EconomyGS3+ GS2

MoSPI Explains GDP Revision: Informal Sector Surveys Replace Proxy Estimates

Indian Express·2026-09-11· Read original

"MoSPI Explains GDP Revision: Informal Sector Surveys Replace Proxy Estimates"

Prelims Facts

  • •ASUSE (Annual Survey of Unincorporated Sector Enterprises) is now conducted on a quarterly basis, providing direct GVA and employment data for India's informal non-agricultural sector.
  • •PLFS (Periodic Labour Force Survey) is conducted on a monthly basis and feeds workforce size estimates into the new national accounts series.
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Key Terms

Unincorporated sector

enterprises not registered as companies — sole proprietorships, household firms, unregistered partnerships

Gross Value Added (GVA)

output value minus intermediate input costs; the building block of GDP before taxes and subsidies

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Study Note

BackgroundCore Concept

Background

India's national accounts are compiled by the National Statistics Office (NSO) under the Ministry of Statistics and Programme Implementation (MoSPI). The central challenge in measuring India's Gross Domestic Product (GDP) has always been the size and opacity of the informal economy. The informal or unincorporated sector, sole proprietorships, household enterprises, and unregistered partnerships, employs roughly 89 per cent of India's non-agricultural workforce but generates no statutory filings, no audited accounts, and no regular administrative data trail.

The 2011-12 base year revision was a landmark methodological shift. It moved GDP measurement from factor cost to market prices, adopted MCA-21 corporate database records for the organised sector, and introduced the concept of using enterprise-level data rather than establishment-level data. However, for the unincorporated sector, the 2011-12 series still relied on a fundamental workaround: it anchored estimates to quinquennial (every five years) NSSO enterprise surveys, then projected those base-year figures forward using proxy indicators, formal corporate growth rates, historical tax collections, or inter-survey growth rates, until the next quinquennial survey arrived. This approach assumed that informal-sector productivity moved in step with formal-sector proxies, an assumption that became increasingly questionable as the two segments diverged structurally.

The Annual Survey of Unincorporated Sector Enterprises (ASUSE) and the Periodic Labour Force Survey (PLFS) were institutionalised precisely to break this dependence on proxies. ASUSE provides annual, and now quarterly, direct measurements of establishments, employment, and Gross Value Added (GVA) per worker in the unincorporated non-agricultural sector. PLFS provides monthly workforce size estimates. Together, they give MoSPI a continuous empirical window into informal-sector activity, something no previous series had.

The Topic Explained

The new 2022-23 base year series replaces proxy-based informal-sector estimates with direct annual survey data from ASUSE and PLFS. The practical consequence is a downward revision in nominal GDP across all overlapping years (2022-23 to 2024-25 and subsequent quarters). The revision does not mean earlier estimates were systematically biased or dishonest. GDP is always an estimate built on the best data available at the time. The 2011-12 series used the best tools then available; the new series uses better tools now available.

The old method calculated unincorporated-sector GVA by multiplying estimated workforce counts by Value Added per Worker derived from decadal surveys, then projecting that figure forward using proxies. If formal-sector proxies overstated informal-sector growth, as appears to have happened, the cumulative projection over a decade would drift upward from reality. The new series corrects this drift by anchoring each year's estimate to actual survey evidence rather than a decade-old base projected through a formal-sector lens.

A second major methodological change in the new series is the adoption of double deflation using the Producer Price Index (PPI). …

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Related PYQs

2021GS3 Mains

Explain the difference between computing methodology of India's Gross Domestic Product (GDP) before the year 2015 and after the year 2015.

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2015GS1 Prelims

With reference to Indian economy, consider the following statements:

1.The rate of growth of Real Gross Domestic Product has steadily increased in the last decade.

2.The Gross Domestic Product at market prices (in rupees) has steadily increased in the last decade.

Which of the statements given above is/are correct?

A1 only
B2 only
CBoth 1 and 2
DNeither 1 nor 2
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2022GS1 Prelims

Which of the following activities constitute real sector in the economy?

1.Farmers harvesting their crops

2.Textile mills converting raw cotton into fabrics

3.A commercial bank lending money to a trading company

4.A corporate body issuing Rupee Denominated Bonds overseas

Select the correct answer using the code given below:

A1 and 2 only
B2, 3 and 4 only
C1, 3 and 4 only
D1, 2, 3 and 4
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Practice MCQs

Economymedium

With reference to India's new 2022-23 base year GDP series, consider the following statements:

1.The Annual Survey of Unincorporated Sector Enterprises (ASUSE) is now conducted on a quarterly basis.

2.The Periodic Labour Force Survey (PLFS) is now conducted on a monthly basis.

3.The new series uses double deflation with the Wholesale Price Index (WPI) as the deflator.

4.The input Producer Price Index (PPI) was used for deflating intermediate inputs in the new series.

Which of the statements given above is/are correct?

A1 and 2 only
B1, 2 and 3 only
C2 and 4 only
D1, 2, 3 and 4
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Economymedium

Which of the following best describes the concept of 'double deflation' as used in national accounts?

AAdjusting GDP twice — once for inflation and once for exchange rate changes — to derive purchasing power parity estimates
BDeflating both output and intermediate inputs separately using their own price indices, then subtracting to derive real Gross Value Added
CApplying two successive base year revisions to the same GDP series to eliminate accumulated measurement errors
DUsing both WPI and CPI simultaneously as deflators to cross-validate real GDP growth estimates
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Economyhard

Consider the following pairs:

Index / Survey — Key Feature

1.WPI — Excludes taxes and trade margins; includes exports and imports

2.Output PPI — Tracks ex-factory, ex-mine, and ex-mandi basic prices

3.ASUSE — Covers unincorporated non-agricultural sector enterprises

4.PLFS — Provides monthly workforce size estimates

How many of the above pairs are correctly matched?

AOnly one
BOnly two
COnly three
DAll four
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Economyhard

With reference to the Producer Price Index (PPI) adopted in India's new 2022-23 GDP base year series, consider the following statements:

1.The output PPI is compiled by the Department for Promotion of Industry and Internal Trade (DPIIT).

2.The output PPI tracks prices at the ex-factory, ex-mine, and ex-mandi stage, excluding taxes and transport charges.

3.The input PPI (at trial stage) was used for deflating intermediate inputs in the double deflation process.

Which of the statements given above is/are correct?

A1 and 2 only
B2 and 3 only
C1 and 3 only
D1, 2 and 3
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Economymedium

In the context of India's GDP estimation, what was the primary reason for using proxy indicators (such as formal corporate growth rates) for the unincorporated sector in the 2011-12 base year series?

AThe unincorporated sector was considered too small to warrant direct surveys
BRegular annual surveys for the unincorporated sector did not exist, so proxies bridged the gap between quinquennial NSSO surveys
CThe UN System of National Accounts mandated the use of proxy-based estimation for informal sectors
DMoSPI lacked the constitutional authority to conduct surveys of unregistered enterprises
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