Macro Economics Macroeconomics is a branch of economics field that studies how the aggregate economy behaves . In macroeconomics, a variety of economy-wide phenomena is thoroughly examined such as, inflation, price levels, rate of growth, national income, gross domestic product and changes in unemployment Useful to estimate National Income and Per Capita Income
National Income (N.I.) N.I. Is the aggregate money value of goods and services produced in a country during a particular year It is the money value of all economic activities of a nation in a given year Economy is in equilibrium when income = output = expenditure
National Income (N.I.) Economic Activities in National Income Production Exchange Consumption Distribution Above Decisions are based on Economic Agents Households Firm
National Income (N.I.) Household Owners of Factors of Production Receive Income by supplying Services of Factors to Firms Firms Businesses who decide what, where, how and for whom to produce to goods and services Receive Income by selling their output to household
Aspects of Circular Flow of N.I. Real Flow Money Flow Movement of Factor services from household to firms Movement of Goods & Services from firms to Households Movement of money as payment for factor services from firms to households Movement of money as payment for goods & services from household to firms
Circular Flow of N.I. Closed Economy Two Sector Economy (Without Savings) Two Sector Economy (With Savings) Three Sector Economy Four Sector Economy / Open Economy
Closed Economy – Without Savings Assumptions 2 Sectors only – Household and Firms Household owns Factors of Production Household receives payment for service of factors of production Production Activities take place in Firms Only Both Household and Firms have ZERO Savings No Govt Operations or International Trade
Closed Economy – Without Savings
Closed Economy – With Savings Assumptions 2 Sectors only – Household and Firms Household owns Factors of Production Household receives payment for service of factors of production Production Activities take place in Firms Only No Govt Operations or International Trade
Closed Economy – With Savings
Closed Economy – With Savings Savings are leakage from the circular flow of economy Households save a part of their income in form of Bank Deposits or financial investments etc. Firms borrow money from banks or financial institutions thus converting household savings into real investments Thus savings is injected back in economy in the form of investment When savings are made circular flow of income is disturbed due to leakage but is restored as real investments are made on account of injection
Three Sector Model (Firms, Household & Govt)
Four Sector Model (Firms, Household, Govt & External Sector)
Four Sector Model (Firms, Household, Govt & External Sector) Savings, Taxes, Imports are leakages and Investment, Govt expenditure and exports are injections Circular Flow of Economic Activities among 4 sector shows that there will be equilibrium in all sectors when Savings = Investments Govt Expenditure = Taxes Exports = Imports
Four Sector Model (Firms, Household, Govt & External Sector) To measure Circular Flow in various economies there are various stages as follows Production Stage – Measured by Value of Output Income Stage – Measured by Earned Factor Income Spending Stage – Measured by Extent of total expenditure
Importance of Circular Flow of Income Gives Clear Picture of Economy Smooth Functioning of Economy Guidance in Restoration of Equilibrium Helps to Find Leakages Highlights importance of Policies (Fiscal & Monetary Policies for equality in income & expenditure) Comprehensive Study of Economy’s Performance
Questions Analyze Circular Flow of Income in Closed Economy Elucidate Circular Flow of Income in Open Economy Explain Circular Flow of Income in 3 Sector Economy Importance of Circular Flow of Income in Economy