Understanding National Income Concepts

National Income represents the total value of goods and services produced by the residents of a country during a specific period, usually a year. It measures the total economic activity and the income earned by the factors of production.

Key Economic Terms for National Income Calculation

To correctly identify National Income, it's important to understand the different terms used in national accounting:

• Gross vs. Net: Gross measures the total value including depreciation (consumption of fixed capital). Net measures the value after subtracting depreciation.
• Domestic vs. National: Domestic refers to production within the geographical boundaries of a country. National refers to production by the normal residents of a country, whether within the country or abroad. The difference is Net Factor Income from Abroad (NFIA).
• Market Price vs. Factor Cost: Market Price is the price at which goods and services are sold in the market. It includes indirect taxes and excludes subsidies. Factor Cost is the cost of the factors of production (land, labor, capital, entrepreneurship). It excludes indirect taxes and includes subsidies. The difference is Net Indirect Taxes (NIT), which is Indirect Taxes minus Subsidies.

Defining National Income

National Income is specifically defined as the sum of all factor incomes earned by the normal residents of a country during an accounting year. This corresponds to the Net National Product at Factor Cost.

In symbols:

• Net = Gross - Depreciation
• National = Domestic + Net Factor Income from Abroad (NFIA)
• Factor Cost (FC) = Market Price (MP) - Net Indirect Taxes (NIT)

Therefore, National Income is represented by \( NNP_{FC} \).

Analyzing the Options

Let's look at the given options based on our understanding:

1. GDPMP: Gross Domestic Product at Market Price. This is a measure of total production within the domestic territory at market prices, including depreciation. It is not National Income.
2. GDPFC: Gross Domestic Product at Factor Cost. This is a measure of total production within the domestic territory at factor cost, including depreciation. It is not National Income.
3. NNPMP: Net National Product at Market Price. This is a measure of total production by residents, after accounting for depreciation, but valued at market prices (including NIT). It is not National Income (which is at factor cost).
4. NNPFC: Net National Product at Factor Cost. This is a measure of the total factor income earned by normal residents, after accounting for depreciation. This precisely matches the definition of National Income.

Based on the standard definition in economics, National Income is always referred to as Net National Product at Factor Cost.

Thus, the term that is called National Income of an economy is NNP_FC.

Revision Table: National Income Terms

Additional Information on National Income Components

Understanding the components that link these aggregates is crucial:

• Depreciation: This is the wear and tear of fixed assets during the process of production. Subtracting depreciation from a Gross value gives the corresponding Net value.
• Net Factor Income from Abroad (NFIA): This is the difference between the factor income earned by normal residents from the rest of the world and the factor income paid to non-residents in the domestic territory. Adding NFIA to a Domestic value gives the corresponding National value. NFIA can be positive, negative, or zero.
• Net Indirect Taxes (NIT): This is the difference between indirect taxes (like GST, customs duties) and subsidies given by the government. Subtracting NIT from a Market Price value gives the corresponding Factor Cost value. NIT can also be positive, negative (if subsidies > indirect taxes), or zero.

National Income (NNP_FC) focuses on the income earned by residents from factor services, reflecting the true cost of production factors.