Chapter 2 Time Value of Money 1 Time
- Slides: 52
Chapter 2 Time Value of Money 1
Time Value Topics n n Future value Present value Rates of return Amortization 2
Time lines show timing of cash flows. 0 1 2 3 CF 1 CF 2 CF 3 I% CF 0 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. 3
Time line for a $100 lump sum due at the end of Year 2. 0 I% 1 2 Year 100 4
Time line for an ordinary annuity of $100 for 3 years 0 I% 1 2 3 100 100 5
Time line for uneven CFs 0 1 2 3 100 75 50 I% -50 6
FV of an initial $100 after 3 years (i = 10%) 0 1 2 3 10% 100 FV = ? Finding FVs (moving to the right on a time line) is called compounding. 7
After 3 years FV 3 = FV 2(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. 8
One Way to Find FVs n Use a financial calculator. 9
Here’s the setup to find FV INPUTS 3 N 10 -100 I/YR PV 0 PMT OUTPUT FV 133. 10 Clearing automatically sets everything to 0, but for safety enter PMT = 0. Set: P/YR = 1, END. 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. 0 PV = ? 10% 1 2 3 100 11
Financial Calculator Solution INPUTS OUTPUT 3 N 10 I/YR PV -75. 13 0 PMT 100 FV Either PV or FV must be negative. Here PV = -75. 13. Put in $75. 13 today, take out $100 after 3 years. 12
Finding the Time to Double 0 20% 1 2 ? 2 -1 FV = PV(1 + I)N Continued on next slide 13
Financial Calculator Solution INPUTS N OUTPUT 3. 8 20 I/YR -1 PV 0 PMT 2 FV 14
Finding the Interest Rate 0 -1 ? % 1 2 3 2 15
Financial Calculator INPUTS OUTPUT 3 N I/YR 25. 99 -1 PV 0 PMT 2 FV 16
Ordinary Annuity vs. Annuity Due Ordinary Annuity 0 I% 1 2 3 PMT PMT 1 2 3 PMT Annuity Due 0 I% PMT 17
What’s the FV of a 3 -year ordinary annuity of $100 at 10%? 0 10% 1 2 100 3 100 110 121 FV = 331 18
Financial Calculator Solution INPUTS OUTPUT 3 10 0 -100 N I/YR PV PMT FV 331. 00 Have payments but no lump sum PV, so enter 0 for present value. 19
What’s the PV of this ordinary annuity? 0 1 2 3 100 100 10% 90. 91 82. 64 75. 13 248. 69 = PV 20
Financial Calculator Solution INPUTS OUTPUT 3 10 N I/YR PV 100 0 PMT FV -248. 69 Have payments but no lump sum FV, so enter 0 for future value. 21
Find the FV and PV if the annuity were an annuity due. 0 1 2 100 3 10% 100 22
PV of Annuity Due: Switch from “End” to “Begin INPUTS OUTPUT 3 10 N I/YR PV 100 0 PMT FV -273. 55 23
FV of Annuity Due: Switch from “End” to “Begin INPUTS OUTPUT 3 10 0 100 N I/YR PV PMT FV -364. 1 24
What is the PV of this uneven cash flow stream? 0 1 2 3 4 100 300 -50 10% 90. 91 247. 93 225. 39 -34. 15 530. 08 = PV 25
n Input in “CFLO” register: n n n CF 0 CF 1 CF 2 CF 3 CF 4 = = = 0 100 300 -50 Enter I = 10%, then press NPV button to get NPV = 530. 09. (Here NPV = PV. ) 26
Nominal rate (INOM) n n 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: n n 8%; Quarterly 8%, Daily interest (365 days) 27
Periodic rate (IPER ) n 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. n Used in calculations, shown on time lines. n Examples: n 8% quarterly: IPER = 8%/4 = 2%. n 8% daily (365): IPER = 8%/365 = 0. 021918%. 28
The Impact of Compounding n n Will the FV of a lump sum be larger or smaller if we compound more often, holding the stated I% constant? Why? 29
The Impact of Compounding (Answer) n n LARGER! If compounding is more frequent than once a year--for example, semiannually, quarterly, or daily--interest is earned on interest more often. 30
FV Formula with Different Compounding Periods INOM FVN = PV 1 + M MN . 31
$100 at a 12% nominal rate with semiannual compounding for 5 years INOM FVN = PV 1 + M FV 5 S MN 0. 12 = $100 1 + 2 = $100(1. 06)10 2 x 5 = $179. 08 32
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))(5 x 365) = $182. 19. 33
Effective Annual Rate (EAR = EFF%) n The EAR is the annual rate which causes PV to grow to the same FV as under multi-period compounding. 34
Effective Annual Rate Example n n 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. 35
Comparing Rates n n 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. 36
EFF% for a nominal rate of 12%, compounded semiannually ( ) = (1 + 0. 12) - 1. 0 2 M INOM EFF% = 1 + -1 M 2 = (1. 06)2 - 1. 0 = 0. 1236 = 12. 36%. 37
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%. 38
Can the effective rate ever be equal to the nominal rate? n n 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. 39
When is each rate used? INOM: Written into contracts, quoted by banks and brokers. Not used in calculations or shown on time lines. 40
When is each rate used? (Continued) IPER: Used in calculations, shown on time lines. If INOM has annual compounding, then IPER = INOM/1 = INOM. 41
When is each rate used? (Continued) n n 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. 42
Fractional Time Periods n n 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. ) 43
Convert interest to daily rate IPER = 11. 33463%/365 = 0. 031054% per day. 0 1 2 273 0. 031054% -100 FV=? 44
Calculator Solution IPER = i. NOM/M = 11. 33463/365 = 0. 031054% per day. INPUTS 273 N OUTPUT I/YR -100 PV 0 PMT FV 108. 85 45
Non-matching rates and periods n What’s the value at the end of Year 3 of the following CF stream if the quoted interest rate is 10%, compounded semiannually? 46
Time line for non-matching rates and periods 0 1 2 3 4 5% 100 5 6 6 -mos. periods 100 47
Non-matching rates and periods n n Payments occur annually, but compounding occurs each 6 months. So we can’t use normal annuity valuation techniques. 48
1 st Method: Compound Each CF 0 5% 1 2 100 3 4 100 5 6 100. 00 110. 25 121. 55 331. 80 FVA 3 = $100(1. 05)4 + $100(1. 05)2 + $100 = $331. 80. 49
2 nd Method: Treat as an annuity, use financial calculator Find the EAR for the quoted rate: EAR = ( 0. 10 1+ 2 ) - 1 = 10. 25%. 2 50
Use EAR = 10. 25% as the annual rate in calculator. INPUTS OUTPUT 3 10. 25 0 -100 N I/YR PV PMT FV 331. 80 51
What’s the PV of this stream? 0 5% 90. 70 82. 27 74. 62 247. 59 1 2 3 100 100 52
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