1 chapter 2 time value of money. 2 time value topics future value present value rates of return...
TRANSCRIPT
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Chapter 2
Time Value of Money
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Time Value Topics
Future value Present value Rates of return Amortization
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Time lines show timing of cash flows.
CF0 CF1 CF3CF2
0 1 2 3I%
Tick marks at ends of periods, so Time 0 is today; Time 1 is the end of Period 1; or the beginning of Period 2.
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Time line for a $100 lump sum due at the end of Year 2.
100
0 1 2 YearI%
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Time line for an ordinary annuity of $100 for 3 years
100 100100
0 1 2 3I%
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Time line for uneven CFs
100 50 75
0 1 2 3I%
-50
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FV of an initial $100 after3 years (i = 10%)
FV = ?
0 1 2 310%
Finding FVs (moving to the righton a time line) is called compounding.
100
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After 3 years
FV3 = FV2(1+I)=PV(1 + I)2(1+I)= PV(1+I)3
= $100(1.10)3
= $133.10
In general,FVN = PV(1 + I)N.
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One Way to Find FVs
Use a financial calculator.
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3 10 -100 0N I/YR PV PMT FV
133.10
Clearing automatically sets everything to 0, but for safety enter PMT = 0.
Set: P/YR = 1, END.
INPUTS
OUTPUT
Here’s the setup to find FV
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10%
What’s the PV of $100 due in 3 years if i = 10%?
Finding PVs is discounting, and it’s the reverse of compounding.
100
0 1 2 3
PV = ?
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3 10 0 100N I/YR PV PMT FV
-75.13
Either PV or FV must be negative. HerePV = -75.13. Put in $75.13 today, take out $100 after 3 years.
INPUTS
OUTPUT
Financial Calculator Solution
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20%
2
0 1 2 ?
-1 FV = PV(1 + I)N
Continued on next slide
Finding the Time to Double
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20 -1 0 2N I/YR PV PMT FV
3.8
INPUTS
OUTPUT
Financial Calculator Solution
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?%
2
0 1 2 3
-1
Finding the Interest Rate
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3 -1 0 2N I/YR PV PMT FV
25.99
INPUTS
OUTPUT
Financial Calculator
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Ordinary Annuity
PMT PMTPMT
0 1 2 3I%
PMT PMT
0 1 2 3I%
PMT
Annuity Due
Ordinary Annuity vs. Annuity Due
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What’s the FV of a 3-year ordinary annuity of $100 at 10%?
100 100100
0 1 2 310%
110 121FV = 331
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3 10 0 -100
331.00N I/YR PV PMT FV
Have payments but no lump sum PV, so enter 0 for present value.
INPUTS
OUTPUT
Financial Calculator Solution
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What’s the PV of this ordinary annuity?
100 100100
0 1 2 310%
90.91
82.64
75.13248.69 = PV
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Have payments but no lump sum FV, so enter 0 for future value.
3 10 100 0N I/YR PV PMT FV
-248.69
INPUTS
OUTPUT
Financial Calculator Solution
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Find the FV and PV if theannuity were an annuity due.
100 100
0 1 2 3
10%
100
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3 10 100 0
-273.55 N I/YR PV PMT FV
INPUTS
OUTPUT
PV of Annuity Due: Switch from “End” to “Begin
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3 10 0 100
-364.1 N I/YR PV PMT FV
INPUTS
OUTPUT
FV of Annuity Due: Switch from “End” to “Begin
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What is the PV of this uneven cash flow stream?
0
100
1
300
2
300
310%
-50
4
90.91247.93225.39-34.15
530.08 = PV
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Input in “CFLO” register: CF0 = 0 CF1 = 100 CF2 = 300 CF3 = 300 CF4 = -50
Enter I = 10%, then press NPV button to get NPV = 530.09. (Here NPV = PV.)
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Nominal rate (INOM)
Stated in contracts, and quoted by banks and brokers.
Not used in calculations or shown on time lines
Periods per year (M) must be given. Examples:
8%; Quarterly 8%, Daily interest (365 days)
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Periodic rate (IPER )
IPER = INOM/M, where M is number of compounding
periods per year. M = 4 for quarterly, 12 for
monthly, and 360 or 365 for daily compounding.
Used in calculations, shown on time lines.
Examples:
8% quarterly: IPER = 8%/4 = 2%.
8% daily (365): IPER = 8%/365 = 0.021918%.
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The Impact of Compounding
Will the FV of a lump sum be larger or smaller if we compound more often, holding the stated I% constant?
Why?
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The Impact of Compounding (Answer)
LARGER!
If compounding is more frequent than once a year--for example, semiannually, quarterly, or daily--interest is earned on interest more often.
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FV Formula with Different Compounding Periods
FV = PV 1 .+ I
MN
NOMM N
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$100 at a 12% nominal rate with semiannual compounding for 5 years
= $100(1.06)10 = $179.08
FV = PV 1 + I
MN
NOMM N
FV = $100 1 + 0.12
25S
2x5
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FV of $100 at a 12% nominal rate for 5 years with different compounding
FV(Annual)= $100(1.12)5 = $176.23.FV(Semiannual)= $100(1.06)10=$179.08.FV(Quarterly)= $100(1.03)20 = $180.61.FV(Monthly)= $100(1.01)60 = $181.67.FV(Daily) = $100(1+(0.12/365))(5x365) = $182.19.
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Effective Annual Rate (EAR = EFF%)
The EAR is the annual rate which causes PV to grow to the same FV as under multi-period compounding.
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Effective Annual Rate Example
Example: Invest $1 for one year at 12%, semiannual:
FV = PV(1 + INOM/M)M
FV = $1 (1.06)2 = 1.1236. EFF% = 12.36%, because $1 invested for
one year at 12% semiannual compounding would grow to the same value as $1 invested for one year at 12.36% annual compounding.
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Comparing Rates
An investment with monthly payments is different from one with quarterly payments. Must put on EFF% basis to compare rates of return. Use EFF% only for comparisons.
Banks say “interest paid daily.” Same as compounded daily.
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= - 1.0(1 + )0.122
2
= (1.06)2 - 1.0 = 0.1236 = 12.36%.
EFF% for a nominal rate of 12%, compounded semiannually
EFF% = - 1(1 + )INOM
M
M
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EAR (or EFF%) for a Nominal Rate of of 12%
EARAnnual = 12%.
EARQ = (1 + 0.12/4)4 - 1 = 12.55%.
EARM = (1 + 0.12/12)12 - 1 = 12.68%.
EARD(365) = (1 + 0.12/365)365 - 1 = 12.75%.
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Can the effective rate ever be equal to the nominal rate?
Yes, but only if annual compounding is used, i.e., if M = 1.
If M > 1, EFF% will always be greater than the nominal rate.
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When is each rate used?
INOM: Written into contracts, quoted by banks and brokers. Not used in calculations or shownon time lines.
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IPER: Used in calculations, shown on time lines.
If INOM has annual compounding,then IPER = INOM/1 = INOM.
When is each rate used? (Continued)
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When is each rate used? (Continued)
EAR (or EFF%): Used to compare returns on investments with different payments per year.
Used for calculations if and only if dealing with annuities where payments don’t match interest compounding periods.
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Fractional Time Periods
On January 1 you deposit $100 in an account that pays a nominal interest rate of 11.33463%, with daily compounding (365 days).
How much will you have on October 1, or after 9 months (273 days)? (Days given.)
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IPER = 11.33463%/365= 0.031054% per day.
FV=?
0 1 2 273
0.031054%
-100
Convert interest to daily rate
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273 -100 0
108.85
INPUTS
OUTPUT
N I/YR PV FVPMT
IPER = iNOM/M= 11.33463/365= 0.031054% per day.
Calculator Solution
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Non-matching rates and periods
What’s the value at the end of Year 3 of the following CF stream if the quoted interest rate is 10%, compounded semiannually?
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Time line for non-matching rates and periods
0 1
100
2 35%
4 5 6 6-mos. periods
100 100
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Non-matching rates and periods
Payments occur annually, but compounding occurs each 6 months.
So we can’t use normal annuity valuation techniques.
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1st Method: Compound Each CF
0 1
100
2 35%
4 5 6
100 100.00110.25121.55331.80
FVA3 = $100(1.05)4 + $100(1.05)2 + $100= $331.80.
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2nd Method: Treat as an annuity, use financial calculator
Find the EAR for the quoted rate:
EAR = (1 + ) - 1 = 10.25%. 0.10
22
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3 10.25 0 -100
INPUTS
OUTPUT N I/YR PV FVPMT
331.80
Use EAR = 10.25% as the annual rate in calculator.
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What’s the PV of this stream?
0
100
15%
2 3
100 100
90.7082.2774.62
247.59