PRESS RELEASE OF CONSUMER PRICE INDEX ON BASE 2024=100 FOR MAY, 2026

1. At a Glance

• Consumer Price Index (CPI) measures retail inflation faced by households; the May 2026 release is on the new base year 2024=100, replacing the earlier 2012=100 series [S1][S3].
• Compiled and released by the National Statistical Office (NSO), Ministry of Statistics & Programme Implementation (MoSPI) [S1][S3].
• Headline number drives the RBI's flexible inflation-targeting (FIT) regime (4% ± 2%); thus directly examinable in Prelims (data) and Mains (GS-III economy) [S1].

2. Why in the News

• PIB Release dated 12 June 2026: All-India CPI inflation for May 2026 = 3.93% (provisional); CFPI food inflation = 4.78% [S1].
• This is among the first monthly releases on the new 2024=100 base series, rolled out from February 2026 onwards, replacing the legacy 2012=100 series [S2][S3].

3. Background & Evolution

• CPI compilation in India migrated through bases 1982 → 2001 → 2010 → 2012 → 2024 [S3].
• Expert Group under MoSPI recommended comprehensive updation; new series adopted HCES 2023-24 consumption weights [S3][S5].
• Timeline for base revisions announced by MoSPI: CPI – Feb 2026, GDP – 27 Feb 2026, IIP – May 2026 [S3].
• First press release on Base 2024=100 issued earlier in 2026 (PRID 2227012) [S2].

4. Core Static Facts

• Implementing body: NSO, MoSPI (not RBI) [S1].
• Base year: 2024 = 100 (revised from 2012=100) [S3].
• Weighting source: Household Consumption Expenditure Survey (HCES) 2023-24 [S3][S5].
• Item basket: expanded from 299 → 358 items all-India (goods 259→308; services 40→50) [S3].
• Classification: 12 divisions → 43 groups → 92 classes → 162 sub-classes → 358 items (aligned with international COICOP-style classification) [S5].
• Data collection: CAPI (tablet-based) replacing paper schedules; inclusion of administrative & e-commerce price data [S3].
• Sub-indices: CPI-Rural, CPI-Urban, CPI-Combined; CFPI (Consumer Food Price Index) released alongside [S1].
• May 2026 figures (provisional):
• CPI-General: Rural 4.25% | Urban 3.53% | Combined 3.93% [S1].
• CFPI: Rural 4.85% | Urban 4.66% | Combined 4.78% [S1].
• Index values (Combined): CPI 105.91; CFPI 105.35 [S1].
• April 2026 (final): CPI Combined 3.48%; CFPI 4.20% — i.e., inflation rose in May [S1].

5. Multi-Dimensional Analysis

Economic - May 2026 headline 3.93% sits within RBI's 4±2% tolerance band; supports accommodative space [S1]. - Food remains the swing factor (CFPI 4.78% vs General 3.93%) — confirms food shocks dominate Indian CPI dynamics [S1]. - Rural inflation (4.25%) > Urban (3.53%) — pressure on rural real wages and MGNREGA wage indexation debate [S1].

Administrative / Statistical Governance - Base revision after 12 years corrects drift between fixed weights and actual consumption baskets revealed by HCES 2023-24 [S3]. - CAPI rollout improves real-time data quality; e-commerce inclusion captures modern retail for the first time [S3].

Legal / Constitutional - RBI's inflation target is statutorily set under Section 45ZA, RBI Act, 1934 (amended 2016); CPI-Combined is the nominal anchor [S1].

Social - Differential rural-urban inflation has welfare implications for DA/DR indexation of pensioners and government employees, and for PDS beneficiaries [S1].

6. Recent Developments (last 12-18 months)

• Feb 2026: First CPI release on Base 2024=100 (PRID 2227012) [S2].
• 2026: MoSPI confirmed sequential base revision of GDP (Feb 2026), CPI (Feb 2026), IIP (May 2026) [S3].
• 27 Dec 2024: Release of HCES 2023-24 results (used for new weights) [S5].
• 12 Jun 2026: CPI press release for May 2026 — headline 3.93% [S1].

7. Prelims Hooks

• CPI new base year: 2024 = 100 [S3].
• Compiling agency: NSO under MoSPI (NOT RBI, NOT Labour Bureau) [S1].
• Labour Bureau compiles CPI-IW, CPI-AL, CPI-RL — distinct from MoSPI's CPI (R/U/C) [S3].
• CFPI = Consumer Food Price Index, released monthly alongside CPI [S1].
• Item basket under base 2024 = 358 items at all-India level [S3].
• Weights drawn from HCES 2023-24 [S3][S5].
• Classification levels: 12 divisions, 43 groups, 92 classes, 162 sub-classes, 358 items [S5].
• May 2026 headline CPI inflation: 3.93% (provisional) [S1].
• May 2026 CFPI: 4.78% [S1].
• April 2026 final CPI: 3.48% [S1].
• Data collection mode: CAPI – tablet-based [S3].
• Inclusion of e-commerce & administrative price data is a 2024-series innovation [S3].
• RBI inflation target band: 4% ± 2% (uses CPI-Combined) [S1].

8. Mains Relevance

• GS-III: Indian Economy → Inflation; Monetary policy; Statistical system reforms.
• Possible question stems: 1. "The revision of CPI base year to 2024 is more than a statistical exercise — it reshapes the monetary policy anchor. Discuss." 2. "Examine the persistent divergence between rural and urban inflation in India and its policy implications." 3. "Critically evaluate India's CPI methodology in light of the 2024 base-year revision, including coverage of e-commerce."

9. Related Topics to Study Next

• WPI (Wholesale Price Index) — alternate inflation measure; Office of Economic Adviser, DPIIT.
• HCES 2023-24 — source of CPI weights and poverty re-estimation [S5].
• Flexible Inflation Targeting & MPC — uses CPI-Combined.
• CPI-IW (Labour Bureau) — basis of DA for central employees.
• Core inflation vs headline — analytical use.
• GDP base-year revision 2026 — parallel statistical reform [S3].
• IIP base revision — May 2026 [S3].
• National Statistical Commission (NSC) — oversight body.

10. Common Errors / Trap Areas

• Confusing CPI (NSO/MoSPI) with CPI-IW (Labour Bureau) — different baskets, different uses [S3].
• Assuming CPI base is still 2012=100 — it is 2024=100 from Feb 2026 [S3].
• Mixing weights source — new CPI weights are from HCES 2023-24, not NSSO 68th round 2011-12 [S3][S5].
• Forgetting CFPI ≠ WPI Food Articles — CFPI is a sub-index of retail CPI [S1].
• Claiming RBI compiles CPI — RBI only uses it for FIT; MoSPI compiles [S1].

11. Sources

• [S1] PRESS RELEASE OF CONSUMER PRICE INDEX ON BASE 2024=100 FOR MAY 2026 (PIB, 12 Jun 2026) — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2272112 — (tier 1)
• [S2] FIRST PRESS RELEASE OF CONSUMER PRICE INDEX ON BASE 2024=100 — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2227012 — (tier 1)
• [S3] MoSPI strengthens CPI via base revision 2012=100 → 2024=100 — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2243779 — (tier 1)
• [S4] MoSPI base-year revision for GDP, IIP, CPI — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2225364 — (tier 1)
• [S5] Expert Group Report on Comprehensive Updation of CPI (MoSPI) — https://www.mospi.gov.in/uploads/documents/documents/1769670534541-Export_report_CPI.pdf — (tier 1)