In India, on the one hand, Per Capita Income is low and on the other hand, there is large inequality in the distribution of wealth and income, according to Human Development Reports. Lack of opportunity means that its most valuable assets its people is not being fully used. It is appropriate reason of income gap.

The difference between Gross National Product and Depreciation is called Net National Product (NNP). NNP at factor cost is the net output evaluated at factor prices. It includes income earned by factor of production through participation in the production process, such as wages and salaries, rents, profits etc.

It is also called National Income. NNPFC = NNPmp – Indirect taxes

+ Subsidies = National Income. But now NNP_MP is National Income

Income method measures National Income from the side of payments made to the primary factor of production for their productive services in an accounting year.

The components of factor income are (i) Employee’s Compensation, (ii) Profit, (iii) Rent, (iv) Interest, (v) Mixed income and (vi) Royalty.

Profit, rent, interest and other mixed income are jointly known as operating surplus.

National Income of a country can be defined as the total market value of all final goods and services produced in the economy in a year. In expenditure method, the National Income is measured by adding up the four flows, - namely C, I, G, X and M.

Thus, Y = C+1+G + (X-M) + (X- M) Where,

C = Total consumption expenditure

I = Total investment expenditure

G = Total government expenditure

X = Export,

M = Import