Expenditure Multiplier Application

Expenditure multiplier application
In simple words, expenditure multiplier said to be in play when an investment fell by $100
billion, its impact on an economy not remain only limited $ 100 billion, in fact, its impact felt
many times more than $ 100 billion that is what multiplier mean. It can be 2 times, 3 times or
even 5 times, it depends on multiplier number. Investment or expenditure can be of many
types, it can be consumption, investment, Government expenditure or net of exports and
imports, its impact on an economy have more than proportional change in expenditure or
investment. (Ceteris paribus) This is what multiplier mean for an economy. As per the
Keynsean economics, higher the aggregate demand, higher will be economic activity.
Aggregate expenditure circulates in an economy: that is popularly known as circular flow of
expenditure/income in an economy. It works like this, households buy from firms, firms pay
workers and suppliers, workers and suppliers buy goods from other firms, those firms pay
their workers and suppliers, and so on so forth. In this way original expenditure converted to
many time through the impact of multiplier, this is what expenditure multiplier mean.
GDP (Gross Domestic Product):
Monetary value of final (not intermediate) Goods and Services produced in an economy
(domestic territory) in a financial year.
GDP = C + I + G + (X – M) = Private consumption + gross consumption +
government spending + (export-imports)
NDP (Net Domestic Product):
NDP = GDP - Depreciation or (wear and tear)
Fiscal Policy and Monetary policy with diagram
(ceteris paribus applicable wherever it is required)
Fiscal policy is implemented by government of that country: It is done by influencing
investment, employment, output and income, (ceteris paribus) through following two ways:
a) Increase/decrease in expenditure and

Source: http://www.economicsdiscussion.net/keynesian-economics/policies/monetary-and-
fiscal-policy-effects-and-changes-with-diagram/15779
When government increases the expenditure, we see that there is a shifts in the IS
curve from IS0 to IS1, i.e. toward right as shown in Fig. 10.1. And as a result, there is
rise in income from Y0to Y1. Just opposite happens when government decreases their
expenditure.
b) Increase/decrease in taxes
Source: http://www.economicsdiscussion.net/keynesian-economics/policies/monetary-and-
fiscal-policy-effects-and-changes-with-diagram/15779
Similarly, when there is an increase in taxes from T0 to T1 , we can easily observe, there is
a shift in the IS curve i.e. towards the left from IS0 (T0) to IS, (T1). Since we know that taxes
are nothing but a leakage from the circular flow of income, so Y falls from Y0 to Y1 and the
rates falls from r0 to r, and finally the market is at equilibrium. Just opposite happens when
government reduces the tax rate.

Monetary policy implemented by Central Bank of a country:
The government, through their Central Bank implement monetary policy, which ultimately
effects employment, investment, output and income in an economy (ceteris paribus). Central
bank of a country reduces or increases rate of interest for bank borrowing and lending in an
economy. This is done after looking at all macro economic data and other aspects of an
economy which can make impact on recessionary or inflationary condition of an economy.
Inflationary situation can lead to increase in bank rate and deflationary situation can lead to
cut/reduction in bank rate.
Unemployment types
 Cyclical Unemployment
 Classical Unemployment
 Frictional Unemployment
 Regional Unemployment
 Seasonal Unemployment
 Structural Unemployment
 Voluntary Unemployment
 Disguised Unemployment
Demand Pull Inflation and Cost Push Inflation:
Demand pull inflation:
It occurred due to rise in demand of products and shortage of supply lead to an
increase in inflation rate. (ceteris paribus)
Cost push inflation:
It is a phenomenon where due to increase in cost of products and fall in supply
inflation rises. (ceteris paribus)
Application of AD-AS to economic situations
The aggregate supply (AS) is provided by the firm in an economy through its total production
of goods and services for selling into the market. The aggregate demand (AD) is the total
amounts of goods and services purchased by consumer in market at all possible prices.
(ceteris paribus)
Gradual reduction in aggregate demand can lead to recessionary situation in an economy,
while, gradual decrease or decrease in aggregate supply can lead to inflationary situation.
So to be in equilibrium condition AD should remain equal to AS. It is called position of
equilibrium in an economy and most ideal for an economy. (ceteris paribus)
Change in quantity demanded Vs change in demand