GDP Measurement
Base Year and Its Importance
Gross Domestic Product (GDP) is the monetary value of all final goods and services produced within a country's borders in a given year, measured at constant prices (real GDP) or current prices (nominal GDP). To compute real GDP, nominal output must be "deflated" — adjusted for price changes relative to a reference (base) year.
- The base year serves as the benchmark for computing constant-price GDP; it must be periodically updated to reflect structural changes in the economy (changes in production patterns, emergence of new sectors, obsolescence of old ones).
- India's previous base year was 2011-12, which became increasingly outdated as the service sector, digital economy, and informal sector underwent structural transformation.
- The UN System of National Accounts (SNA) 2008 — the international standard for national accounting — recommends periodic base year revision and adoption of chain-linked volume indices for accurate measurement.
- Common base year revisions in India: 1948-49 → 1960-61 → 1970-71 → 1980-81 → 1993-94 → 2004-05 → 2011-12 → 2022-23 (new).
- The revision to 2022-23 addresses long-standing IMF and economist criticism that India's GDP was being measured against a structurally dissimilar economy.
● Tracked since February 26, 2026 · last seen August 30, 2026 · updates as the daily brief publishes
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