Macroeconomics

Aggregate Demand

Total planned expenditure on goods and services in an economy

Components of AD

• C

• I

• G

• X - M

GDP

Total monetary value of all finished goods and services within a country’s borders

Unemployment

A proportion of the population who are out of work, but is willing, able and searching for work.

Injections

Additions to the circular flow of income that increases total spending

Economic Growth

An increase in the monetary value of goods and services produced as measured by the annual change % in real GDP.

Macroeconomic Objectives

• Economic Growth (a positive GDP)

• Low unemployment

• Low and stable inflation

• Have a balanced current and financial account

Leakage

A factor that removes money from the circular flow of income

Different leakages

• T

• S

• M

Circular Flow of Income

How money is passed through the economy

Households

Factors of Productions → Firms

Consumer Expenditure → Firms

Firms

Goods and Services → Households

Factor Incomes → Households

Aggregate Demand shift to the right

Wealth effect

Purchasing power of income increases therefore consumption increases as price level has fallen and therefore making goods and services more affordable due to increases in Real Income.

Trade effect

The decreasing of the price level makes exports more competitive and imports less competitive

Interest effect

Price level decreasing equates to a low inflation hence interest rates are kept low by central banks to meet inflation targets due to lower inflationary pressure which stimulate higher consumption and higher investment.

Interest Rates & Investment

Lower interest rates allow firms to invest more as cost of borrowing is lower.

What is investment

A firms spending on capital

Interest Rates & Exchange Rate

Low interest rates reduces value of exchange rate which increases net export performance.

Lower Price Level

Reduces inflationary pressure

Increasing MPC causes

• Lower Interest Rates as it encourages borrowing as consumers are more likely to take out loans to buy big purchases

• Increased animal spirits which are increased consumer confidence as consumers are more optimistic about the economy.

Multiplier effect

An initial increase in a component of aggregate demand leads to a bigger increase in real GDP

Accelerator effect

An increase in real GDP leads to an increase in investment

MPC

The willingness to spend any additional income a household earns

Determinants of consumption

• Real disposable income

• Interest rates

• Consumer confidence (animal spirits)

• Asset prices (house prices)

Disposable income causes

Income taxes

Current Spending

• Maintenance of public sector services

• Payment of public sector wages

Capital Spending

• Infrastructure spending

Welfare Spending

• Benefits and pensions

Budget Deficit

G > T in a fiscal year

Budget surplus

T > G in a fiscal year

National Debt

Total stock of debts over time

SRAS Shift Causes

• Costs of production

Costs of Production

• Wages

• Raw resources

• Business Taxes (VAT)

• Oil prices

LRAS Shift Causes

Due to the quality of factors of production

• Quality & Quantity of FOP

• R & D, Capital Investment

• Infrastructure