Q.What are the various methods of calculating National Income? Explain them.
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Start your 14-day free trial to unlock the full solution →National income is the money value of all final goods and services produced in a country in a year. It is measured by three methods that must give the same result: the Product (Value Added) Method, the Income Method, and the Expenditure Method. Each looks at the same circular flow from a different angle - production, factor incomes, and final spending.
Meaning
National income is the total money value of all final goods and services produced by the normal residents of a country during an accounting year. Because every unit of production generates an equal amount of income and that income is finally spent, national income can be measured at three points of the circular flow.
1. Product Method (Value Added Method)
Under this method we add up the value added by every producing enterprise in all sectors (primary, secondary, tertiary). Value added = value of output minus the value of intermediate goods used. This avoids the problem of double counting.
Steps:
- Classify all producing units into sectors.
- Find the gross value added at market price of each sector.
- Add them to get GDP at market price.
- Deduct depreciation and net indirect taxes, and add net factor income from abroad, to arrive at National Income (NNP at factor cost).
2. Income Method
Under this method we add up all the factor incomes earned by the owners of the factors of production within the domestic territory. These are:
- Rent (income from land),
- Wages and salaries (compensation of employees, income from labour),
- Interest (income from capital),
- Profit (income of the entrepreneur),
- Mixed income of the self-employed.
The sum gives the Net Domestic Product at factor cost; adding net factor income from abroad gives National Income.
3. Expenditure Method
Under this method we add up all final expenditures on goods and services in the economy:
- Private final consumption expenditure (C),
- Government final consumption expenditure (G),
- Gross domestic capital formation / investment (I),
- Net exports (exports minus imports, X - M).
That is, GDP at market price = C + I + G + (X - M). After adjusting for depreciation, net indirect taxes and net factor income from abroad, we again obtain National Income.
Why the three are equal
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