what is disinflation
a decrease in the rate of inflation
what are price indices
measure changes in the general level of prices
these are weighted averages of price changes based on average levels of spending on a wide range of consumer goods and services
interpreting price indices
like other index numbers price indices have a base year of 100
the % change is added to 100
they’re calculated by recording the prices of a basket of goods and services that are thought to be typical of what an average family would buy
price levels for diff products are weighted according to how important the product is in a typical households total spending
what’s meant by the rate of inflation
it’s the annual percentage change in the average level of prices from year to year
name 2 measures of inflation
CPI consumer price index
RPI retail price index
what is CPI
it’s the headline rate and forms the basis for the government’s inflation target
it excludes mortgage interest payments and housing costs
what is RPI
includes housing costs such as council tax and mortgage interest payments
it’s used to decide state pension and benefit levels
what is a real value
it has the effect of inflation removed
real value can be applied to any money value not just income e.g real GDP and real interest rates
and is a nominal value
anything nominal has its value expressed in current prices e.g in numerical terms
what is a current price
value each item in terms of the prices that year
what is a constant price
real values are expressed in constant prices
the data for each year is shown as the value they would have had in the prices of a particular base year
effects of inflation is removed
demand pull inflation
arises when the economy is overheating in a boom
AD exceeds AS
prices prise in response to market pressure
if AD curve shifts further to the right any rise in output will involve higher prices
what is cost push inflation
occurs when costs of production are rising
import prices may rise
wage negotiations may end in labour costs rising
rent and other costs may rise
cost inflation causes AS curves to shift upwards
what is an inflationary spiral
when inflations been accelerating for a while there will be cost push and demand pull pressures
impact of inflation on firms- uncertainty
inflation makes it harder for businesses to make accurate cash flow, cost and rev forecasts bcs prices and costs are constantly changing so it’s very difficult to forecast future profits
plans to invest and expand production become riskier so inflation is likely to lead to lower investment
impact of inflation on firms- loss of competitiveness
inflation may make exports less competitive if competing economies have lower inflation rates
if the exchange rate is allowed to depreciate it may be possible to adjust automatically but there will still be some uncertainty
impact of inflation on individuals- loss of real income
the nominal rate of interest may be less than the rate of inflation
people on fixed incomes lose out if these are not raised in line with inflation
this can affect pensioners and people on benefits
impact of inflation on individuals- savers and borrowers
money loses its value and people lose confidence in money as the real value of their savings is reduced
this makes savers worse off, they will be less wealthy after a period of higher than average inflation
people who borrow gain gain bcs other time the value of money falls, the nominal value they repay is worth less in real terms than when they borrowed