Key Terms & Concepts — UPSC Mains
Index of Industrial Production (IIP)
"India's principal short-term composite index measuring the volume of industrial output, compiled by the National Statistical Office and broken down by a use-based classification."
The Index of Industrial Production (IIP) is India's principal short-term indicator of industrial activity, compiled monthly by the National Statistical Office (NSO). It measures the volume, not the value, of industrial output relative to a base year, currently revised to 2022-23 (from 2011-12) in a 2026 update that expanded the item basket to 1,042 items under NIC 2025 classification. Beyond the headline growth figure, IIP data is broken down by a use-based classification, grouping output into primary goods, capital goods, intermediate goods, infrastructure/construction goods, consumer durables and consumer non-durables. This breakdown is analytically important because different categories respond to different economic drivers: capital and intermediate goods track investment activity (public or private), while consumer non-durables, everyday fast-moving goods, are the closest industrial proxy for broad-based household consumption. A headline IIP figure can therefore mask sharply divergent underlying dynamics, for instance strong investment-led growth alongside weak consumption-led growth. IIP data is frequently read alongside GST collections and FMCG earnings data as cross-checks on whether India's growth is investment-led or consumption-led, and whether public capital expenditure is successfully 'crowding in' private investment and consumption or merely substituting for their absence.
A core GS3 economic-indicator term; the use-based classification is the key analytical tool for any question asking students to interpret, rather than merely recite, an industrial-growth headline figure.
- 1 IIP = Index of Industrial Production; compiled monthly by the National Statistical Office.
- 2 Measures volume, not value, of industrial output relative to a base year.
- 3 Base year revised to 2022-23 in 2026 (from 2011-12), basket expanded to 1,042 items under NIC 2025.
- 4 Use-based classification: primary, capital, intermediate, infrastructure/construction, consumer durable, consumer non-durable goods.
- 5 Consumer non-durables are the closest industrial proxy for broad household consumption.
- 6 Capital/intermediate goods growth tracks investment activity, public or private.
- 7 Read alongside GST collections and FMCG data to distinguish investment-led from consumption-led growth.
India's June 2026 IIP grew 7.3 per cent, a 23-month high, but the use-based breakdown showed capital goods at 14.23 per cent against consumer non-durables at only 4.91 per cent, indicating an investment-led rather than a consumption-led recovery.
