LEARNING OUTCOME 5

NATIONAL INCOME

NATIONAL INCOME

National Income is a measure of the value of economic activity in an economy.

Nominal National Income is the money value , whereas Real eliminates the effect of inflation .

National Income The basis of National Income is Aggregate Monetary Demand which comprises: Consumption Spending (C) + Investment Spending (I) + Government Spending (G) + In an open (trading) economy, National Income comprises: Exports (X)

Consumption(C) + Investment(I) + Government(G) + Exports(X) – Saving(S) – Taxation(T) - Imports(M)

INJECTIONS Government Investment Exports (M) (G) (C) (I) Firms CIRCULAR FLOW OF INCOME (Y) (X) WITHDRAWALS Saving Taxation Imports (S) Households (T)

NATIONAL INCOME

As long as total injections Investment + Government + Exports

equal =

total withdrawals Saving + Taxation + Imports national income is in employment will employment will rise fall .

.

equilibrium .

If injections are greater than withdrawals national income, output and If injections are lower than withdrawals national income, output and Similar to water in a bath, when the taps inject water into the bath faster than the plug withdraws it, then the water level rises. If the plug withdraws water faster than the taps inject it, the water level falls.

THE MULTIPLIER

The proportion of any rise in income which consumers save is known as the Marginal Propensity to Save .

Any additional injection will be multiplied by the inverse of Propensity to Save or 1 ie 1 the Marginal MPS (T) (M) Marginal Leakages This is known as the multiplier effect and can be used as follows: If consumers choose to spend two thirds of any rise in income then they save the other one third. This means the multiplier is 1 ie 3.

1/3 When the multiplier has a value of 3 this means a Government, seeking to generate additional national income of £4.5 bn, only requires to spend an additional £1.5 bn, since a multiplier of 3 will generate the desired £4.5 bn (£1.5 X 3 = £4.5).

The reason for the multiplier effect is because when 2/3 of any extra income is spent, creating increased demand. Manufacturers will employ extra resources to increase output to meet the demand. When these extra resources are paid for, extra income is earned, 2/3 of which will be spent and so the process goes on.

An additional injection therefore has a ‘multiple’ rather than a ‘one-off’ effect.

NATIONAL INCOME

National income in an economy is important since it is the level of economic activity which creates employment for labour and all the other resources.

E=Y If we plot all spending on the graph starting with Consumption spending (C), Expenditure C C+I+G C+I then add on Investment spending (I), then Government spending (G) - C+I+G represents Aggregate Monetary Demand.

When AMD is insufficient to employ all resources, there is a deflationary gap .

Income FE Keynesian theory would suggest that a Government could increase G and put policies into effect to stimulate C and I in order to make up the gap and create a level of national income sufficient to achieve full employment.

Similarly where the level of AMD is higher than necessary for full employment there is an inflationary gap – too much demand for the capacity available.

Keynesian theory would suggest a Government could decrease G and use policies to reduce C and I to eliminate the inflationary gap.

3 METHODS OF CALCULATING NATIONAL INCOME

INCOME METHOD OUTPUT METHOD EXPENDITURE METHOD Gross Domestic Income Gross Domestic Product Gross Domestic Expenditure

+

Net Income from Overseas

=

Gross National Income

-

Depreciation

=

Net National Income =

+

Net Income from Overseas

= +

Net Income from Overseas and Exports

-

Imports

=

Gross National Product

-

Depreciation

=

Net National Product =

=

Gross National Expenditure

+

subsidies

= -

Depreciation tax Gross National Expenditure Net National Expenditure

PROBLEMS WITH NATIONAL INCOME CALCULATIONS

INCOME METHOD: Only incomes which are earned from productive activity should be counted.

Transfer incomes must not be included since these are paid out of the axes paid by income earners and have already been counted.

Transfer incomes include pensions, benefits and disability allowances.

OUTPUT METHOD: Care must be taken to avoid double counting by costing production at final Increase in value of stock must be due to real additions value.

to stock and not inflation Much production is in the ’ black economy’ and therefore goes unrecorded.

EXPENDITURE METHOD: Should be expressed at ‘factor cost’ by adding back subsidies given and deducting taxes taken.

ALL METHODS: Depreciation must be deducted since this is value attributed to income earned from, or output produced for, or expenditure on, replacement goods (which do not increase the total stock of goods available) and not additional new goods.

USING NATIONAL INCOME STATISTICS

Allows comparisons of standard of living is given to: • differing populations between countries provided consideration – national income per head should be used • average personal disposable income would take differing tax rates into account • consideration is given to how national income is distributed within countries • differences in hours worked and conditions of work should be considered • social costs and benefits • exchange rate differences between countries • different countries spend different proportions of national income on capital goods and defence which do not immediately impact on standard of living Allows comparisons over time • the rate of inflation provided consideration is given to: therefore • use ‘real’ values rather than’ nominal’ values

QUIZ What does AMD stand for?

What makes up AMD?

Name 3 injections.

Name 3 withdrawals.

What is national income equilibrium?

Describe the multiplier effect.

How is the value of the multiplier determined?

What is an inflationary gap?

AGGREGATE MONETARY DEMAND CONSUMPTION, INVESTMENT, GOVERNMENT SPENDING AND EXPORT INVESTMENT, GOVERNMENT SPENDING AND EXPORTS SAVING, TAXATION AND IMPORTS LEVEL AT WHICH INJECTIONS = WITHDRAWALS EXTRA SPENDING MULTIPLIED UP GENERATING NATIONAL INCOME LARGER THAN INJECTION INVERSE OF MARGINAL PROPENSITY TO LEAK SPENDING TOO HIGH FOR AVAILABLE CAPACITY What is a deflationary gap?

What are 3 methods of calculating national income?

When using national income statistics what must be borne in mind?

SPENDING TOO LOW FOR AVAILABLE CAPACITY INCOME, OUTPUT AND EXPENDITURE DIFFERENCES IN POPULATION, INFLATION, WORK CONDITIONS, DISTRIBUTION OF WEALTH ………….