3.4: UK macroeconomy Flashcards
Ciruclar flow of income
Households -> expenditure on consumption (goods/services) -> firms
Firms -> income (labour,land,capital) -> households
Labour paid in
Land paid for in
Capital paid for in
Wages
Rent
Interest
What happens when the owner earns of profit
Some of which goes to owner as payment for ‘enterprise’
Income
Flow of money owned
Wealth
Value of all assets
Factors influencing distribution of income/wealth
Taxation policy: regressive policies increase gap, progessive policies reduce it
Wage difference in high and low skill labour
Discriination against different groups of workers
Regional difference in earnings
Unsalaried individuals depending on state benefits
Withdrawals from circular flow of income
Savings
Taxes
Imports
Injections into circular flow of income
Exports (X)
Investment (I)
Government spending (G)
What happens if injections exceed withdrawals?
Circular flow of income will expand. National income will rise
What happens if withdrawals exceed injections?
Circular flow of income will shrink. National income will fall
Example of an injection:
Expansionary fiscal policy -> govt spending rise
Example of an withdrawal
Uncertainty -> consumers save, firms invest less
Marginal propensity to consume =
Change in consumption / Change in income
What does MPC represent?
The amount of each extra pound the consumer spends when given an extra pound in income i.e. if MPC is 0.25 each extra pound they spend £0.25
People with less money have higher MPC
Marginal propensity to save =
Change in savings / Change in income
What does MPS represent?
With every extra pound, how much they save of it
Marginal propensity to tax =
Change in tax / Change in income
What does MPT represent?
With every extra pound earnt, how much spent on tax
Can also mean marginal tax rate
Marginal propensity to import =
Change in imports / Change in incomes
What does MPM represent?
Proportion of extra pound earnt spent on imports
The multiplier
An initial change in an injection or leakage that leads to a much greater final change in real national income. One person’s consumption is another’s income
How does the multipier work?
Govt buolds New hospital for £50bn -> Govt spending rises by £50bn, AD and real GDP rise by £50bn -> Govt spends £35bn of the money ona construction firm -> Firm spends £10bn on investment (a component of AD), Invetsment (I) rises by £10bn, Firm spends £5bn on workers who receive higher incomes and spend, Consumer spending rises by £5bn (another component of AD) -> AD risen by £65bn (50bn + 10bn + 5bn) from £50bn -> if spending rises by £50bn, will be a rightward shift in AD, each stage of the multiplier effect will be viewed to add another rightward shift od AD each one smaller than the last
What happens if MPC is high?
The multiplier is high - more money is passed on at each stage
What happens if taxes rise?
More money is leaked -> MPC must fall -> multiplier falls
Multiplier formula
Multiplier = 1 / (1-MPC)
Marginal propensity to withdraw =
MPS + MPT + MPM