<h2>Overview</h2> <p>In March 2026 the <span class="key-term" data-definition="Consumer Price Index — a measure of retail inflation that tracks price changes of a basket of goods and services; essential for GS3: Economy">CPI</span> rose to <strong>3.4%</strong>, marginally above February’s <strong>3.21%</strong>. Food inflation accelerated to <strong>3.87%</strong>. The rise comes after the Ministry of Statistics and Programme Implementation (<span class="key-term" data-definition="MoSPI — the nodal agency that publishes official statistics on price indices, GDP, and other macro‑economic indicators (GS3: Economy)">MoSPI</span>) shifted the CPI base year to 2024, replacing the 2012 base.</p> <h3>Key Developments</h3> <ul> <li>New CPI base year 2024 with a basket of <strong>358 items</strong> across 12 divisions, 43 groups, and 92 classes.</li> <li>Inclusion of rural house‑rent for the first time, improving coverage of rural consumption.</li> <li>Wholesale Price Index (<span class="key-term" data-definition="WPI — an index that records price changes at the wholesale level, excluding services; compiled by DPIIT (GS3: Economy)">WPI</span>) retains 2011‑12 as its base year and covers 697 items in three components: Primary Articles, Fuel & Power, and Manufactured Products.</li> <li>The <span class="key-term" data-definition="Index of Eight Core Industries (ICI) — a composite index tracking production of coal, crude oil, natural gas, refinery products, fertilizers, steel, cement and electricity; vital for GS3: Economy"> Index of Eight Core Industries</span> (ICI) grew <strong>2.3%</strong> (provisional) in February 2026.</li> </ul> <h3>Important Facts</h3> <p><strong>Inflation Mechanics</strong>: Inflation measures the rise in general price level, eroding purchasing power. Higher inflation reduces <span class="key-term" data-definition="Real interest rate — the nominal interest rate adjusted for inflation; a key indicator of the true return on savings (GS3: Economy)">real interest rate</span> (Real = Nominal – Inflation), discouraging savings.</p> <p><strong>CPI vs. WPI</strong>: CPI captures retail prices (including taxes) and services such as education, health, and transport, directly influencing the <span class="key-term" data-definition="Reserve Bank of India (RBI) — India's central bank responsible for monetary policy, interest rates, and financial stability (GS3: Economy)">RBI</span>'s policy decisions. WPI records wholesale prices of goods only; it omits services, so a rise in service costs lifts CPI but not WPI.</p> <p><strong>Weightage Differences</strong>: Food has a higher weight in CPI than in WPI, explaining why CPI‑based inflation often appears more volatile. The ICI’s component weights are: Petroleum Refinery Products (28.04%), Steel (17.92%), Electricity (19.85%), Coal (10.33%), Crude Oil (8.98%), Natural Gas (6.88%), Fertilizers (2.63%). These eight sectors constitute about <strong>40.27%</strong> of the Index of Industrial Production.</p> <h3>UPSC Relevance</h3> <p>Understanding CPI, WPI, and ICI is crucial for GS‑3 (Economy) questions on inflation, price indices, and industrial performance. The shift to a 2024 base year reflects methodological updates that often appear in prelims. The distinction between goods‑only (WPI) and goods‑plus‑services (CPI) indices tests conceptual clarity. The ICI’s weightage helps answer questions on sectoral contributions to industrial output.</p> <h3>Way Forward</h3> <p>Students should memorise the latest base years (CPI 2024, WPI 2011‑12) and the composition of the CPI basket. Track upcoming WPI data (expected 15 April 2026) to compare retail and wholesale inflation trends. Relate the health of the eight core industries to broader macro‑economic indicators such as GDP growth and fiscal policy. </p>