What is national income?
Answer:
The labour and capital of a country acting on its natural resources 
produce annually a certain net aggregate of commodities material an 
immaterial including services of all kinds- 
Marshall
National income consists solely of services as received by ultimate 
consumers, whether from their material or from their human 
environments- 
Fisher
A national income estimate measures the volume of commodities and 
services turned out during a given period counted without duplication- 
National Income Committee of India (1951)
Gross national product at market prices is the market value of the 
produce before deduction of provisions for the consumption of fixed 
capital distributable to the factors of production supplied by the 
normal residents of the given country- 
United Nations Department of Economic Affairs
National income is a collection of goods and services reduced to a common basis by being measured in terms of money- 
Hicks
Therefore, all the above definitions make it clear that national income is the monetary measure of-
·         The net value of all products and services
·          In an economy during a year
·         Counted without duplication
·         After allowing for depression
·         Both in the public and private sector of products and services
·         In consumption and capital goods sector
·         The net gains from international transactions.
 
 
What is gross national product (G.N.P.)?
Answer:
It is the basic measure of a nation’s output stated in terms of money
 representing the total value of a nation’s annual output. It is 
evaluated in terms of market prices. It includes all the economic 
productions in the economy from apples and automobiles to zinc and 
zippers.
G.N.P. is defined as the money value of the national production for any given period. Here we take into account:
·         The money value of the final goods and services produced in
 the economy to avoid double counting. Intermediate products are 
excluded from it.
·          The money value of only currently produced goods and 
services as G.N.P. is a measure of the economy’s productivity during the
 year.
·         The word gross has significance. We do not deduct the 
depreciation or replacement of the fixed assets. In the process of 
production there is wear and tear of fixed assets. This depreciation is 
loss to the economy and it will not be deducted from GNP produced in the
 economy.
 
What is net national product (N.N.P.)?
Answer:
It refers to the net production of goods and services in a country 
during the year. It is G.N.P. less depreciation during the year.
N.N.P. = G.N.P. - depreciation for the given year
It is also called national income at market prices. It is a useful 
concept in study of growth economics as it takes into consideration the 
net increase in the total production of the country.
 
What is national income at factor cost (N.I.FC)?
Answer:
It is the total of all incomes earned by the owner of factors of production for their contribution of factors of production.
Therefore, for calculating it, such payments which are not made for 
any productive service is not included. Example- an individual may get 
gifts, transfer payments from business, etc. which form a part of his 
income but, since he has not rendered any service to get from them, they
 do not enter the calculation of national income at factor cost.
N.I.FC= N.N.P. - indirect taxes+ subsidies
It is therefore the aggregation of factor earnings. It does not 
include capital consumption allowance government business and individual
 transfer payments and indirect taxes. All these do not reach the 
factors of production. Similarly, if the government pays any subsidy in 
support of any industry whose cost of production is high, these 
subsidies have to be added.
 
What is personal income (P.I.)?
Answer:
This is the actual income received by the individuals and households 
in the country from all sources. It denotes aggregate money payments 
received by the people by way of wage, interest, profits, and rents. It 
is the spendable income at current prices available to individuals. 
Corporate income taxes and payment towards social security measured will
 not be available for individuals, so these have to be deducted from 
what is earned. Payments such as old age pensions, widow pensions, etc. 
that accrue to people have to be added.
P.I. = N.I. – corporate taxes – undistributed corporate profits – social security contributions + transfer payments
Transfer payments may be by government or business transfers, interest paid by government, dividends, etc.
 
What is disposable personal income (D.P.I.)?
Answer:
The whole of personal income is not available for consumption as 
personal direct taxes have to be paid. What is left after payment of 
personal direct taxes is call disposable personal income.
D.P.I = P.I. – personal taxes, property taxes and insurance payments
This is the amount available for individuals and households for 
consumption. It is not that the entire D.P.I. is spent on consumption. A
 part of it may be saved, therefore
D.P.I. = consumption + savings
What remains after saving is called 
the personal outlay, which represents the community’s demand for goods and services.
 
Discuss the various methods of calculating national income.
Answer:
There are three methods by which national income can be calculated-
        I.            Product Method
This is also called the 
output method, the inventory method or the census method. It consists of finding out the market value of all the goods and services produced during a year.
According to this method the economy is classified into different sectors, namely
·         
Direct sector: in this sector the
 value of services of such professions like doctors, dramatics, 
soldiers, politicians, etc., are taken by equating to their services.
·         
Agriculture industry
·         
International transaction sector:
 in this sector, we take into account the value of goods exported and 
imported payment from abroad, payments to other countries.
In each sector we make an inventory of goods produced and find out 
the end product making an addition to the value of goods. The value 
added method can be followed in order to avoid double counting. The 
value added of a firm is its output less whatever it purchases from 
other firms such as raw materials, and other inputs.
This method has a merit because it helps us to have a comparative 
idea of the importance of various activities in economy like 
agriculture, manufacturing, trade, etc. However in advanced countries 
this method may be successful as it is very easy to get data from 
government records. But in under developed countries this method may 
give rise to various problems like imputation of money values to non- 
monetized sector.
      II.            Income Method
This method refers to the gross national income obtained by adding 
together wages and salaries, interests, profits and rents of persons and
 institution and including government incomes are earned either from 
property or through work. To arrive at the totality of income of nation,
 the following procedure will be adopted:
a)      Net rents include the rental value of owner occupied houses.
b)      Wages, salaries and all such earnings of person employed, pensions are excluded.
c)      Earnings by way of interest.
d)      Income of joint stock companies.
e)      Income from overseas investment.
This method gives national income at factor cost.
    III.            Expenditure Method
This method is also called the 
flow of product approach (by American economist Samuelson) or the 
outlay method.
             Here we take into account the expenditure on finished products-
·         Expenditure by consumers on goods and services.
·         Expenditure by producers on investment of goods.
·         Expenditure by government on consumption as well as capital goods.
To this we add money received from abroad through trade and other payments. This figure thus arrived at will give us G.N.P.
The merit of this method is that it believes in the identity between national expenditure, income and total product.
 
Whichever method we use the result should be more or less the same. 
In other words, they can be used to cross-check reliability of each 
other.
 
 
 
 
 
 
What are the factors that determine national income?
Answer:
Factors determining national income can be discussed as follows-
Ø  
Quality and quantity of factors of production: the
 quality and quantity of land, the climate, the rainfall, etc., 
determine the quantity and quality of agricultural production. This 
determines the size of national income. The quantity of labour has 
double influence since labour is both a factor of production as well as 
the consumer of what is produced. The quality of labour depends upon 
intelligence, training, which in turn decides the volume of industrial 
productivity. This will have decisive influence on output. Likewise, the
 quantity and quality of entrepreneurial ability is also a main element 
in the determination of national income.
Ø  
State of technical know-how: the extent 
of technical know-how and technology in production determine the capital
 formation in the country. A country with abundant resources will be 
dormant without any determination if the resources are not 
scientifically exploited. Natural resources combined with advanced 
technology will go a long way in increasing the size of national income.
Ø  
Political stability: the key to increase
 the national income rests with important factors like capital 
formation, natural resources, technical know-how and political 
stability.
                                                                                                                                               
What are the difficulties in calculation of national income?
Answer:
The measurement of national income is beset with difficulties. In 
under developed countries these difficulties are more prominent. The 
difficulties in calculation of national income can be discussed as 
follows:
·         
Conceptual difficulties: there 
has been a difference of opinion regarding the term ‘nation’ in the 
concept of national income. It has to define exactly, whether it is 
geographical entity of the country or the nationals including those 
residing abroad. Since national income constitutes a quantitative 
measure of economics activity rather than verbal description. Since 
everything has to be equated to the money value, services produced in 
economy for love of humanity, affection and philosophy could not be 
taken into consideration in calculating national income.
·         
Overlapping of occupations: in 
backward economies there is an overlapping of occupation in rural sector
 which makes it difficult to know the income by origin. A worker in a 
peak season works in a farm, drives a country cart in off season. Takes 
up unskilled work, etc. similarly, the village money lender combines his
 profession with the cultivating of his farm.
·         
Difficulty in value estimation: in
 backward areas, the cultivators, artisans and cottage industry workers 
do not have a fair idea of the expenses of their occupation. Hence the 
net value of their products cannot be estimated precisely.
·         
Non- monetized sector: barter 
dealing and non-monetized sector creates the problem of inputting the 
value of their produce and services and by guess work and approximation.
·         
Incomplete government records: due
 to ignorance and illiteracy in backward areas, the data may not be 
available and if available, may be unreliable. Also, the figures 
furnished by government officials may not be from reliable sources and 
data is not current.
·         
Problems in agricultural sector: in
 agricultural activities there is a good deal of guess work in data 
relating to cropwise production and in figures relating to animals and 
forest products.
·         
Problems in industrial sector: data
 relating to output, cost, etc. are available only in big units. The 
small units do not maintain these figures correctly. The village money 
lenders and indigenous bankers maintain absolute secret of their and 
they do not furnish correct information.
·         
Non-applicability of a uniform formula:
 in a big country where wide disparities and regional differences, a 
uniform formula cannot be applied. The data of one region cannot be 
applied to another region with minor modification. Every region would be
 a separate entity requiring specialized approach suited only to that 
region.
·         
Double-counting: the error of double-counting is another obstacle to be avoided in the calculation of national income.
·         
Inefficient data collection: the 
machinery for collecting statistical data may not be efficient. The 
investigators, preparation of adhoc figures, making sample surveys, etc.
 
What are the uses of national income statistics?
Answers:
National income figures help governments in planning, policy making, 
preparation of budgets and forecasting the level of economic activity.
Ø  
Formulation of economic policies: national
 income statistics are valuable instruments of economic analysis and a 
guide to economic policies to be pursued. It is more useful in context 
of planning and formulation of realistic plans.
Ø  
Studying economic structure: it gives an
 idea of the structure of the economy. It helps to make inter- sectoral 
comparisons and to study the rate of growth of the economy. The growth 
of national income is an index of the growth of the productive capacity 
of an economy.
Ø  
Inter- sectoral comparisons: it helps to
 study inter-sectoral growth. Such comparisons are useful. Share of 
various sectors can be studied to find out structural defects and 
weaknesses of the economy.
Ø  
Indicator of economic welfare: it 
enables us to study per capita income or per capita consumption which 
are general indicators of economic growth. But it is not helpful in 
revealing distribution of income in the society.
Ø  
Making international comparisons: national income estimates enables us to make international comparisons and standard of living of people.
Ø  
Contribution to international institutions: it shows the capacity of a country to bear some common burden of international institutions like the U.N.O.