National Income Accounting | Class 12 Economics Notes
By ConceptScroll Team · Published on 17 July 2026 · 4 min read
National Income Accounting – this guide gives you a concise, exam-ready overview of National Income Accounting from Class 12 Economics, written by ConceptScroll editors and reviewed against the latest NCERT textbook.
2.2.1 The Product or Value Added Method
This subsection explains the product or value added method of calculating national income, which involves summing the value added by all firms in the economy over a year.
Value added of a firm is defined as the value of its production minus the value of intermediate goods used up in production. Intermediate goods are raw materials or inputs purchased from other firms and completely used up in production. Counting intermediate goods along with final goods would lead to double counting.
An example with two producers—farmers and bakers—is used to illustrate the concept. Farmers produce wheat worth Rs 100, selling Rs 50 to bakers. Bakers use Rs 50 worth of wheat to produce bread worth Rs 200. Total production is not Rs 300 (100 + 200) because Rs 50 worth of wheat is counted twice. The value added by bakers is Rs 200 - Rs 50 = Rs 150. Total value added is Rs 100 (farmers) + Rs 150 (bakers) = Rs 250.
Value added is distributed among factors of production as wages, interest, profits, and rents. Value added is a flow variable measured over a period (usually a year).
The subsection also discusses depreciation (consumption of fixed capital), which accounts for wear and tear of capital goods. Gross value added includes depreciation; net value added deducts depreciation.
Inventories (stocks of unsold goods or raw materials) are introduced as stock variables. Change in inventories during a year is a flow and treated as investment. Planned and unplanned changes in inventories are explained with examples.
The formula for gross value added of a firm i is: Gross Value Added (GVA_i) = Value of output produced (Q_i) - Value of intermediate goods used (Z_i)
Or equivalently: GVA_i = Value of sales (V_i) + Change in inventories (A_i) - Value of intermediate goods used (Z_i)
Summing gross value added across all firms gives Gross Domestic Product (GDP): GDP = Σ GVA_i for i = 1 to N firms.
This method avoids double counting and measures the aggregate value of final goods and services produced in the economy.
📊 Diagram: Table on page 9 (4×3)
🧪 Activity: No specific activity in this subsection.
🔗 Connection: Leads to subsection 2.2.2 which explains the expenditure method.
Table on page 9 (4×3)
| Farmer | Baker | |
|---|---|---|
| Total production | 100 | 200 |
| Intermediate goods used | 0 | 50 |
| Value added | 100 | 200 – 50 =150 |
Table on page 25 (9×2)
| Rs (crore) | |
|---|---|
| (a) Net Domestic Product at factor cost | 8,000 |
| (b) Net Factor Income from abroad | 200 |
| (c) Undisbursed Profit | 1,000 |
| (d) Corporate Tax | 500 |
| (e) Interest Received by Households | 1,500 |
| (f) Interest Paid by Households | 1,200 |
| (g) Transfer Income | 300 |
| (h) Personal Tax | 500 |
Table on page 27 (12×3)
| S.No. | Item | (Provisional Estimates) 2024-25 (Rs. In Crore) |
|---|---|---|
| 1. | Private Final Consumption Expenditure (PFCE) | 10619579 |
| 2. | Government Final Consumption Expenditure (GFCE) | 1707730 |
| 3. | Gross Fixed Capital Formation (GFCF) | 6333084 |
| 4. | Change in Stocks | 319228 |
| 5. | Valuables | 270758 |
| Investment (3+4+5) | 6923070 | |
| 6. | Exports of Goods and Services | 4068098 |
| 7. | Imports of Goods and Services | 4229390 |
| Net Exports (6-7) | 161292 | |
| 8. | Discrepancies | 292131 |
| 9. | GDP (1+2+3+4+5+6-7+8) | 187955 |
Frequently asked questions
2. OF THE FOLLOWING WHICH IS THE BEST INDICATOR OF ECONOMIC WELFARE?
GDP AT CONSTANT PRICE
Cardinal concept of utility is given by
Marshall
3. WHICH INCOME IS NOT PART OF INDIA'S DOMESTIC PRODUCT AT FACTOR COST?
NET FACTOR INCOME FROM ABROAD
7. GDPMP = GNPMP WHEN
NET FACTOR INCOME FROM ABROAD IS ZERO
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- बाज़ार संतुलन | Class 12 Economics Notes
Clear NCERT-aligned notes on बाज़ार संतुलन for Class 12 Economics.
- बाज़ार संतुलन | Class 12 Economics Notes
Clear NCERT-aligned notes on बाज़ार संतुलन for Class 12 Economics.
- बाज़ार संतुलन | Class 12 Economics Notes
Clear NCERT-aligned notes on बाज़ार संतुलन for Class 12 Economics.