How national income is measured: GDP, GVA and growth

Gross domestic product, or GDP, is the total market value of final goods and services produced within a country in a given period, usually a year or a quarter. It is a headline measure of economic size and growth, but it is not a direct measure of welfare. A country can grow in GDP terms while many households still face low incomes, poor services or insecure work, so civil studies readers should treat GDP as a starting point for questions, not as a final verdict on development.

India's national accounts are compiled by the National Statistical Office, formed in 2019 by merging the Central Statistics Office and the National Sample Survey Office, under the Ministry of Statistics and Programme Implementation. The current series uses 2011-12 as its base year, adopted in the revision of January 2015, and follows the United Nations System of National Accounts of 2008. Gross value added, or GVA, measures the value added by each sector after deducting intermediate inputs. GVA at basic prices plus taxes on products minus subsidies on products gives GDP at market prices, which is the headline figure most often quoted.

Growth can be reported in nominal or real terms. Nominal growth includes price changes, while real growth removes inflation by valuing output at base-year prices, so it better reflects changes in actual production. Economists also look at per capita income, sectoral growth in agriculture, industry and services, and the distribution of growth across regions and groups. Revisions are normal: early estimates are updated as fuller survey and administrative data arrive, and base years are revised periodically so that the structure of the economy, including new products and activities, is captured.

The measurement debate matters because policy depends on it. If informal work, unpaid care work or environmental damage is poorly captured, growth figures can flatter or understate lived experience. That is why GDP is now commonly read alongside employment data, poverty estimates, health and education outcomes, and measures of inequality. A careful reader asks which series is being quoted, whether it is nominal or real, which base year applies, and what the figure leaves out.