what is aggregate demand
the total demand for a countries goods and services at a given price level in a given time
equation for AD
C + I + G + ( X - M)
what does the wealth effect say
when is there a shift in AD
when C,I,G,X, or M changes, nothing to do with price level
what is consumption
the total spending by households on goods and services in the economy
60 percent of ad
what is the MPC
the marginal propensity to consume is the willingness of a household to spend any extra income that they earn
what factors can affect consumption
๐ท 1. Level of Disposable Income
If real disposable income increases (e.g. due to income tax cuts or wage growth) โ
Households have more money available after tax and inflation โ
This increases their marginal propensity to consume (MPC) โ
Boosting consumption and shifting aggregate demand (AD) to the right.
๐ 2. Interest Rates
When interest rates fall, the cost of borrowing decreases and the return on savings declines โ
This encourages households to borrow more and save less โ
Consumption increases, especially on big-ticket items like cars or appliances โ
Causing a rise in AD and potentially stimulating economic growth.
๐ณ 3. Availability of Credit
Even if interest rates are low, if banks restrict lending or if consumers fail credit checks โ
Households cannot access credit to finance consumption โ
This reduces the effectiveness of monetary policy in stimulating spending โ
So consumption remains subdued despite lower rates.
๐ 4. Consumer Confidence
If consumers are optimistic about future income and job security โ
They are more willing to spend rather than save โ
This raises the MPC and leads to greater consumption across the economy โ
Supporting higher AD and short-run economic growth.
๐ก 5. Asset Prices (e.g. Housing and Stocks)
Rising house or stock prices make households feel wealthier (wealth effect) โ
This boosts consumer confidence and encourages more discretionary spending โ
Especially as homeowners may remortgage to unlock equity โ
Causing a rightward shift in AD through increased consumption.
๐ 6. Household Indebtedness
If households hold high levels of debt (e.g. mortgages, credit cards) โ
They may prioritise debt repayment over new spending, especially if interest rates rise โ
This lowers the MPC and depresses consumption โ
While households with low debt levels are more likely to increase spending when income rises.
what can impact consumer confidence
Examples of asset prices
what are the types of government spending which can take place in the economy
debt interest payments - when govt take out money out of the international bank, interest is added on that needs to be paid
how much money goes to debt interest payment
around 50 billion pounds
what is a budget deficit
when govt spending is greater than tax revenue in a fiscal year
what is a budget surplus
where govt spending is less than tax revenue in a fiscal year
what is national debt
the total stock of debt over time, the accumulation of budget deficits
what would cause AD to shift to the right
an increase in CIGXM
what will an outward shift of AD do
will raise national output at all price levels
what would an inward shift of AD do
reduce national output at all price levels
what does X and M represent in the AD equation
what factors can influence the level of net exports (X - M)
what does SPICED and WIDEC stand for
what is investment
when firms spend money on capital goods to increase their productive capacity
what factors can affect investment
๐ 1. Rate of Economic Growth
Higher economic growth โ increases business profits and consumer demand โ firms are more likely to invest to meet growing demand โ investment increases as businesses expect future growth
๐ญ 2. Business Expectations and Confidence
Positive business expectations โ firms believe future demand will increase โ businesses invest in new projects, equipment, and infrastructure โ boosts investment levels and economic growth
๐ง 3. Keynes and โAnimal Spiritsโ
Businessesโ willingness to invest โ driven by confidence and optimism (Keynes’ โanimal spiritsโ) โ if entrepreneurs feel positive about the economy โ they are more likely to invest, even without clear market signals
๐ 4. Demand for Exports
Increase in foreign demand for a country’s goods โ firms expect higher sales โ encourages investment to expand capacity โ firms invest to take advantage of the growing market
๐ธ 5. Interest Rates
Lower interest rates โ cheaper cost of borrowing for firms โ businesses are more willing to take out loans for investment โ increases in investment as firms can finance expansion more easily
๐ณ 6. Access to Credit
Easier access to credit โ businesses can borrow more easily โ facilitates investment in capital, technology, or infrastructure โ investment increases as firms can finance growth opportunities
๐ 7. Influence of Government and Regulations
Government policies (e.g., tax incentives, subsidies, deregulation) โ reduce costs or risks of investment โ firms are more willing to invest in projects โ increases investment levels in the economy
what are interest rates
what is the hurdle
the required rate of return firms need for investment projects to go ahead