CDS / OTA Current Affairs · Economy & Inflation · 13 Jul 2026

CPI Inflation & the New 2024=100 Base: A CDS/OTA Economy Explainer

By Aditya Tiwari · 13 Jul 2026 · 7 min read

On 13 July 2026, the Ministry of Statistics & Programme Implementation (MoSPI) reported that retail inflation (CPI) for June 2026 was 4.38%, with food inflation (CFPI) at 5.32%. Crucially, these numbers are on the new base year 2024=100 — a major update from the old 2012=100 series. For a CDS/OTA aspirant, this is a high-value economy topic that bundles how India measures inflation, why base years are revised, and how the RBI uses the CPI — a cluster the General Knowledge paper reliably tests.

The news in one frame

The essentials:

What: CPI (retail) inflation for June 2026 = 4.38% (year-on-year), on the new base 2024=100.
Food inflation (CFPI): 5.32%.
Split: rural 4.74%, urban 3.92%.
Who: compiled and released by MoSPI (National Statistical Office).
Big change: the base year has been revised from 2012 to 2024.

What is the Consumer Price Index (CPI)?

Start with the concept. The Consumer Price Index (CPI) measures the average change over time in the prices of a fixed basket of goods and services bought by households — food, fuel, housing, clothing, health, education and so on. Inflation is the percentage rise in that index compared with a year earlier. So "CPI inflation of 4.38%" means the cost of the household basket is 4.38% higher than a year ago.

The CPI is the "retail" (consumer-level) inflation measure — the prices you and I actually pay.
It is distinct from the Wholesale Price Index (WPI), which tracks prices at the wholesale/producer level.
Within CPI, the Consumer Food Price Index (CFPI) isolates food inflation — often the most volatile and politically sensitive component.

This applied-economics core is exactly what the CDS/OTA notes on inflation build.

Why revise the base year to 2024?

The examinable heart of the news is the base-year revision. An index compares today's prices with a base period (set = 100). Over time, what people buy changes — more services, more digital spending, different food habits — so an old basket (from 2012) stops reflecting reality. The new 2024=100 series fixes this:

The item basket and weights are drawn from the latest Household Consumption Expenditure Survey (HCES) 2023-24.
The basket was expanded to 358 items (adding modern items like online streaming), using the international COICOP 2018 classification.
2025 is an overlap year where both the 2012 and 2024 series ran, to bridge the transition.

The one-line takeaway: a modern base year keeps the CPI representative of how India actually spends today. This mirrors the same logic behind the IIP (2011-12) and the new Index of Services Production revisions — a theme tracked on the CDS/OTA daily current affairs.

How the RBI uses the CPI

The most important policy link is monetary policy. Under India's flexible inflation-targeting framework (adopted 2016), the RBI is legally tasked with keeping CPI inflation at 4%, within a tolerance band of ±2% (i.e., 2–6%).

The RBI relies specifically on CPI (Combined) — not WPI — as its target measure.
A six-member Monetary Policy Committee (MPC) sets the repo rate to steer inflation towards 4%.
June 2026's 4.38% sits comfortably within the band and close to the 4% target — a sign of price stability.

So the CPI is not just a statistic; it directly drives interest-rate decisions that affect loans, EMIs and growth. This connects to the CDS/OTA notes on monetary policy.

Reading the June 2026 numbers

A little interpretation makes an answer stand out:

Food inflation (5.32%) is higher than headline (4.38%) — food is pulling inflation up, a common Indian pattern given weather and supply shocks.
Rural inflation (4.74%) exceeds urban (3.92%) — rural households, who spend more on food, feel food-price swings more.
Items like potato showed deflation (falling prices), pulling the food index down, while others rose.

The revision hook: CPI = retail inflation (MoSPI); new base 2024=100 (from HCES 2023-24); RBI targets 4% ±2% CPI via the MPC.

Types and causes of inflation

A little conceptual depth turns a data point into understanding — and the exam tests it:

Demand-pull inflation: too much money chasing too few goods (excess demand) pushes prices up.
Cost-push inflation: rising input costs (fuel, wages, imported raw materials) push prices up even without extra demand.
Headline vs core inflation: core inflation strips out volatile food and fuel to reveal the underlying trend; food-driven spikes (like June's 5.32% CFPI) can make headline inflation jumpy.

And two more price measures to keep distinct from CPI:

The GDP deflator — the broadest price measure, covering all goods and services in GDP.
The WPI — wholesale prices, released by the Office of the Economic Adviser (Ministry of Commerce), with a 2011-12 base.

So India watches a family of price indices (CPI, WPI, GDP deflator), but it is the CPI that anchors the RBI's interest-rate decisions — which is why its accuracy (and a modern base year) matters so much.

Exam relevance in one paragraph

For CDS/OTA GK, retain: CPI measures retail inflation, compiled by MoSPI; the base year was revised to 2024=100 (from 2012), based on HCES 2023-24, with 358 items; the CFPI measures food inflation; the RBI targets CPI inflation at 4% ±2% via the Monetary Policy Committee; June 2026 CPI was 4.38%. For the essay/interview, the theme is measuring inflation accurately to guide monetary policy and protect the common person.

🎯 Practice MCQs

Q1. The CPI measures inflation at which level? (a) wholesale (b) retail (consumer) (c) factory-gate only (d) export → (b) — retail (consumer) prices.

Q2. The CPI is compiled and released by: (a) RBI (b) MoSPI / National Statistical Office (c) SEBI (d) NITI Aayog → (b) — MoSPI (NSO).

Q4. The new CPI basket and weights are based on which survey? (a) NFHS (b) Household Consumption Expenditure Survey 2023-24 (c) Census 2011 (d) PLFS → (b) — the HCES 2023-24.

Q5. The "CFPI" measures inflation in: (a) fuel (b) food (c) housing (d) clothing → (b) — food (Consumer Food Price Index).

Q6. The RBI's inflation target under the flexible framework is: (a) 2% ±1% (b) 4% ±2% (c) 6% ±3% (d) 5% fixed → (b) — 4% with a ±2% tolerance band.

Q7. Which index does the RBI use for inflation targeting? (a) WPI (b) CPI (Combined) (c) IIP (d) Sensex → (b) — CPI (Combined).

Q8. The body that sets the repo rate to control inflation is the: (a) Finance Commission (b) Monetary Policy Committee (MPC) (c) GST Council (d) NITI Aayog → (b) — the Monetary Policy Committee.

Q9. June 2026 CPI (retail) inflation was about: (a) 2.1% (b) 4.38% (c) 7.5% (d) 10% → (b) — 4.38%.

Q10. In June 2026, rural vs urban inflation was: (a) rural higher (4.74% vs 3.92%) (b) urban higher (c) equal (d) both negative → (a) — rural (4.74%) higher than urban (3.92%).

Q11. The CPI differs from the WPI in that the WPI tracks: (a) retail prices (b) wholesale/producer prices (c) stock prices (d) gold prices → (b) — wholesale/producer-level prices.

Q12. "Inflation" is best defined as: (a) a fall in prices (b) a sustained rise in the general price level (c) rising unemployment (d) a rise in exports → (b) — a sustained rise in the general price level.

Q13. Why is a base-year revision needed periodically? (a) to make the index harder (b) to keep the basket representative of current consumption (c) to raise taxes (d) to change the currency → (b) — to reflect changing consumption patterns.

Q15. "Core inflation" is the CPI excluding which volatile items? (a) food and fuel (b) housing and clothing (c) health and education (d) transport → (a) — food and fuel.

Q16. The broadest price measure, covering all goods and services in GDP, is the: (a) GDP deflator (b) CPI (c) WPI (d) Sensex → (a) — the GDP deflator.

📋 How this gets asked (PYQ pattern)

Inflation is a high-frequency economy set in CDS/OTA. The dependable framings are "CPI is released by" (MoSPI), CPI vs WPI, the RBI's 4% ±2% target and the MPC, and now the new base year (2024=100). A common trap swaps CPI with WPI, or attributes CPI release to the RBI. The fresh 2026 hook is the 2024=100 base revision and June's 4.38% — ideal for "which index / which body / what target" items. We reference the pattern, not any exact past question.

Preparing for CDS or OTA? Inflation, the CPI and RBI monetary policy are high-yield economy GK and a strong essay on price stability. Follow our daily CDS/OTA current affairs and train with serving-officer faculty in the upcoming Cavalier courses in Delhi.

✍️ Written by Aditya Tiwari — Economy & current-affairs faculty at The Cavalier. Reviewed by the Cavalier Faculty Desk. The Cavalier, founded by ex-Army officers, has trained NDA/CDS/SSB aspirants since 2001 (Facebook · YouTube).

Source: PIB / MoSPI release, 13 July 2026. Facts cross-verified with independent sources.

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