Presentation on theme: "NOMINAL AND REAL VALUES"— Presentation transcript:
1 NOMINAL AND REAL VALUES Nominal and Real Values in MacroeconomicsMacroeconomics makes a big issue of the distinction between nominal values and real values:Nominal GDP and real GDPNominal wage rate and real wage rateNominal interest rate and real interest rate
2 NOMINAL AND REAL VALUES Just because you get an increase in the nominal value, doesn’t mean you are better off than you were before.We will need to deflate nominal values by the price index to calculate real values for anything- Wages, Income, GDP, etc…
3 Formula for Real Values NominalReal=X 100__________________Price Index* The price index can be the CPI, PPI,or the GDP Deflator.
4 NOMINAL AND REAL VALUES Nominal and Real Wage RatesNominal wage rateThe average hourly wage rate measured in current dollars.Real wage rateThe average hourly wage rate measured in the dollars of a given reference base year. Reflects inflation!Use the US President example to emphasize the difficulty of holding relevant factors constant to calculate a real wage.
5 NOMINAL AND REAL VALUES What is the nominal hourly wage of $14.28 in 2002 worth indollars.To calculate the real wage rate, we divide the nominal wage rate by the CPI and multiply by 100.That is,Nominal wage rate in 2002CPI in 2002x 100Real wage rate in 2002 =Real wage rate in June 2002 == $8.16$14.68179.9x 100So the $14.28 in the nominal hourly wage in 2002 is worth $8.16 in 19821984 dollars.
6 22.3 NOMINAL AND REAL VALUES Figure 22.4 shows nominal and real wage rates: 1975–2005.The nominal wage rate has increased every year since 1975.The real wage rate increased briefly during the late 1970s, decreased through the mid-1990s, and then increased slightly.
8 Nominal and Real Income Example:2002- Nominal income is $40,0002003- Nominal Income is $41,0002002- CPI 181.62003- CPI 185Q. 1- What is my real income for each year?Q. 2- Did my purchasing power increase in2003? Am I better off in 2003?
9 Nominal and Real Income 2002 Real Income= $40,000/181.6 x 100= $22,0262003 Real Income= $41,000/185 x 100= $22,162Real income has increased by $136. You are better off in 2003 than in 2002.
10 Nominal and Real Income What if your income only increased to$40,500 in 2003.Calculate: 1) Real income for each year.2) Did your purchasing powerincrease in 2003?
11 Nominal and Real Income 2002 Real Income= $40,000/181.6 x 100= $22,0262003 Real Income= $40,500/185 x 100= $21,891Real income has decreased by $135. So even though your nominal income has increased by $500, your real income has decreased by $135.
12 Anticipated Versus Unanticipated Inflation The effects of inflation on individuals depends upon which type of inflation exists.
13 Anticipated Inflation The rate of inflation that the majority of individuals believe will occur. If the rate of inflation is 10% and that is what the majority expected, then inflation was fully anticipated.
14 Unanticipated Inflation Inflation that comes as a surprise to individuals in the economy. If people expected an inflation rate of 5% and the actual rate of inflation was 10%, then 5% of the actual inflation rate was unanticipated inflation.This is the inflation that wreaks havoc on the economy!Unanticipated inflation hurts many people. When inflation is anticipated some of these people (lenders) are able to protect themselves.All of this is important when dealing with interest rates!
15 22.3 NOMINAL AND REAL VALUES Nominal and Real Interest RatesNominal interest rateThe percentage return on a loan expressed in todays dollars.Real interest rateThe percentage return on a loan, calculated by purchasing power—the nominal interest rate adjusted for the effects of inflation.Real interest rate = Nominal interest rate – Inflation rate
16 Inflation/Interest Rates Real Interest RateHome MortgageNominal Interest Rate 15%Increase in the price of housing of 25% (inflation)Real Rate = 15% - 25% = -10%
17 Inflation/Interest Rates Real Interest RateHome MortgageNominal Interest Rate 6.5%Increase in the price of housing of 2%Real Rate = 6.5% - 2% = 4.5%QuestionWhich scenario is the best for the lender? the borrower?
18 Does Inflation Necessarily Hurt Everyone? All of this is extremely important with borrowers and creditors.Banks must anticipate the inflation rate to cover all loans. Try to increase interest rates with the rate of inflation. This is not an exact science. Creditors/lenders must make sure that the nominal rate of interest is greater than anticipated inflation. It is the unanticipated inflation they can not predict.Creditor gains if real interest rate is positive.Debtor gains if real rate of interest is negativeUnanticipated inflation is the key!! Higher unanticipated inflation helps borrowers/hurts creditors.
19 Does Inflation Necessarily Hurt Everyone? Nom. Int. Rate - Infl. Rate = Real Int. Rate 10% 5% 5% creditor wins 10% 10% 0% draw 10% 15% -5% debtor winsIn the past inflation and nominal interest have risen andfallen together.
20 Effects of InflationCreditors (Lenders) Lose: Net creditors are individuals or businesses that have more savings than debt. A net creditor receives interest and, therefore, receives a reduced real interest return when there is unanticipated inflation.Debtors (borrowers) Win: Net debtors are individuals or businesses that have more debt than savings. A net debtor pays interest, and therefore, pays a lower real interest rate when there is unanticipated inflation. A fixed rate of interest helps a debtor in the long term. Paying back a loan with less purchasing power during times of inflation.
21 NOMINAL AND REAL VALUES Figure shows real and nominal interest rates: 1965–2005.During the 1970s, the real interest rate became negative.The nominal interest rate increased during the high-inflation 1980s.
23 Protecting Against Inflation Cost-of-living adjustments (COLAs)Clauses in contracts that allow for increases in specified nominal values to take account of changes in the cost of livingARMS- Banks offer “Adjustable Rate Mortgages” that adjust the interest rate to keep up with changes in inflation
24 Types of InflationDemand- Pull Inflation- More dollars chasing less goods. An increase in aggregate demand. Often results for too much money in the economy.Cost-Push Inflation- Inflation due to an increase in production/ input costs. Results in a decrease of aggregate supply.