NATIONAL INCOME:
National income is the total value a country’s final output of all new goods and services produced in one year.
Calculating national income:
Any transaction which adds value involves three elements – expenditure by purchasers, income received by sellers, and the value of the goods traded. For example, if a student purchases a textbook for Rs 30, spending = Rs 30, income to the bookseller = Rs 30, and the value of the book = Rs 30. All of the transactions in an economy can be looked at in this way, giving us three ways to measure national income.
There are three methods of calculating national income: 1. The income method, which adds up all incomes received by the factors of production generated in the economy during a year. This includes wages from employment and self-employment, profits to firms, interest to lenders of capital and rents to owners of land. 2. The output method, which is the combined value of the new and final output produced in all sectors of the economy, including manufacturing, financial services, transport, leisure and agriculture. 3. The expenditure method, which adds up all spending in the economy by households and firms on new and final goods and services by households and firms.
A variety of measures of national income and output are used in economics to estimate total economic activity in a country or region, including gross domestic product (GDP), gross national product (GNP), net national income (NNI). All are specially concerned with counting the total amount of goods and services produced within some "boundary". The boundary is usually defined by geography or citizenship, and may also restrict the goods and services that are counted.
Gross Domestic Product (GDP):
GDP measures total income of a nation. It is the market value of all final goods and services produced within a country in a given period of time.
COMPONENTS OF GDP :
GDP(denoted by Y) is divided into