Indian Economy

Counting the economy — the national income family

GDP (Gross Domestic Product) is the market value of all final goods and services produced within India in a year — by Indians or foreigners. GNP adds what Indians earn abroad: GNP = GDP + Net Factor Income from Abroad (NFIA) — remittances, profits, interest flowing in minus the same flowing out. NNP = GNP − depreciation (wear and tear of machines). National Income in exam language = NNP at factor cost. Per capita income = national income ÷ population. Moving between prices: Market Price = Factor Cost + indirect taxes − subsidies, because indirect taxes push the price up and subsidies hold it down.

Chains to memorise:

• GDP → (+NFIA) → GNP → (−depreciation) → NNP → (−indirect taxes, +subsidies) → National Income (NNP at FC).
• NNP at factor cost is the textbook definition of 'national income'; GNP is the widest of the family.

Nominal, real and the deflator

Nominal (current-price) GDP uses this year's prices, so it grows even if only prices grow. Real (constant-price) GDP uses a fixed base year's prices, so it shows real production. The bridge is the GDP deflator:

$\text{Deflator} = \frac{\text{Nominal GDP}}{\text{Real GDP}} \times 100$

If nominal GDP is ₹330 and real GDP is ₹300, the deflator is 110 — prices rose 10% since the base year. Divide nominal by (deflator ÷ 100) to recover real GDP. Base years are revised periodically: the older national accounts series used 2011-12, and MoSPI released a new series with base year 2022-23 in February 2026 (the IIP followed with the same base from June 2026). Exams frame base-year questions around exactly this revision.

How it is measured

Three equivalent approaches: the income method (wages + rent + interest + profit), the expenditure method (private consumption + investment + government spending + net exports: $C + I + G + (X-M)$) and the product (value-added) method (output sector by sector, counting only value added to avoid double counting). India now anchors sectoral reporting on Gross Value Added (GVA) at basic prices, with GDP = GVA + product taxes − product subsidies. The statistical agency is the National Statistical Office (NSO) under MoSPI (the old CSO and NSSO were merged into it in 2019). Estimates come in stages — advance, provisional, revised, final.

The three sectors

Primary = agriculture, forestry, fishing, mining; secondary = manufacturing, construction, electricity; tertiary (services) = trade, transport, finance, IT, public administration. Services contribute the biggest share of India's GVA today, which is why exams test sector shares and which activity belongs to which sector. Related small facts: the eight core industries (coal, crude oil, natural gas, refinery products, fertilisers, steel, cement, electricity) feed the Index of Eight Core Industries and carry a large weight in the IIP; per capita income here means per capita net national income, not GDP per head.

Quick revision

• GDP = within India; GNP = GDP + NFIA; NNP = GNP − depreciation; National Income = NNP at factor cost.
• MP = FC + indirect taxes − subsidies; deflator = (nominal ÷ real) × 100.
• Real GDP uses base-year prices; the current family of series moved to base year 2022-23 (released Feb 2026), replacing 2011-12.
• Methods: income, expenditure ($C+I+G+X-M$), value-added; GVA at basic prices; NSO under MoSPI (CSO + NSSO merged 2019).
• Sectors: primary / secondary / tertiary; services now the largest GVA share.
• Eight core industries: coal, crude, gas, refinery, fertilisers, steel, cement, electricity.