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MoSPI moves toward a chain-based IIP

1 min readIndian Economy
Battle IAS current affairs title card: MoSPI moves toward a chain-based IIP (GS3 · Economy, 13 January 2026)

What happened

  • MoSPI released Discussion Paper 2.0 on adopting a chain-based Index of Industrial Production [PIB].

Background

  • The present IIP uses a fixed-base Laspeyres method; chain-linking updates weights annually [PIB].

Why it matters

  • Fixed weights get stale as industries rise and fall; chain-linking keeps the index honest.

How to use this in Mains

GS-III Economy

  1. As per PIB (2026-01-13): moSPI released Discussion Paper 2.0 on adopting a chain-based Index of Industrial Production.
  2. Fixed weights get stale as industries rise and fall; chain-linking keeps the index honest.
Quotable data point

MoSPI released Discussion Paper 2.0 on adopting a chain-based Index of Industrial Production.

PIB: Chain-based IIP discussion paper, 13 Jan 2026

Exam angle

UPSC

Prelims: Laspeyres, chain index.

Practice MCQs

Original practice questions (not PYQs).

Practice · UPSC

Current IIP formula

Answer (b) & explanation

PIB.

Go deeper

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Official source: PIB: Chain-based IIP discussion paper, 13 Jan 2026

facts from cited sources only; faculty review pending