National Income Aggregates: GDP, GNP, NNP and PCI Explained
National income aggregates are the core building blocks of national income accounting. GDP measures the value of all final goods and services produced within India’s borders; GNP adds Net Factor Income from Abroad; NNP deducts depreciation; and Per Capita Income (PCI) divides NNP at factor cost by population. The factor cost vs market price distinction is simply the bridge of indirect taxes minus subsidies. In India, NNP at factor cost is officially called “National Income”.
- Why National Income Matters in UPSC, SSC and Banking Exams
- Gross Domestic Product (GDP): Meaning and Types
- Gross National Product (GNP) and Net Factor Income from Abroad
- Net National Product (NNP) and Depreciation
- Per Capita Income (PCI): Definition and Calculation
- Factor Cost vs Market Price: The Indirect Tax and Subsidy Bridge
- Base Year 2011-12: What Aspirants Must Know
- Common Prelims Confusions and How to Avoid Them
- Previous Year Questions and Practice MCQs
- One-Page Revision Table of All Aggregates
- Frequently Asked Questions
- Which aggregate is officially called ‘National Income’ in India?
- Why did India shift to market price for GDP measurement in 2015?
- Is the base year for national income still 2011-12?
- What is the difference between basic price and factor cost?
- Which is larger for India: GDP or GNP?
- Related reading
Why National Income Matters in UPSC, SSC and Banking Exams
National income accounting is a permanent fixture in the Indian Economy syllabus. In UPSC Prelims, questions regularly test the difference between GDP and GNP, the meaning of NFIA, base year revisions, and which aggregate is officially called national income. In SSC CGL/CHSL, one-liners on formulas (NNP = GNP − Depreciation) appear frequently. Banking and RBI Grade B papers add application-based numericals on factor cost vs market price. Official data is published by the Ministry of Statistics and Programme Implementation (MoSPI) and the Reserve Bank of India, so verify figures there before the exam.
Gross Domestic Product (GDP): Meaning and Types
GDP is the money value of all final goods and services produced within the domestic territory of a country during an accounting year — regardless of who produces them (Indians or foreigners).
- GDP at Market Price (GDPMP): valued at the prices actually paid by buyers, including indirect taxes and excluding subsidies.
- GDP at Factor Cost (GDPFC): what factors of production actually earn — GDPMP minus indirect taxes plus subsidies.
- Nominal GDP: valued at current year prices — inflated by price rise.
- Real GDP: valued at base year (constant) prices — the true measure of output growth, used in GDP growth rate calculations.
Gross National Product (GNP) and Net Factor Income from Abroad
GNP = GDP + Net Factor Income from Abroad (NFIA)
NFIA = factor income earned by Indians abroad (wages, profits, interest, rent) minus factor income earned by foreigners in India. A key component is remittances — money sent home by Indian workers in the Gulf, USA and Europe. India receives among the world’s largest remittance inflows. However, for India, NFIA is negative, because outflows of income on foreign investment in India exceed inflows — so GDP > GNP for India.
Net National Product (NNP) and Depreciation
NNP = GNP − Depreciation
Depreciation (called “consumption of fixed capital” in national accounts) is the wear-and-tear or obsolescence of machines and capital goods during production. “Gross” aggregates ignore this loss; “Net” aggregates subtract it to show what is genuinely available. Since capital does wear out, NNP gives a more accurate picture of sustainable income than GNP.
Per Capita Income (PCI): Definition and Calculation
PCI = NNP at Factor Cost ÷ Population
Per Capita Income is the average income of an ordinary citizen during a year. It is widely used as a welfare indicator — though an imperfect one, since it hides inequality and non-monetary well-being. In India, PCI figures are released by MoSPI/NSO alongside annual national accounts data. A higher PCI signals higher average living standards, but comparisons across states or countries must adjust for price levels.
Factor Cost vs Market Price: The Indirect Tax and Subsidy Bridge
The two valuation concepts differ only by net indirect taxes:
Market Price = Factor Cost + Indirect Taxes − Subsidies
Worked example: Suppose GDP at factor cost is ₹200 lakh crore, indirect taxes are ₹25 lakh crore and subsidies are ₹5 lakh crore. Then GDP at market price = 200 + 25 − 5 = ₹220 lakh crore. Reverse the signs to go from market price back to factor cost.
A third concept, basic price = factor cost + production taxes − production subsidies (e.g., property tax, stamp duty — taxes on production irrespective of quantity sold). Since 2015, India reports GVA at basic prices and GDP at market prices, following the UN’s SNA 2008 methodology — see the UN System of National Accounts.
Base Year 2011-12: What Aspirants Must Know
- The current base year for India’s real GDP/GVA series is 2011-12, adopted in the January 2015 national accounts revision.
- The 2015 revision also switched headline GDP to market prices and introduced GVA at basic prices, aligning with SNA 2008.
- The government has been working on revising the base year to a more recent year; until MoSPI officially notifies a new series, 2011-12 remains the answer for exams. Check MoSPI for the latest status before your exam date.
Common Prelims Confusions and How to Avoid Them
- GDP vs GNP: GDP = territorial concept (where produced); GNP = normal resident concept (who earns). India: GDP > GNP since NFIA is negative.
- National Income vs Net National Product: They are the same thing — NNP at factor cost IS national income.
- Real vs Nominal: Nominal can rise purely due to inflation; only real GDP (constant prices) measures actual output growth.
- Factor cost vs Basic price: Basic price includes production taxes/subsidies; factor cost does not. Do not interchange them after the 2015 revision.
- Gross vs Net: Net = Gross − Depreciation. Watch for “consumption of fixed capital” as a synonym.
Previous Year Questions and Practice MCQs
Q1. (UPSC-style) Which of the following is called “National Income” of India?
(a) GDP at market price (b) GNP at market price (c) NNP at factor cost (d) NNP at market price
Answer: (c) — NNP at factor cost is officially designated as National Income.
Q2. (SSC-style) GNP = GDP + ?
(a) Depreciation (b) Subsidies (c) Net Factor Income from Abroad (d) Indirect taxes
Answer: (c) — NFIA is added to GDP to get GNP.
Q3. If GDP at market price is ₹250 lakh crore, indirect taxes ₹30 lakh crore, subsidies ₹10 lakh crore, and depreciation ₹20 lakh crore, NNP at factor cost is:
NNPFC = 250 − 30 + 10 − 20 = ₹210 lakh crore.
Q4. For India, which is larger — GDP or GNP?
GDP, because NFIA is negative (income paid to foreign investors exceeds income earned by Indians abroad).
One-Page Revision Table of All Aggregates
| Aggregate | Formula | Key Idea |
|---|---|---|
| GDP at Market Price | Value of output within domestic territory at market prices | Territorial + market valuation |
| GDP at Factor Cost | GDPMP − Indirect Taxes + Subsidies | Factor earnings only |
| GNP | GDP + NFIA | Residents’ income, worldwide |
| NNP | GNP − Depreciation | Net of consumption of fixed capital |
| National Income | NNP at Factor Cost | Official national income of India |
| Per Capita Income | NNPFC ÷ Population | Average income / welfare indicator |
Frequently Asked Questions
Which aggregate is officially called ‘National Income’ in India?
NNP at factor cost. It is estimated and published by the National Statistical Office (NSO) under MoSPI in the annual National Accounts estimates.
Why did India shift to market price for GDP measurement in 2015?
The January 2015 revision aligned India with the UN’s SNA 2008: headline GDP is now measured at market prices, sectoral output as GVA at basic prices, with base year 2011-12 — improving international comparability.
Is the base year for national income still 2011-12?
Yes, the currently notified series uses 2011-12. The government has been working on a base year revision, but until MoSPI officially releases the new series, 2011-12 is the exam-correct answer.
What is the difference between basic price and factor cost?
Basic price = factor cost + production taxes − production subsidies. Production taxes (e.g., property tax, stamp duty) are levied irrespective of the volume of output sold.
Which is larger for India: GDP or GNP?
GDP is larger, because NFIA is negative for India — income outflows on foreign investment in India exceed income inflows from Indian investments and workers abroad.
Related reading
- Union Budget 2026-27: Key Allocations, Fiscal Deficit Target and Exam Takeaways
- Types of Budget Explained: Revenue vs Capital, Balanced, Deficit, Surplus & Zero-Based Budgeting for UPSC & SSC
Quick revision
- GDP at Market Price (GDPMP): valued at the prices actually paid by buyers, including indirect taxes and excluding subsidies.
- GDP at Factor Cost (GDPFC): what factors of production actually earn — GDPMP minus indirect taxes plus subsidies.
- Nominal GDP: valued at current year prices — inflated by price rise.
- Real GDP: valued at base year (constant) prices — the true measure of output growth, used in GDP growth rate calculations.
- The current base year for India’s real GDP/GVA series is 2011-12, adopted in the January 2015 national accounts revision.
- The 2015 revision also switched headline GDP to market prices and introduced GVA at basic prices, aligning with SNA 2008.
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