Inflation & Monetary Policy

Inflation & Monetary Policy

Concept Explanation

Let me break this down practically — because the exam will test not just definitions but your ability to reason about what RBI should do in a given situation.

What is inflation, really?

Inflation is too much money chasing too few goods — or more practically, a sustained increase in the general price level over time. For you as a citizen, it means your ₹100 note buys less every year. For RBI, it means the purchasing power of the rupee is eroding — which undermines savings, investment, and economic planning.

India measures inflation primarily through two indices: CPI and WPI.

CPI (Consumer Price Index) — what you pay:

CPI measures the change in the retail price of a basket of goods and services that a typical consumer buys. This is what actually matters to households — the price of vegetables at the sabzi mandi, the cost of your child’s school fees, your electricity bill. That’s why RBI uses CPI as its official inflation target.

CPI is composed of:

• Food and Beverages (~39.5% weight)
• Housing (~10%)
• Fuel and Light (~7%)
• Clothing and Footwear (~6%)
• Transport and Communication (~8%)
• Education (~4%)
• Medical Care (~6%)
• and others

CPI inflation in India has been running above RBI’s 4% target for much of 2023-24 and 2024 — primarily driven by food prices (tomato prices, onion prices, pulses). In October 2024, CPI inflation was 4.9%, with food inflation at 6.2%.

WPI (Wholesale Price Index) — what businesses pay:

WPI measures price changes at the wholesale or factory-gate level — before goods reach the retail consumer. It covers three major groups:

• Primary Articles (~22%): food articles, non-food articles, minerals
• Fuel and Power (~13%): coal, crude oil, natural gas
• Manufactured Products (~64%): textiles, chemicals, machinery, metal products

WPI is useful as a leading indicator — if wholesale prices rise, those costs eventually pass through to retail prices. WPI was in deflation (negative) for much of 2023-24 — in October 2024, WPI inflation was -2.6%. This CPI-WPI divergence is important: WPI can be negative while CPI remains positive, because CPI includes services (rent, education, healthcare) and retail markups that WPI doesn’t capture.

RBI’s inflation targeting framework:

In 2016, India formally adopted an inflation targeting framework through a amendment to the RBI Act, 1935 (via the Finance Act, 2016). Under this framework:

• Target: 4% CPI inflation
• Band: ±2% (so the acceptable range is 2-6%)
• Horizon: The target is for CPI inflation averaged over the year
• Duty: RBI must try to achieve the target; if it misses for 3 consecutive quarters, RBI must publicly explain to the government

The Monetary Policy Committee (MPC) sets the repo rate. It has 6 members: 3 from RBI (including the Governor as Chairman) and 3 external members appointed by the government. Decisions are taken by majority vote, and the MPC meets 6 times a year (bi-monthly).

Key policy rates you must know:

The RBI’s rate corridor system works as follows:

• Repo Rate (6.5%): The rate at which banks borrow from RBI by selling government securities with an agreement to repurchase them the next day. This is the main policy rate.
• Reverse Repo Rate (3.35%): The rate at which RBI pays banks to park excess reserves. Maintained at repo rate minus 3.15 percentage points.
• MSF Rate (6.75%): The Marginal Standing Facility rate — banks can borrow up to 2% of their NDTL (Net Demand and Time Liabilities) from RBI at repo rate + 25 basis points. This is the upper bound of the corridor.
• Bank Rate (6.75%): The rate at which RBI discounts bills of exchange and advances against government securities. Officially aligned with MSF since 2016.
• CRR (4.5%): Cash Reserve Ratio — every bank must hold 4.5% of its NDTL as cash reserves with RBI (not earning interest).
• SLR (18%): Statutory Liquidity Ratio — banks must hold 18% of NDTL in government securities, T-bills, and other approved securities.

How does repo rate affect your loan EMI?

This is the transmission mechanism, and it’s critical for the exam:

RBI changes repo rate → This changes banks’ cost of borrowing from RBI → Banks adjust their MCLR (Marginal Cost of Funds based Lending Rate) → MCLR change flows through to your loan’s interest rate → Your EMI changes.

In practice, transmission is not perfect or immediate. It can take 3-6 months for a repo rate change to affect your loan rate, depending on when your bank’s MCLR resets. Some loans (like those linked to the External Benchmark Based Lending Rate, or EBR, introduced in 2019) transmit faster — within a month. Since October 2019, RBI mandated that all new floating-rate loans (home loans, MSME loans) must be linked to an external benchmark (usually RBI’s repo rate or 3-month T-bill rate), which has improved transmission significantly.

Key Terms & Definitions

Term	Definition
CPI (Consumer Price Index)	Measures retail price changes for a typical consumer basket; India’s official headline inflation measure; RBI’s target
WPI (Wholesale Price Index)	Measures wholesale/factory-gate price changes; tends to be a leading indicator of CPI; currently in deflation
Repo Rate	The rate at which RBI lends short-term (overnight) money to banks by buying government securities — RBI’s primary policy rate
Reverse Repo Rate	The rate RBI pays banks to park surplus reserves with RBI; 100 bps below repo rate; banks rarely use this in normal times
MSF (Marginal Standing Facility)	Emergency borrowing window for banks; repo rate + 25 bps; allows banks to borrow up to 2% of NDTL on a given day
Bank Rate	The official rate at which RBI discounts bills of exchange; acts as the ceiling for the interest rate corridor; aligned with MSF
CRR (Cash Reserve Ratio)	Percentage of bank deposits that banks must hold as cash with RBI; currently 4.5%; RBI rarely uses CRR changes as a tool
SLR (Statutory Liquidity Ratio)	Percentage of NDTL that banks must hold in government securities, gold, and T-bills; currently 18%
Inflation Targeting	Monetary policy framework where RBI’s primary objective is achieving a specific inflation target (4% for India); achieved through repo rate changes
MPC (Monetary Policy Committee)	Six-member committee that sets the repo rate; 3 RBI officials + 3 external members; decisions by majority vote; meets bi-monthly
Monetary Policy Transmission	The process by which changes in RBI’s policy rate affect actual lending rates, credit availability, and ultimately inflation and growth
MCLR (Marginal Cost of Funds based Lending Rate)	Banks’ internal benchmark rate; revised at least annually; your loan’s interest rate = MCLR + spread
EBR (External Benchmark Based Lending)	Loan rates linked to external rates (RBI repo, T-bill yield); improves monetary policy transmission

Real-World Example (RBI Context)

The 2022 inflation fight — when RBI was behind the curve:

In 2022, global commodity prices surged following Russia’s invasion of Ukraine. Crude oil hit $120/barrel. Global inflation reached 40-year highs. India imported inflation — fuel prices rose, food prices rose, and CPI inflation touched 7.8% in April 2022 (well above the 6% upper band).

RBI’s MPC responded aggressively — hiking the repo rate by 190 basis points (1.9 percentage points) between May 2022 and February 2023: from 4.0% to 5.9% in just 8 months. This was the fastest rate-hiking cycle in a decade. By December 2023, CPI inflation had fallen to 5.7%, and by mid-2024 it was around 4-5%.

However, this came with growth costs — GDP growth slowed from 7.2% in 2021-22 to 6.5% in 2023-24. But the inflation credibility was maintained — India avoided the hyperinflation seen in some peer economies (Pakistan, Sri Lanka, Turkey).

Exam Pattern / How It Appears

• Data-based MCQs: Current repo rate, CRR, SLR percentages; recent CPI/WPI inflation figures
• Conceptual questions: Why does RBI use CPI and not WPI for targeting? What is the transmission mechanism?
• Numerical problems: Calculating inflation from price indices, real vs nominal rate of interest
• Case-based: Given a scenario (food inflation surges, rupee falls, growth slows), what should RBI do and why?
• Policy reasoning: Repo rate hike vs CRR cut — which tool is more effective in a given situation

Step-by-Step Example

Q: The CPI for a basket was 170 in 2023 and 178.5 in 2024. Calculate the inflation rate. Answer: Inflation rate = [(178.5 - 170) / 170] × 100 = (8.5 / 170) × 100 = 5.0%

Q: RBI hikes the repo rate from 6.5% to 6.75%. If your home loan is linked to the repo rate (EBR) with a spread of 2.5% over repo, what happens to your interest rate and EMI? Answer: Your interest rate changes from (6.5% + 2.5%) = 9.0% to (6.75% + 2.5%) = 9.25% — a 25 basis point (0.25 percentage point) increase. Your EMI would increase, assuming loan tenure remains the same.

Q: Why did RBI keep repo rate at 6.5% in February 2025 despite inflation being above 4%? Answer: RBI must balance two objectives: price stability (fighting inflation) and growth support. With CPI at ~4.9% (October 2024), inflation was within the upper band (6%) — not alarming. RBI’s policy statement noted that food inflation was moderating, and growth needed support. Raising rates would have choked investment. RBI maintained status quo while signalling continued vigilance on inflation.