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Govt overhauls GDP data to improve accuracy, official says

February 24, 2026 5 min read Economics GS Paper 3 (Indian Economy)
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What Happened

  • The National Statistics Office (NSO) under the Ministry of Statistics and Programme Implementation (MoSPI) announced a major overhaul of India's GDP data series, shifting the base year from 2011-12 to 2022-23.
  • The new series was officially released on February 27, 2026, covering annual and quarterly estimates from FY 2022-23 onwards.
  • The overhaul introduces several methodological improvements to enhance accuracy, transparency, and international comparability of India's national accounts.
  • Key changes include the adoption of double deflation in the manufacturing sector, expanded use of GST data, new annual enterprise surveys (ASUSE, PLFS) for the informal sector, and alignment with the UN System of National Accounts (SNA) 2008 framework.
  • Under the new series, India's Q3 FY26 GDP growth stands at 7.8% and full-year FY26 growth is projected at 7.6%.
  • A critical gap remains: the full back-series (historical data recalculated under the new methodology) is expected only by December 2026, making cross-series comparisons difficult in the interim.

Static Topic Bridges

National Income Accounting and Base Year Revision

National income accounting involves measuring the total economic output of a country using frameworks like Gross Domestic Product (GDP) and Gross Value Added (GVA). The base year in a GDP series serves as the reference point for calculating real (inflation-adjusted) growth — it captures the relative weights of different sectors in the economy. Because economic structures change over time, base years are periodically revised so that growth estimates reflect the current composition of the economy rather than outdated sectoral weights.

  • India's previous base year was 2011-12, set during a 2015 revision that also shifted India from GDP at factor cost to GVA at basic prices as the primary aggregate.
  • GDP at Market Prices = GVA at Basic Prices + Taxes on Products − Subsidies on Products.
  • India has revised its base year multiple times: 1950-51, 1960-61, 1970-71, 1980-81, 1993-94, 2004-05, 2011-12, and now 2022-23.
  • MoSPI is the nodal agency responsible for compiling and releasing national accounts data in India.
  • The new series aligns India with SNA 2008 and prepares it for a future transition to SNA 2025.

Connection to this news: The shift from 2011-12 to 2022-23 reflects how dramatically India's economy has changed over 12 years — the rise of digital services, formalization via GST, and the post-COVID structural shifts all warranted a fresh reference point for accurate measurement.

Double Deflation vs. Single Deflation in GDP Measurement

Deflation in national accounts refers to the process of removing price changes from nominal figures to arrive at real output (volume changes). In single deflation, only the output side of production is adjusted for prices using a single price index. In double deflation, both output and inputs are separately deflated using their respective price indices, and real value added is derived as the difference. This prevents inflation-driven changes in profit margins from being mistaken for genuine output growth.

  • Double deflation is the internationally recommended approach under SNA 2008 for measuring manufacturing and other sectors with significant intermediate inputs.
  • Previously, India used single deflation for most sectors because item-level price data was insufficient.
  • The new 2022-23 series expands double deflation to manufacturing and other sectors where sufficient price data is now available through GST filings and ASUSE surveys.
  • Annual Survey of Unincorporated Sector Enterprises (ASUSE) and the Periodic Labour Force Survey (PLFS) now provide annual direct estimates for the informal sector, replacing earlier benchmark-and-proxy methods.
  • MCA-21 (Ministry of Corporate Affairs database) is used for more granular corporate sector data.

Connection to this news: The introduction of double deflation is one of the most significant technical upgrades in the new series — it ensures that when input prices rise faster than output prices (compressing profits), this is not reflected as output growth, improving the accuracy of India's real GDP figures.

System of National Accounts (SNA) and India's Statistical Architecture

The System of National Accounts (SNA) is an internationally agreed standard framework for measuring economic activity, maintained by the UN, IMF, World Bank, OECD, and Eurostat. It prescribes how countries should define, classify, and measure GDP, GVA, savings, investment, and related aggregates. Periodic revisions to SNA (the latest being SNA 2025) require countries to update their methodologies to maintain global comparability.

  • India's 2015 base year revision was the first to comprehensively align with SNA 2008.
  • The Supply and Use Tables (SUT) framework, introduced in the new series, bridges the gap between production-side and expenditure-side GDP, significantly reducing statistical discrepancies.
  • India plans to shift to SNA 2025 in its next base year revision.
  • The NSO is the agency responsible for preparing the National Accounts Statistics (NAS) — the annual publication of India's national income data.
  • Back series data (pre-2022-23 recalculated under the new methodology) is scheduled for release by December 2026.

Connection to this news: The GDP overhaul is not merely a statistical exercise — it has real policy implications. Growth figures inform monetary policy decisions (RBI), fiscal planning (Finance Ministry), and international investment decisions. The credibility of India's GDP methodology directly affects how India's economy is perceived globally.

Key Facts & Data

  • New base year: 2022-23 (replacing 2011-12 in use since 2015)
  • Release date: February 27, 2026 by MoSPI/NSO
  • Q3 FY26 GDP growth: 7.8% (Oct-Dec 2025) under new series
  • Full-year FY26 growth: 7.6%
  • FY23-24 revised growth: 7.2% (down from 9.2% under old series)
  • FY24-25 growth: 7.1% under new series
  • Back series expected: December 2026
  • Key new data sources: ASUSE, PLFS, MCA-21, GST data, Annual Survey of Industries (2023-24 results)
  • Methodological upgrades: Double deflation, Supply and Use Tables (SUT), item-level price indices
  • International alignment: UN SNA 2008; future alignment with SNA 2025 planned
  • Agency: NSO under MoSPI (Ministry of Statistics and Programme Implementation)