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Meaning of National Income

  • Definition of National Income

    • National income is defined as the aggregate of money value of the annual flow of final goods and services in the economy during a given period.
    • According to Paul Studenski, national income is both a flow of goods and services and inflow of money incomes; thus, it is often referred to as national product as well.

  • Flow of National Income

    • The flow of national income begins when production units combine capital and labor to produce goods and services.
    • This flow is referred to as Gross National Product (GNP).

  • Gross National Product (GNP)

    • GNP is the value of all final goods and services produced by domestically owned factors of production within a specific period (usually annually).
      • Examples included in GNP:
      • Goods: Houses, food grains
      • Services: Broker's services, economist's lectures
    • The output of each of these is valued at its market price, and the total value is calculated for GNP.

  • Gross National Income (GNI)

    • GNI comprises the total value produced within a country plus income received from abroad, minus payments made to other countries.

  • Key Characteristics

    • Aggregative Value Concept
      • National income uses money value as a common denominator to aggregate various economic activities types.
    • Flow Concept
      • It represents a specific amount of aggregate production per unit of time, conventionally one year.
      • Indicates output during a particular year.
    • Final Products vs. Total Value
      • National income measures only the aggregate value of final products to avoid double counting.
      • Example of avoiding double counting:
      • The full price of an automobile includes intermediate goods. Only the value of the final product (the car) is counted in GNP, while values of components (intermediate goods) like parts or flour for making bread are excluded.

National Aggregates (Important Concepts)

  • Purpose of Measurement

    • National income can be examined as an aggregate of various component flows that describe the economic system's structure.
    • There are various measures of aggregate incomes differing in scope and coverage.

  • Gross National Product at Market Prices (GNP)

    • Represents the market value of the aggregate final product before any capital consumption deductions and attributable to domestic factors of production.
    • Important phrases:
      • Gross: No allowance for capital consumption made (depreciation not deducted).
      • Net: Provision for capital consumption already considered (depreciation deducted).
      • Market Prices: Specifies the valuation criterion.
    • Alternative specifications can include 'net', 'domestic', and 'at factor cost'.

Gross and Net Concepts

  • Understanding 'Gross' and 'Net'
    • Gross indicates no deductions for depreciation.
    • Net signifies that depreciation has been accounted for, allowing for capital consumption.
    • Caution:
      • The difference between the gross aggregate and the net aggregate represents depreciation.
    • Relationships:
      • GNP<em>extatmarketprice=NNP</em>extatmarketprice+extdepreciationGNP<em>{ ext{at market price}} = NNP</em>{ ext{at market price}} + ext{depreciation}
      • GNP<em>extatfactorcost=NNP</em>extatfactorcost+extdepreciationGNP<em>{ ext{at factor cost}} = NNP</em>{ ext{at factor cost}} + ext{depreciation}

National and Domestic Concepts

  • National Income versus Domestic Product
    • The national product encompasses income accrued to residents of the country; income may also arise from residents' activities abroad.
    • Domestic product is measured based on activities within the country, regardless of the residency of economic agents.
    • Net Factor Income from Abroad
      • The difference between national and domestic income due to international activities.
      • Formula:
      • extNationalIncome=extDomesticProduct+extNetFactorIncomefromAbroadext{National Income} = ext{Domestic Product} + ext{Net Factor Income from Abroad}
      • In a closed economy, the national and domestic incomes are synonymous.

Valuation of National Products

  • Market Prices vs. Factor Costs
    • Market Prices: Indicates the total amount paid by final buyers for the final product.
    • Factor Costs: Represents the total amounts earned by factors of production for their contributions to output.
    • Relationship:
      • GNP<em>extmarketprices=GNP</em>extfactorcosts+extindirecttaxes−extsubsidiesGNP<em>{ ext{market prices}} = GNP</em>{ ext{factor costs}} + ext{indirect taxes} - ext{subsidies}
    • Caution:
      • If undefined, aggregates are assumed to be at market prices.

Review of Concepts

  • Classification of Aggregates
    Category A:

    • GNP
    • NNP

    Category B:

    • GDP
    • NDP

  • Key Differences

    • Differences between aggregates in Category A and B arise from net factor incomes from abroad.
    • The difference between Type 1 and Type 2 aggregates is due to indirect taxes less subsidies.
    • The difference between aggregates of each type is depreciation.

Gross Domestic Product (GDP)

  • Definition of GDP

    • GDP measures total income generated from production within the territorial boundaries of an economy, regardless of the residency of ownership.
    • Formula:
      • GDP=GNP−extNetFactorIncomefromAbroadGDP = GNP - ext{Net Factor Income from Abroad}

  • Example Calculation

    • Suppose GNP in 2010-2011 is ₹8,00,000 million and the factor incomes received are ₹60,000 million and paid ₹70,000 million.
      • Calculation of GDP:
      • GDP=8,00,000−(70,000−60,000)=₹7,90,000millionGDP = 8,00,000 - (70,000 - 60,000) = ₹7,90,000 million