National Income Accounting: CBSE Class 12 Economics Chapter Notes

Key Terms for National Income

National Income

It is the Net National Product at Factor Cost (NNP at FC). It represents the sum of factor incomes (rent, wages, interest, profit) earned by normal residents of a country in an accounting year.

Gross Domestic Product (GDP)

The total market value of all final goods and services produced within the domestic territory of a country during an accounting year.

Gross National Product (GNP)

The total market value of all final goods and services produced by the normal residents of a country during an accounting year. GNP = GDP + NFIA.

Net Domestic Product (NDP)

The value of final goods and services produced within the domestic territory, excluding depreciation. NDP = GDP - Depreciation.

Factor Cost (FC)

The cost incurred by producers, representing the payments made to factors of production (wages, rent, interest, profit).

Market Price (MP)

The price at which a product is sold in the market. It includes the effect of indirect taxes and subsidies. MP = FC + Net Indirect Taxes.

Net Factor Income from Abroad (NFIA)

The difference between factor income earned by our residents from the rest of the world and factor income paid to non-residents within our domestic territory.

Depreciation

Also known as Consumption of Fixed Capital. It is the loss in the value of fixed assets due to normal wear and tear and expected obsolescence.

Net Indirect Taxes (NIT)

The difference between Indirect Taxes (like GST) levied by the government and Subsidies provided by the government. NIT = Indirect Taxes - Subsidies.

Must-Remember Formulas & Conversions

• Gross ⇌ Net: Gross = Net + Depreciation | Net = Gross - Depreciation
• Domestic ⇌ National: National = Domestic + NFIA | Domestic = National - NFIA
• Market Price ⇌ Factor Cost: MP = FC + NIT | FC = MP - NIT
• Net Indirect Taxes (NIT) = Indirect Taxes - Subsidies
• Net Factor Income from Abroad (NFIA) = Factor income from abroad - Factor income to abroad
• GDP at MP (Expenditure Method) = C + I + G + (X-M)
• NDP at FC (Income Method) = Compensation of Employees + Operating Surplus + Mixed Income
• National Income is always NNP at FC.
• Gross Domestic Capital Formation (GDCF) = Gross Fixed Capital Formation + Change in Stock (Inventory Investment)
• Change in Stock = Closing Stock - Opening Stock

Three Methods to Calculate National Income

1. Value Added Method (Product Method) —
2. Income Method —
3. Expenditure Method —

Understanding and Avoiding Double Counting

The problem of double counting is a major error that can occur while calculating national income. It refers to the mistake of counting the value of a commodity more than once in its journey from raw material to final product. For example, if we count the value of wheat, then the value of flour made from that wheat, and finally the value of bread made from that flour, we have counted the value of wheat three times. This leads to a significant overestimation of the national income. To avoid this critical error, two methods are used:

1. Final Output Method: This is the simplest approach. It involves considering and summing up the value of only the final goods and services. In the previous example, we would only count the market value of the bread, as it is the final product sold to the consumer. The values of wheat and flour (intermediate goods) are ignored because they are already included in the price of the bread.

1. Value Added Method: This is a more robust technique. It involves calculating the value added at each stage of production. Value Added = Value of Output - Value of Intermediate Consumption. By summing up the value added by each producer (farmer, miller, baker), we arrive at the total value of the final good without any duplication. This method provides a cross-check and gives a clear picture of each sector's contribution.

Market Price vs. Factor Cost

Quick Numerical Examples

• {"title":"Example 1: Calculate NDP at FC","bodyMarkdown":"Given: GDP at MP = ₹5000 Cr, Depreciation = ₹300 Cr, Net Indirect Taxes = ₹200 Cr.\n\nSolution:\nNDP at MP = GDP at MP - Depreciation = 5000 - 300 = ₹4700 Cr\nNDP at FC = NDP at MP - Net Indirect Taxes = 4700 - 200 = ₹4500 Cr"}
• {"title":"Example 2: Calculate National Income (NNP at FC)","bodyMarkdown":"Given: Compensation of Employees = ₹2000 Cr, Operating Surplus = ₹800 Cr, Mixed Income = ₹1000 Cr, NFIA = -₹50 Cr.\n\nSolution:\nFirst, calculate NDP at FC = Comp. of Employees + Operating Surplus + Mixed Income\nNDP at FC = 2000 + 800 + 1000 = ₹3800 Cr\nNational Income (NNP at FC) = NDP at FC + NFIA = 3800 + (-50) = ₹3750 Cr"}

Common Exam Mistakes & Traps

Be extremely careful with the signs for NFIA. 'Net Factor Income to Abroad' is the negative of NFIA and must be subtracted from Domestic Income to get National Income. Also, remember that 'Gross Domestic Capital Formation' includes both fixed investment and change in stocks. Sometimes, the question gives 'Net Domestic Capital Formation'; in this case, you must add Depreciation to get the Gross value if needed for the expenditure method formula (GDP at MP). Always state the precautions for the method used, even if not explicitly asked, as it can fetch marks. Finally, double-check what the question asks for - 'Domestic Income' (NDP at FC) or 'National Income' (NNP at FC).

Test Your Understanding

• What is the difference between stock and flow variables? Give one example of each. A stock variable is measured at a specific point in time (e.g., wealth, capital on 31st March). A flow variable is measured over a period of time (e.g., income, investment during a year).
• How is Net National Product at Market Price (NNP at MP) different from National Income? National Income is Net National Product at Factor Cost (NNP at FC). The difference is Net Indirect Taxes (NIT). The formula is: NNP at FC = NNP at MP - NIT.
• If Net Factor Income from Abroad (NFIA) is negative, will GNP be greater or smaller than GDP? GNP will be smaller than GDP. The formula is GNP = GDP + NFIA. If NFIA has a negative value, it will reduce the value of GDP to arrive at GNP.
• Why are transfer payments not included in the estimation of National Income? Transfer payments (like pensions, unemployment benefits) are unilateral payments for which no goods or services are produced in return. Including them would incorrectly inflate the national income figure, which is meant to measure the economy's production.

National Income Accounting FAQs

Frequently Asked Questions