MoSPI Publishes the Sources and Methods Behind the New GDP Series (Base Year 2022-23)

🗞️ Why in News The Ministry of Statistics and Programme Implementation (MoSPI) released the publication “Sources and Methods for Compilation of National Accounts Statistics” on 21 September 2026. It sets out the concepts, data sources and methods used in the new series of National Accounts with base year 2022-23, and comes seven months after the series was released, which MoSPI describes as a record time for such a document.

Why This Document Matters

A new GDP series is only as credible as the transparency of its method. Critics of the new series, including our analysis of the GDP credibility debate, had asked MoSPI to publish exactly this document, so that users could see how every aggregate is compiled. The publication contains no new data: it consolidates the recommendations of expert sub-committees and explains the framework behind GDP, national income, private final consumption expenditure, gross fixed capital formation and savings.

The New Series in Context

The advisory machinery, as background. MoSPI set up the Advisory Committee on National Accounts Statistics (ACNAS) on 27 June 2024, chaired by Prof. B.N. Goldar of the Institute of Economic Growth. ACNAS held nine rounds of meetings, and its four sub-committees held more than 35:

MoSPI also held three Data User Conferences (Mumbai, New Delhi and Chennai) and consulted the International Monetary Fund.

What the New Methods Change

1. Double deflation for manufacturing. Real gross value added (GVA) is output minus inputs, each adjusted for its own price change. In the old series, double deflation was used only for agriculture; elsewhere, including mining, inputs and outputs were deflated by a single index, which misstates real growth when input and output prices move differently. In the new series, double deflation is used for 28 of 30 manufacturing categories, now using the output PPI. The two exceptions, where imported inputs make item-level mapping difficult, are meat, fish, fruit, vegetables, oils and fats processing, and pharmaceuticals, medicinal chemicals and botanical products.

2. The household sector measured directly. For the household (informal) sector, MoSPI now estimates activity directly from two of its own surveys, the Annual Survey of Unincorporated Sector Enterprises (ASUSE) and the Periodic Labour Force Survey (PLFS).

3. Corporate and government sectors. Non-financial private corporate estimates make detailed use of corporate filings and LLP records; financial sector coverage is expanded; for general government, institutional coverage is wider, pension treatment is refined and the value of housing provided to employees is included.

4. Consumption by purpose. Private Final Consumption Expenditure (PFCE) now follows the UN’s Classification of Individual Consumption According to Purpose (COICOP) 2018.

5. Quarterly GDP. Benchmarking of quarterly estimates to annual estimates moves to the Proportional Denton method, with greater use of GST and other administrative data.

6. New frameworks. The document adds methodology for Supply Use Tables and guidelines for regional accounts (State GDP).

The Debate the Document Enters

The criticism. The new series revised nominal GDP downward for earlier years, reducing the measured size of the economy, and critics argued that a lower base for April to June 2025 flattered the real growth of 7.8 per cent reported for April to June 2026. An Indian Express analysis put the cut in nominal GVA attributed to households in 2022-23 at about 2.9 lakh crore rupees, though other analysts argue the downward correction fell mainly on the corporate sector.

The official answer. MoSPI has argued that better capture of the informal sector explains the revisions. In construction, for example, the household share of GVA fell to 59 per cent from 79 per cent, suggesting the sector is more formal than previously estimated, while some segments (trade and repair, hotels and restaurants, road transport) turned out to be more informal than earlier thought.

What remains. Users still want a long back series linking the new base to earlier years, so that growth can be compared across decades. MoSPI has indicated it may publish frequently asked questions if users raise many queries on the document.

This article covers only the new publication; the methodology debate itself ran in our editorial on double deflation and our earlier report on the release.

UPSC Relevance

GS Paper 3. Indian economy and issues relating to planning, mobilisation of resources, growth and development; measurement of growth.

A question worth preparing. What is double deflation, and how does its adoption in India’s 2022-23 base series change the measurement of real growth? Evaluate the steps taken to address concerns over the credibility of GDP data. (250 words)

The Mains framing. Define GVA and the two deflation methods with a simple example (input prices falling while output prices rise inflate single-deflated real GVA). Then list the credibility measures: expert committee, discussion papers, user conferences, IMF consultation, and now a full methods document within seven months. End with what is still needed: a back series and independent review.

📌 Facts Corner, Knowledgepedia

Prelims, statement-ready facts:

• MoSPI released “Sources and Methods for Compilation of National Accounts Statistics” on 21 September 2026.
• The new National Accounts series has base year 2022-23, replacing 2011-12; it is the eighth base revision.
• The new series was released on 27 February 2026 and updated on 31 August 2026 for the new PPI and IIP.
• ACNAS, set up on 27 June 2024, was chaired by Prof. B.N. Goldar.
• Double deflation now covers 28 of 30 manufacturing categories; in the old series only agriculture used it.
• PFCE follows the UN’s COICOP 2018 classification.
• Quarterly GDP benchmarking now uses the Proportional Denton method.
• Household-sector estimates come directly from ASUSE and PLFS.
• In construction, the household share of GVA fell from 79 per cent to 59 per cent in the new series.

Prelims, the traps:

• The Sources and Methods document contains no new data; it explains methods.
• Double deflation deflates output and inputs separately; single deflation uses one index for both.
• The two manufacturing categories still on single extrapolation are food processing (meat, fish, fruit, vegetables, oils, fats) and pharmaceuticals.
• The base year is 2022-23, not 2023-24.

Mains, arguments and keywords:

• Credibility rests on method transparency: MoSPI published the full methods within seven months of the series.
• Double deflation corrects real GVA where input and output prices diverge.
• Downward nominal revisions reflect better informal-sector capture, says MoSPI; critics want a back series.
• Keywords: base revision, double deflation, PPI, ASUSE, PLFS, COICOP 2018, Proportional Denton, Supply Use Tables.

Interview, be ready for:

• “Why should anyone trust revised GDP numbers?” Because the methods, data sources and committee reports are now public and can be tested; what remains is a back series and independent review.
• “Why does double deflation matter?” When input prices fall faster than output prices, single deflation overstates real value added; double deflation measures each separately.

Source: MoSPI Publishes the Sources and Methods Behind the New GDP Series (Base Year 2022-23) — Ujiyari.com | Free UPSC & State PCS Current Affairs