National Accounts of India: GDP, NDP, GNI and Core Concepts for ISS

National Accounts provide the accounting framework used to describe an economy's production, income and expenditure. For ISS aspirants, the important skill is not memorising isolated definitions but understanding how GDP, NDP, GNI, depreciation and net factor income fit together. This guide builds that framework step by step and then tests it with exam-style questions.

1. What are National Accounts?

National Accounts are a systematic set of accounts describing economic activity during a period. They connect production, income and expenditure so that the same economic activity can be viewed from different angles. In examination questions, always identify whether the quantity is gross or net, domestic or national, and measured at market prices or another valuation.

2. GDP and the three approaches

Gross Domestic Product (GDP) measures the value of final goods and services produced within the domestic territory during a reference period. It can be approached through production/value added, income, and expenditure. In a well-constructed system these approaches describe the same underlying economic activity, although statistical discrepancies may arise in practice.

3. Gross versus net measures

The word gross means that consumption of fixed capital, commonly called depreciation in exam questions, has not been deducted. Therefore, a net measure is obtained by subtracting consumption of fixed capital from the corresponding gross measure. This distinction is central in numerical questions.

4. Domestic versus national

Domestic concepts are based on production within the domestic territory. National concepts relate to income accruing to residents and therefore require an adjustment for net factor income from abroad. A useful exam relationship is: GNI = GDP + Net Factor Income from Abroad, when the relevant terminology is used.

5. Market prices and valuation

Market-price measures include relevant taxes less subsidies on products in the valuation framework. Factor-cost terminology is older and focuses on factor payments. When a question mixes these concepts, write the exact adjustment rather than relying on memory of a single formula.

6. Exam strategy

ISS questions often combine two or three transformations in one numerical problem. First label the starting aggregate, then apply domestic/national and gross/net adjustments one at a time. This prevents sign errors and makes the solution easy to award marks.

Three important questions on this topic

Try each one on your own first, then tap the answer.

Key takeaways

• GDP is a domestic production concept.
• Gross-to-net requires deduction of consumption of fixed capital.
• National aggregates require the appropriate external income adjustment.
• Always state the population, reference period, unit, numerator and denominator before interpreting an official statistic.