Methods of Measuring National Income — Value Added, Expenditure & Income Method

Concept

GDP_MP = Sum of Gross Value Added at Market Price (GVA_MP) by all producing units in all sectors of the economy.

${\text{GVA}}_{MP}=\text{Value of Output}-\text{Value of Intermediate Consumption}$

${\text{GDP}}_{MP}=\sum {\text{GVA}}_{MP}\text{ (across all sectors)}$

Three Sectors of Production

Precautions — What to INCLUDE and EXCLUDE

Fully Worked Example — Value Added Method

Calculate National Income (NNP_FC) from the following data (₹ crore):

Additional data: NFIA = ₹200 crore; Depreciation = ₹500 crore; NIT = ₹800 crore.

GNP_MP = 10,500 + 200 = 10,700

NNP_MP = 10,700 − 500 = 10,200

National Income (NNP_FC) = 10,200 − 800 = ₹9,400 crore

Concept

GDP_MP = Sum of all final expenditures on goods and services produced in the domestic territory during one year.

${\text{GDP}}_{MP}=C+I+G+(X-M)$

Components — Detailed Breakdown

Precautions — Expenditure Method

• Only final expenditure — not intermediate. Government buying cement to build a road = final (capital) expenditure. A contractor buying cement to supply to the government = intermediate.
• Transfer payments excluded: Pensions, scholarships, unemployment allowances — no productive service in return; do not count.
• Purchases of second-hand goods excluded: No new production. However, the broker's commission on the sale of a second-hand car IS included (broker performed a service).
• Change in stocks included: If a firm produces 100 units but sells only 80 — the 20 units added to inventory count as investment (GFCF component).

Fully Worked Example — Expenditure Method

Calculate GDP_MP and National Income (₹ crore):

Step 1 — GDP_MP:

GDP_MP = C + G + GFCF + Change in Stocks + (X − M) = 8,000 + 2,000 + 3,000 + 200 + (1,500 − 1,200) = ₹13,500 crore

Step 2 — National Income:

GNP_MP = 13,500 + 150 = 13,650 | NNP_MP = 13,650 − 400 = 13,250

National Income (NNP_FC) = 13,250 − 600 = ₹12,650 crore

Concept

GDP_MP = Sum of all factor incomes paid to factors of production, plus depreciation, plus net indirect taxes.

${\text{GDP}}_{MP}=\text{CoE}+\text{OS}+\text{Mixed Income}+\text{Depreciation}+\text{NIT}$

Equivalently: ${\text{NDP}}_{FC}=\text{CoE}+\text{OS}+\text{Mixed Income}$ (this is the simplest starting point)

Components of Income Method — Detailed

Income Method — The Shorter Path to National Income

A key shortcut: NDP_FC = CoE + OS + Mixed Income (just the three factor income components — no depreciation, no NIT). Then:

National Income (NNP_FC) = NDP_FC + NFIA

This is the most efficient path when the question asks only for National Income and gives factor incomes directly.

Precautions — Income Method

• Transfer incomes excluded: Pensions, gifts, scholarships, unemployment allowances — no productive service in return.
• Windfall gains excluded: Lottery winnings, gambling — not from production.
• Interest on national/public debt excluded: This is a transfer (government pays interest on borrowings, not for current productive service).
• Capital gains excluded: Profit from selling shares/property at higher price — no new production.
• Imputed rent of owner-occupied houses included: Even if a person lives in their own home, the market equivalent rent is included.

Fully Worked Example — Income Method

Calculate NDP_FC, GDP_MP and National Income (₹ crore):

Step 1 — NDP_FC (factor incomes only):

NDP_FC = CoE + OS + Mixed = 6,000 + 3,000 + 2,000 = ₹11,000 crore

Step 2 — GDP_FC and GDP_MP:

GDP_FC = NDP_FC + Depreciation = 11,000 + 500 = 11,500

GDP_MP = GDP_FC + NIT = 11,500 + 700 = ₹12,200 crore

Step 3 — National Income (shortest path):

National Income (NNP_FC) = NDP_FC + NFIA = 11,000 + 300 = ₹11,300 crore

Cross-check: GDP_MP + NFIA − Depreciation − NIT = 12,200 + 300 − 500 − 700 = 11,300 ✓