
Inflation erodes the real value of money. Debtors borrowed money in “expensive” rupees; they repay in “cheaper” (inflated) rupees → benefit. Creditors lent “expensive” rupees and get back “cheaper” ones → lose real value. Fixed income earners (government workers, pensioners) → their nominal income is fixed but prices rise → purchasing power falls → they suffer.

📝 Rapid Revision — ECC04

🏭 RBI Tools (Current Values)

Repo Rate: 6.25% (cut Feb 2025; first since May 2020)
Reverse Repo: 3.35%
CRR: 4.0% (cut Dec 2024)
SLR: 18.0%
RBI Governor: Sanjay Malhotra (Dec 2024)

📈 Monetary Policy Logic

Repo up → credit contracts → inflation controlled
CRR up → less to lend → money supply falls
SLR up → less to lend → credit contracts
OMO: RBI buys → money supply rises
OMO: RBI sells → money supply falls

📊 Money Supply

M1 = Currency + Demand Deposits (most liquid)
M3 = M1 + Time Deposits (broad money; RBI uses)
M4 = M3 + Post Office deposits (least liquid)

🚫 CDS Traps

Repo = RBI lends TO banks (not RBI borrows)
Reverse Repo = RBI borrows FROM banks
CPI = RBI inflation target (NOT WPI)
Debtors BENEFIT from inflation (NOT creditors)
CRR earns NO interest for banks

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