Decoding India’s GDP base revision, Pg9

Key Highlights:

• India revised its GDP base year to 2022-23, replacing the 2011-12 series.
• This revision led to a downward adjustment of India’s nominal GDP by approximately 2.7% in 2022-23, 3.5% in 2023-24, and 3.8% in 2024-25.
• The changes are attributed to improved data sources and methodological enhancements, particularly in measuring the unincorporated services sector.
• The National Statistics Office (NSO) under the Ministry of Statistics and Programme Implementation (MoSPI) released the new GDP estimate framework on February 27, 2026.

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Detailed Insights:

• The revision aligns with international statistical practices, where rebasing exercises in various countries have also led to changes in nominal GDP estimates.
• India's previous shift from the 2004-05 to the 2011-12 base year also altered the estimated size of the economy.
• The 2022-23 base year was chosen as it represents the first stable post-COVID economic year, avoiding distortions from pandemic-era volatility.
• Upward revisions were noted in agriculture and allied activities (3.8%–5.9%) and financial services, real estate, professional services, and ownership of dwellings (7.8%–9.0%).
• Significant downward revisions occurred in trade and transport and storage (23%–26%), with trade Gross Value Added (GVA) revised down by 36%.
• The improved measurement of the unincorporated sector, using data from Annual Survey of Unincorporated Sector Enterprises (ASUSE) and Periodic Labour Force Survey (PLFS), was a major driver of the nominal GDP revision.
• The previous 2011-12 series relied on proxy indicators for the informal sector, assuming its growth mirrored the formal sector, which proved inaccurate during economic disruptions.
• The World Bank's April 2026 India Development Update also highlighted the reassessment of the informal economy as a primary reason for the nominal GDP revision.
• The new series indicates less volatile and more broad-based quarterly growth from FY 2023-24 to FY 2025-26.
• The International Monetary Fund (IMF) had previously given India's national accounts data a 'C' grade, partly due to the outdated base year and informal sector coverage.
• The United Nations System of National Accounts (SNA 1993) recommends base-year updates every five years, and India is now committing to a more regular cycle.

Key Concepts Involved:

• GDP Base Year: A reference year whose prices are used to calculate real GDP, reflecting changes in the volume of goods and services.
• Nominal GDP: The total value of goods and services produced in an economy, measured at current market prices.
• Gross Value Added (GVA): A measure of the value of goods and services produced in an area, industry, or sector of an economy.
• Unincorporated Sector: Businesses that are not legally separate from their owners, often part of the informal economy.