Frequently Asked Questions (FAQs)

1. At a Glance

• IIP FAQ release (26 May 2026) by MoSPI explains the shift of the All India Index of Industrial Production base year from 2011-12 to 2022-23, with the new series launching 1 June 2026 [S1][S2].
• IIP is a volume index of industrial output; it is a high-frequency macro indicator alongside GDP and WPI used for short-term industrial activity tracking [S1].
• UPSC relevance: GS-III (Indian economy, growth, statistical system) — frequent prelims hook on base-year revisions, compiling agency and sectoral weights [S1].

2. Why in the News

• MoSPI released FAQs on the new IIP series on 26 May 2026 ahead of the 1 June 2026 rollout [S1].
• The Report of the Technical Advisory Committee on Base Year Revision of All India IIP (TAC-IIP) was released on 25 May 2026 [S1][S2].
• Part of a synchronised base-year overhaul: GDP (27 Feb 2026), CPI (12 Feb 2026), IIP (May/June 2026) all rebased to 2022-23 [S3].

3. Background & Evolution

• First IIP compiled with base year 1937; subsequent base years: 1946, 1951, 1956, 1960, 1970, 1980-81, 1993-94, 2004-05, 2011-12 → 2022-23 is the 10th revision [S1][S2].
• IIP compilation moved under the National Statistics Office (NSO), MoSPI [S1].
• A Pre-release Consultative Workshop on Base Revision of GDP/CPI/IIP was held on 23 December 2025 at Bharat Mandapam, New Delhi [S4].

4. Core Static Facts

• Compiling agency: National Statistics Office (NSO), MoSPI [S1].
• Release frequency / lag: Monthly, with a 28-day lag from the reference month [S1].
• Index = 100 in the base year 2022-23 [S1].
• Item basket (new series): 463 item groups, of which 120 are new (e.g., debit/credit cards with magnetic stripe, CCTV cameras, non-woven textiles, aircraft & spacecraft parts, stents, vaccines other than veterinary) [S1][S2].
• Sectoral scope (existing): Mining, Manufacturing, Electricity [S1][S2].
• Sectoral scope (new additions): Minor minerals, Rare earth minerals, Gas supply, Water supply, Sewerage & Waste Management [S1][S2].
• New granular indices: Separate indices for Renewable vs Non-renewable electricity generation; Fuel / Metallic / Non-metallic minerals; Gas supply; Water supply; Sewerage & Waste Management [S1].
• Use-based classification: Six categories of the 2011-12 series retained, with item-level review [S2].
• Base-year selection criterion: Year of relative economic stability, aligned with GDP and WPI base years [S1].

5. Multi-Dimensional Analysis

Economic - Captures structural change post-2011-12 — e-payments hardware, surveillance electronics, aerospace components, medical devices reflect manufacturing diversification [S2]. - Alignment with 2022-23 base for GDP, CPI, WPI improves coherence of nominal-real deflation and macro consistency [S1][S3].

Scientific / Technological - Inclusion of rare earth minerals, renewables disaggregation, stents and vaccines maps the index onto the critical minerals and pharma/electronics push [S1][S2]. - Renewable vs non-renewable electricity split supports energy-transition monitoring [S1].

Environmental - First-time inclusion of Water supply, Sewerage & Waste Management brings IIP closer to SDG 6 (water/sanitation) and circular-economy tracking [S1].

Administrative / Statistical Governance - TAC-IIP — an expert committee — drives methodological alignment with international best practices [S1]. - Greater granularity aids state-level and sector-level policy targeting; 28-day lag preserves timeliness [S1].

6. Recent Developments (last 12-18 months)

• 23 Dec 2025: Pre-release consultative workshop on GDP/CPI/IIP base revision at Bharat Mandapam [S4].
• 12 Feb 2026: New CPI series released [S3].
• 27 Feb 2026: New GDP series with base 2022-23 released [S3].
• 25 May 2026: TAC-IIP report released [S1].
• 26 May 2026: FAQ document on new IIP series released [S1].
• 1 June 2026: Scheduled release of new IIP series [S1].

7. Prelims Hooks

• IIP is compiled and released by the NSO under MoSPI, not by RBI or CSO (CSO has been subsumed into NSO) [S1].
• New IIP base year: 2022-23; previous: 2011-12 [S1].
• 10th revision of IIP base year [S1][S2].
• IIP released with a 28-day lag monthly [S1].
• Item basket: 463 item groups; 120 new [S1].
• New sectors added: gas supply; water supply, sewerage & waste management; minor minerals; rare earth minerals [S1].
• First IIP base year: 1937 [S2].
• Use-based classification retains six categories [S2].
• TAC-IIP report released on 25 May 2026 [S1].
• New series release date: 1 June 2026 [S1].
• Base-year selection criterion: economic stability + alignment with GDP & WPI base years [S1].
• Separate sub-indices now available for Renewable vs Non-renewable electricity [S1].

8. Mains Relevance

• GS-III: Indian Economy — growth, development, employment; mobilisation of resources; statistical system.
• GS-II: Government policies/interventions — statistical governance.
• Syllabus heading: "Indian Economy and issues relating to planning, mobilization of resources, growth, development."
• Possible question stems:
• "Frequent base-year revisions of macro indices are essential for evidence-based policy. Discuss in the context of the 2022-23 rebasing of GDP, CPI and IIP."
• "Examine how the expansion of IIP coverage to renewables, rare earth minerals and waste management reflects the structural transformation of the Indian economy."
• "Discuss the institutional arrangements for India's official statistics and the challenges they face in ensuring credibility and timeliness."

9. Related Topics to Study Next

• GDP new series 2022-23 — companion rebasing for national accounts [S3].
• CPI new series 2022-23 — retail inflation rebased [S3].
• WPI — uses the same base alignment principle.
• National Statistical Commission (NSC) & NSO — institutional architecture behind IIP.
• National Industrial Classification (NIC) — classification underpinning IIP item groups.
• Annual Survey of Industries (ASI) — annual factory-sector benchmark complementing monthly IIP.
• Critical & Rare Earth Minerals Mission — links to new IIP mineral coverage.
• PMI (S&P Global) — private monthly industrial indicator often contrasted with IIP.

10. Common Errors / Trap Areas

• IIP is released by NSO/MoSPI, NOT RBI or DPIIT.
• IIP previous base year was 2011-12, not 2012-13.
• IIP is a volume index, not a value index (unlike WPI).
• Eight Core Industries Index is released by DPIIT (Office of Economic Adviser), not MoSPI — students conflate it with IIP. The Core sector has ~40% weight in IIP under the old series.
• Use-based categories number six (Primary, Capital, Intermediate, Infrastructure/Construction, Consumer Durables, Consumer Non-durables) — not five.

11. Sources

• [S1] FAQs on Index of Industrial Production – New Series with Base year 2022-23, PIB / MoSPI — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2265637 — (tier 1)
• [S2] Report of the Technical Advisory Committee on Base Year Revision of IIP, MoSPI — https://www.mospi.gov.in/uploads/documents/documents/1779702577643-Report_of_TAC_IIP_Final.pdf — (tier 1)
• [S3] Release of new series of GDP, CPI and IIP scheduled for 27 Feb / 12 Feb / May 2026, PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2226269 — (tier 1)
• [S4] MoSPI Pre-release Consultative Workshop on Base Revision of GDP, CPI and IIP, 23 Dec 2025, PIB — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2207861 — (tier 1)

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