1. Chapter 5 - The Time Value of Money
 2005, Pearson Prentice Hall

2. Compounding and Discounting Single Sums
The Time Value of Money
Compounding and Discounting Single Sums

3. We know that receiving $1 today is worth more than $1 in the future
We know that receiving $1 today is worth more than $1 in the future. This is due to opportunity costs.
The opportunity cost of receiving $1 in the future is the interest we could have earned if we had received the $1 sooner.
Today
Future

4. If we can measure this opportunity cost, we can:

5. If we can measure this opportunity cost, we can:
Translate $1 today into its equivalent in the future (compounding).

6. If we can measure this opportunity cost, we can:
Translate $1 today into its equivalent in the future (compounding).
Today ?
Future

7. If we can measure this opportunity cost, we can:
Translate $1 today into its equivalent in the future (compounding).
Translate $1 in the future into its equivalent today (discounting).
Today ?
Future

8. If we can measure this opportunity cost, we can:
Translate $1 today into its equivalent in the future (compounding).
Translate $1 in the future into its equivalent today (discounting).
Today ?
Future ?
Today
Future

9. Compound Interest and Future Value

10. Future Value - single sums If you deposit $100 in an account earning 6%, how much would you have in the account after 1 year?

11. Future Value - single sums If you deposit $100 in an account earning 6%, how much would you have in the account after 1 year?
PV = FV =

12. Future Value - single sums If you deposit $100 in an account earning 6%, how much would you have in the account after 1 year?
PV = FV =
Calculator Solution:
P/Y = 1 I = 6
N = PV =
FV = $106

13. Future Value - single sums If you deposit $100 in an account earning 6%, how much would you have in the account after 1 year?
PV = FV = 106
Calculator Solution:
P/Y = 1 I = 6
N = PV =
FV = $106

14. Future Value - single sums If you deposit $100 in an account earning 6%, how much would you have in the account after 1 year?
PV = FV = 106
Mathematical Solution:
FV = PV (FVIF i, n )
FV = 100 (FVIF .06, 1 ) (use FVIF table, or)
FV = PV (1 + i)n
FV = 100 (1.06)1 = $106

16. Future Value - single sums If you deposit $100 in an account earning 6%, how much would you have in the account after 5 years?

17. Future Value - single sums If you deposit $100 in an account earning 6%, how much would you have in the account after 5 years?
PV = FV =

18. Future Value - single sums If you deposit $100 in an account earning 6%, how much would you have in the account after 5 years?
PV = FV =
Calculator Solution:
P/Y = 1 I = 6
N = PV =
FV = $133.82

19. Future Value - single sums If you deposit $100 in an account earning 6%, how much would you have in the account after 5 years?
PV = FV =
Calculator Solution:
P/Y = 1 I = 6
N = PV =
FV = $133.82

20. Future Value - single sums If you deposit $100 in an account earning 6%, how much would you have in the account after 5 years?
PV = FV =
Mathematical Solution:
FV = PV (FVIF i, n )
FV = 100 (FVIF .06, 5 ) (use FVIF table, or)
FV = PV (1 + i)n
FV = 100 (1.06)5 = $133.82

21. Future Value - single sums If you deposit $100 in an account earning 6% with quarterly compounding, how much would you have in the account after 5 years?

22. Future Value - single sums If you deposit $100 in an account earning 6% with quarterly compounding, how much would you have in the account after 5 years?
PV = FV = ?

23. Future Value - single sums If you deposit $100 in an account earning 6% with quarterly compounding, how much would you have in the account after 5 years?
PV = FV =
Calculator Solution:
P/Y = 4 I = 6
N = PV =
FV = $134.68

24. Future Value - single sums If you deposit $100 in an account earning 6% with quarterly compounding, how much would you have in the account after 5 years?
PV = FV =
Calculator Solution:
P/Y = 4 I = 6
N = PV =
FV = $134.68

25. Future Value - single sums If you deposit $100 in an account earning 6% with monthly compounding, how much would you have in the account after 5 years?

26. Future Value - single sums If you deposit $100 in an account earning 6% with monthly compounding, how much would you have in the account after 5 years?
PV = FV = ?

27. Future Value - single sums If you deposit $100 in an account earning 6% with monthly compounding, how much would you have in the account after 5 years?
PV = FV =
Calculator Solution:
P/Y = 12 I = 6
N = PV =
FV = $134.89

28. Future Value - single sums If you deposit $100 in an account earning 6% with monthly compounding, how much would you have in the account after 5 years?
PV = FV =
Calculator Solution:
P/Y = 12 I = 6
N = PV =
FV = $134.89

29. Future Value - single sums If you deposit $100 in an account earning 6% with monthly compounding, how much would you have in the account after 5 years?
PV = FV =
Mathematical Solution:
FV = PV (FVIF i, n )
FV = 100 (FVIF .005, 60 ) (can’t use FVIF table)
FV = PV (1 + i/m) m x n
FV = 100 (1.005)60 = $134.89

30. Future Value - continuous compounding What is the FV of $1,000 earning 8% with continuous compounding, after 100 years?

31. Future Value - single sums If you deposit $100 in an account earning 6% with quarterly compounding, how much would you have in the account after 5 years?
PV = FV =
Mathematical Solution:
FV = PV (FVIF i, n )
FV = 100 (FVIF .015, 20 ) (can’t use FVIF table)
FV = PV (1 + i/m) m x n
FV = 100 (1.015)20 = $134.68

32. Future Value - continuous compounding What is the FV of $1,000 earning 8% with continuous compounding, after 100 years?
PV = FV = ?

33. Mathematical Solution: FV = PV (e in)
Future Value - continuous compounding What is the FV of $1,000 earning 8% with continuous compounding, after 100 years?
PV = FV =
Mathematical Solution:
FV = PV (e in)
FV = (e .08x100) = (e 8)
FV = $2,980,957.99

34. Mathematical Solution: FV = PV (e in)
Future Value - continuous compounding What is the FV of $1,000 earning 8% with continuous compounding, after 100 years?
PV = FV = $2.98m
Mathematical Solution:
FV = PV (e in)
FV = (e .08x100) = (e 8)
FV = $2,980,957.99

35. Present Value

36. Present Value - single sums If you receive $100 one year from now, what is the PV of that $100 if your opportunity cost is 6%?

37. Present Value - single sums If you receive $100 one year from now, what is the PV of that $100 if your opportunity cost is 6%?
PV = FV = ?

38. Present Value - single sums If you receive $100 one year from now, what is the PV of that $100 if your opportunity cost is 6%?
PV = FV =
Calculator Solution:
P/Y = 1 I = 6
N = FV = 100
PV =

39. Present Value - single sums If you receive $100 one year from now, what is the PV of that $100 if your opportunity cost is 6%?
PV = FV =
Calculator Solution:
P/Y = 1 I = 6
N = FV = 100
PV =

40. Present Value - single sums If you receive $100 one year from now, what is the PV of that $100 if your opportunity cost is 6%?
PV = FV =
Mathematical Solution:
PV = FV (PVIF i, n )
PV = 100 (PVIF .06, 1 ) (use PVIF table, or)
PV = FV / (1 + i)n
PV = 100 / (1.06)1 = $94.34

42. Present Value - single sums If you receive $100 five years from now, what is the PV of that $100 if your opportunity cost is 6%?

43. Present Value - single sums If you receive $100 five years from now, what is the PV of that $100 if your opportunity cost is 6%?
PV = FV = ?

44. Present Value - single sums If you receive $100 five years from now, what is the PV of that $100 if your opportunity cost is 6%?
PV = FV =
Calculator Solution:
P/Y = 1 I = 6
N = FV = 100
PV =

45. Present Value - single sums If you receive $100 five years from now, what is the PV of that $100 if your opportunity cost is 6%?
PV = FV =
Calculator Solution:
P/Y = 1 I = 6
N = FV = 100
PV =

46. Present Value - single sums If you receive $100 five years from now, what is the PV of that $100 if your opportunity cost is 6%?
PV = FV =
Mathematical Solution:
PV = FV (PVIF i, n )
PV = 100 (PVIF .06, 5 ) (use PVIF table, or)
PV = FV / (1 + i)n
PV = 100 / (1.06)5 = $74.73

47. Present Value - single sums What is the PV of $1,000 to be received 15 years from now if your opportunity cost is 7%?

48. Present Value - single sums What is the PV of $1,000 to be received 15 years from now if your opportunity cost is 7%?
PV = FV =

49. Present Value - single sums What is the PV of $1,000 to be received 15 years from now if your opportunity cost is 7%?
PV = FV =
Calculator Solution:
P/Y = 1 I = 7
N = FV = 1,000
PV =

50. Present Value - single sums What is the PV of $1,000 to be received 15 years from now if your opportunity cost is 7%?
PV = FV =
Calculator Solution:
P/Y = 1 I = 7
N = FV = 1,000
PV =

51. Present Value - single sums What is the PV of $1,000 to be received 15 years from now if your opportunity cost is 7%?
PV = FV =
Mathematical Solution:
PV = FV (PVIF i, n )
PV = 1000 (PVIF .07, 15 ) (use PVIF table, or)
PV = FV / (1 + i)n
PV = 1000 / (1.07)15 = $362.45

52. Present Value - single sums If you sold land for $11,933 that you bought 5 years ago for $5,000, what is your annual rate of return?

53. Present Value - single sums If you sold land for $11,933 that you bought 5 years ago for $5,000, what is your annual rate of return?
PV = FV =

54. Present Value - single sums If you sold land for $11,933 that you bought 5 years ago for $5,000, what is your annual rate of return?
PV = FV = 11,933
Calculator Solution:
P/Y = 1 N = 5
PV = -5, FV = 11,933
I = 19%

55. Present Value - single sums If you sold land for $11,933 that you bought 5 years ago for $5,000, what is your annual rate of return?
Mathematical Solution:
PV = FV (PVIF i, n )
5,000 = 11,933 (PVIF ?, 5 )
PV = FV / (1 + i)n
5,000 = 11,933 / (1+ i)5
= ((1/ (1+i)5)
= (1+i)5
(2.3866)1/5 = (1+i) i = .19

56. Present Value - single sums Suppose you placed $100 in an account that pays 9.6% interest, compounded monthly. How long will it take for your account to grow to $500?
PV = FV =

57. Present Value - single sums Suppose you placed $100 in an account that pays 9.6% interest, compounded monthly. How long will it take for your account to grow to $500? ?
PV = FV =
Calculator Solution:
P/Y = 12 FV = 500
I = PV = -100
N = months

58. Mathematical Solution:
Present Value - single sums Suppose you placed $100 in an account that pays 9.6% interest, compounded monthly. How long will it take for your account to grow to $500?
Mathematical Solution:
PV = FV / (1 + i)n
100 = 500 / ( )N
5 = (1.008)N
ln 5 = ln (1.008)N
ln 5 = N ln (1.008)
= N N = 202 months

59. Hint for single sum problems:
In every single sum present value and future value problem, there are four variables:
FV, PV, i and n.
When doing problems, you will be given three variables and you will solve for the fourth variable.
Keeping this in mind makes solving time value problems much easier!

60. Compounding and Discounting
The Time Value of Money
Compounding and Discounting
Cash Flow Streams 1 2 3 4

61. Annuities
Annuity: a sequence of equal cash flows, occurring at the end of each period.

62. Annuities
Annuity: a sequence of equal cash flows, occurring at the end of each period. 1 2 3 4

63. Examples of Annuities:
If you buy a bond, you will receive equal semi-annual coupon interest payments over the life of the bond.
If you borrow money to buy a house or a car, you will pay a stream of equal payments.

64. Examples of Annuities:
If you buy a bond, you will receive equal semi-annual coupon interest payments over the life of the bond.
If you borrow money to buy a house or a car, you will pay a stream of equal payments.

65. Future Value - annuity If you invest $1,000 each year at 8%, how much would you have after 3 years?

66. Future Value - annuity If you invest $1,000 each year at 8%, how much would you have after 3 years?

67. Future Value - annuity If you invest $1,000 each year at 8%, how much would you have after 3 years?
Calculator Solution:
P/Y = 1 I = 8 N = 3
PMT = -1,000
FV = $3,246.40

68. Future Value - annuity If you invest $1,000 each year at 8%, how much would you have after 3 years?
Calculator Solution:
P/Y = 1 I = 8 N = 3
PMT = -1,000
FV = $3,246.40

69. Future Value - annuity If you invest $1,000 each year at 8%, how much would you have after 3 years?

70. Future Value - annuity If you invest $1,000 each year at 8%, how much would you have after 3 years?
Mathematical Solution:

71. Future Value - annuity If you invest $1,000 each year at 8%, how much would you have after 3 years?
Mathematical Solution:
FV = PMT (FVIFA i, n )

72. Future Value - annuity If you invest $1,000 each year at 8%, how much would you have after 3 years?
Mathematical Solution:
FV = PMT (FVIFA i, n )
FV = 1,000 (FVIFA .08, 3 ) (use FVIFA table, or)

73. Future Value - annuity If you invest $1,000 each year at 8%, how much would you have after 3 years?
Mathematical Solution:
FV = PMT (FVIFA i, n )
FV = 1,000 (FVIFA .08, 3 ) (use FVIFA table, or)
FV = PMT (1 + i)n - 1 i

74. Future Value - annuity If you invest $1,000 each year at 8%, how much would you have after 3 years?
Mathematical Solution:
FV = PMT (FVIFA i, n )
FV = 1,000 (FVIFA .08, 3 ) (use FVIFA table, or)
FV = PMT (1 + i)n - 1 i
FV = 1,000 (1.08) = $
.08

76. Present Value - annuity What is the PV of $1,000 at the end of each of the next 3 years, if the opportunity cost is 8%?

77. Present Value - annuity What is the PV of $1,000 at the end of each of the next 3 years, if the opportunity cost is 8%?

78. Present Value - annuity What is the PV of $1,000 at the end of each of the next 3 years, if the opportunity cost is 8%?
Calculator Solution:
P/Y = 1 I = 8 N = 3
PMT = -1,000
PV = $2,577.10

79. Present Value - annuity What is the PV of $1,000 at the end of each of the next 3 years, if the opportunity cost is 8%?
Calculator Solution:
P/Y = 1 I = 8 N = 3
PMT = -1,000
PV = $2,577.10

80. Present Value - annuity What is the PV of $1,000 at the end of each of the next 3 years, if the opportunity cost is 8%?

81. Present Value - annuity What is the PV of $1,000 at the end of each of the next 3 years, if the opportunity cost is 8%?
Mathematical Solution:

82. Present Value - annuity What is the PV of $1,000 at the end of each of the next 3 years, if the opportunity cost is 8%?
Mathematical Solution:
PV = PMT (PVIFA i, n )

83. Present Value - annuity What is the PV of $1,000 at the end of each of the next 3 years, if the opportunity cost is 8%?
Mathematical Solution:
PV = PMT (PVIFA i, n )
PV = 1,000 (PVIFA .08, 3 ) (use PVIFA table, or)

84. Present Value - annuity What is the PV of $1,000 at the end of each of the next 3 years, if the opportunity cost is 8%?
Mathematical Solution:
PV = PMT (PVIFA i, n )
PV = 1,000 (PVIFA .08, 3 ) (use PVIFA table, or) 1
PV = PMT (1 + i)n i

86. Present Value - annuity What is the PV of $1,000 at the end of each of the next 3 years, if the opportunity cost is 8%?
Mathematical Solution:
PV = PMT (PVIFA i, n )
PV = 1,000 (PVIFA .08, 3 ) (use PVIFA table, or) 1
PV = PMT (1 + i)n i
PV = (1.08 )3 = $2,577.10
.08

87. Other Cash Flow Patterns
The Time Value of Money 1 2 3
Other Cash Flow Patterns

88. Perpetuities
Suppose you will receive a fixed payment every period (month, year, etc.) forever. This is an example of a perpetuity.
You can think of a perpetuity as an annuity that goes on forever.

89. Present Value of a Perpetuity
When we find the PV of an annuity, we think of the following relationship:

90. Present Value of a Perpetuity
When we find the PV of an annuity, we think of the following relationship:
PV = PMT (PVIFA i, n )

91. Mathematically,

92. Mathematically,
(PVIFA i, n ) =

93. Mathematically,
(PVIFA i, n ) =
1 - 1
(1 + i) n i

94. 1 - i Mathematically, 1 (PVIFA i, n ) = (1 + i)
We said that a perpetuity is an annuity where n = infinity. What happens to this formula when n gets very, very large?
1 - 1
(1 + i) n i

95. When n gets very large,

96. When n gets very large,
1 - 1
(1 + i) n i

97. When n gets very large,
this becomes zero.
1 - 1
(1 + i) n i

98. 1 - 1 i i When n gets very large, this becomes zero. 1 (1 + i)
So we’re left with PVIFA =
1 - 1
(1 + i) n i 1 i

99. Present Value of a Perpetuity
So, the PV of a perpetuity is very simple to find:

100. Present Value of a Perpetuity
So, the PV of a perpetuity is very simple to find:
PMT i
PV =

101. What should you be willing to pay in order to receive $10,000 annually forever, if you require 8% per year on the investment?

102. What should you be willing to pay in order to receive $10,000 annually forever, if you require 8% per year on the investment?
PMT $10,000 i
PV = =

103. What should you be willing to pay in order to receive $10,000 annually forever, if you require 8% per year on the investment?
PMT $10,000 i
= $125,000
PV = =

104. Ordinary Annuity vs. Annuity Due
$ $ $1000

105. Begin Mode vs. End Mode

106. Begin Mode vs. End Mode 4 5 6 7 8 ordinary annuity 1000 1000 1000
year year year
ordinary annuity

107. PV Begin Mode vs. End Mode 4 5 6 7 8 ordinary annuity in END Mode
year year year PV in
END
Mode
ordinary annuity

108. PV FV Begin Mode vs. End Mode 4 5 6 7 8 in END Mode in END Mode
year year year PV in
END
Mode FV in
END
Mode
ordinary annuity

109. Begin Mode vs. End Mode 4 5 6 7 8 annuity due 1000 1000 1000
year year year
annuity due

110. PV Begin Mode vs. End Mode 4 5 6 7 8 annuity due in BEGIN Mode
year year year PV in
BEGIN
Mode
annuity due

111. PV FV Begin Mode vs. End Mode 4 5 6 7 8 in BEGIN Mode in BEGIN Mode
year year year PV in
BEGIN
Mode FV in
BEGIN
Mode
annuity due

112. Earlier, we examined this “ordinary” annuity:

113. Earlier, we examined this “ordinary” annuity:

114. Earlier, we examined this “ordinary” annuity:
Using an interest rate of 8%, we find that:

115. Earlier, we examined this “ordinary” annuity:
Using an interest rate of 8%, we find that:
The Future Value (at 3) is $3,

116. Earlier, we examined this “ordinary” annuity:
Using an interest rate of 8%, we find that:
The Future Value (at 3) is $3,
The Present Value (at 0) is $2,

117. What about this annuity?
Same 3-year time line,
Same 3 $1000 cash flows, but
The cash flows occur at the beginning of each year, rather than at the end of each year.
This is an “annuity due.”

118. Future Value - annuity due If you invest $1,000 at the beginning of each of the next 3 years at 8%, how much would you have at the end of year 3?

119. Future Value - annuity due If you invest $1,000 at the beginning of each of the next 3 years at 8%, how much would you have at the end of year 3?
Calculator Solution:
Mode = BEGIN P/Y = 1 I = 8
N = PMT = -1,000
FV = $3,506.11

120. Future Value - annuity due If you invest $1,000 at the beginning of each of the next 3 years at 8%, how much would you have at the end of year 3?
Calculator Solution:
Mode = BEGIN P/Y = 1 I = 8
N = PMT = -1,000
FV = $3,506.11

121. Future Value - annuity due If you invest $1,000 at the beginning of each of the next 3 years at 8%, how much would you have at the end of year 3?
Mathematical Solution: Simply compound the FV of the ordinary annuity one more period:

122. Future Value - annuity due If you invest $1,000 at the beginning of each of the next 3 years at 8%, how much would you have at the end of year 3?
Mathematical Solution: Simply compound the FV of the ordinary annuity one more period:
FV = PMT (FVIFA i, n ) (1 + i)

123. Future Value - annuity due If you invest $1,000 at the beginning of each of the next 3 years at 8%, how much would you have at the end of year 3?
Mathematical Solution: Simply compound the FV of the ordinary annuity one more period:
FV = PMT (FVIFA i, n ) (1 + i)
FV = 1,000 (FVIFA .08, 3 ) (1.08) (use FVIFA table, or)

124. Future Value - annuity due If you invest $1,000 at the beginning of each of the next 3 years at 8%, how much would you have at the end of year 3?
Mathematical Solution: Simply compound the FV of the ordinary annuity one more period:
FV = PMT (FVIFA i, n ) (1 + i)
FV = 1,000 (FVIFA .08, 3 ) (1.08) (use FVIFA table, or)
FV = PMT (1 + i)n - 1 i
(1 + i)

125. Future Value - annuity due If you invest $1,000 at the beginning of each of the next 3 years at 8%, how much would you have at the end of year 3?
Mathematical Solution: Simply compound the FV of the ordinary annuity one more period:
FV = PMT (FVIFA i, n ) (1 + i)
FV = 1,000 (FVIFA .08, 3 ) (1.08) (use FVIFA table, or)
FV = PMT (1 + i)n - 1 i
FV = 1,000 (1.08) = $3,506.11
.08
(1 + i)
(1.08)

126. Present Value - annuity due What is the PV of $1,000 at the beginning of each of the next 3 years, if your opportunity cost is 8%?

127. Present Value - annuity due What is the PV of $1,000 at the beginning of each of the next 3 years, if your opportunity cost is 8%?
Calculator Solution:
Mode = BEGIN P/Y = 1 I = 8
N = PMT = 1,000
PV = $2,783.26

128. Present Value - annuity due What is the PV of $1,000 at the beginning of each of the next 3 years, if your opportunity cost is 8%?
Calculator Solution:
Mode = BEGIN P/Y = 1 I = 8
N = PMT = 1,000
PV = $2,783.26

129. Present Value - annuity due
Mathematical Solution:

130. Present Value - annuity due
Mathematical Solution: Simply compound the FV of the ordinary annuity one more period:

131. Present Value - annuity due
Mathematical Solution: Simply compound the FV of the ordinary annuity one more period:
PV = PMT (PVIFA i, n ) (1 + i)

132. Present Value - annuity due
Mathematical Solution: Simply compound the FV of the ordinary annuity one more period:
PV = PMT (PVIFA i, n ) (1 + i)
PV = 1,000 (PVIFA .08, 3 ) (1.08) (use PVIFA table, or)

133. Present Value - annuity due
Mathematical Solution: Simply compound the FV of the ordinary annuity one more period:
PV = PMT (PVIFA i, n ) (1 + i)
PV = 1,000 (PVIFA .08, 3 ) (1.08) (use PVIFA table, or) 1
PV = PMT (1 + i)n i
(1 + i)

134. Present Value - annuity due
Mathematical Solution: Simply compound the FV of the ordinary annuity one more period:
PV = PMT (PVIFA i, n ) (1 + i)
PV = 1,000 (PVIFA .08, 3 ) (1.08) (use PVIFA table, or) 1
PV = PMT (1 + i)n i
PV = (1.08 ) = $2,783.26
.08
(1 + i)
(1.08)

135. Uneven Cash Flows -10,000 2,000 4,000 6,000 7,000 Is this an annuity?
-10, , , , ,000
Is this an annuity?
How do we find the PV of a cash flow stream when all of the cash flows are different? (Use a 10% discount rate.)

136. Uneven Cash Flows
-10, , , , ,000
Sorry! There’s no quickie for this one. We have to discount each cash flow back separately.

137. Uneven Cash Flows
-10, , , , ,000
Sorry! There’s no quickie for this one. We have to discount each cash flow back separately.

138. Uneven Cash Flows
-10, , , , ,000
Sorry! There’s no quickie for this one. We have to discount each cash flow back separately.

139. Uneven Cash Flows
-10, , , , ,000
Sorry! There’s no quickie for this one. We have to discount each cash flow back separately.

140. Uneven Cash Flows
-10, , , , ,000
Sorry! There’s no quickie for this one. We have to discount each cash flow back separately.

141. PV of Cash Flow Stream: $ 4,412.95
-10, , , , ,000
period CF PV (CF)
0 -10, ,000.00
, ,818.18
, ,305.79
, ,507.89
, ,781.09
PV of Cash Flow Stream: $ 4,412.95

142. Annual Percentage Yield (APY)
Which is the better loan:
8% compounded annually, or
7.85% compounded quarterly?
We can’t compare these nominal (quoted) interest rates, because they don’t include the same number of compounding periods per year!
We need to calculate the APY.

143. Annual Percentage Yield (APY)

144. Annual Percentage Yield (APY)
APY = ( ) m - 1
quoted rate m

145. Annual Percentage Yield (APY)
APY = ( ) m - 1
quoted rate m
Find the APY for the quarterly loan:

146. Annual Percentage Yield (APY)
APY = ( ) m - 1
quoted rate m
Find the APY for the quarterly loan:
APY = ( )
.0785 4

147. Annual Percentage Yield (APY)
APY = ( ) m - 1
quoted rate m
Find the APY for the quarterly loan:
APY = ( )
APY = .0808, or %
.0785 4

148. Annual Percentage Yield (APY)
APY = ( ) m - 1
quoted rate m
Find the APY for the quarterly loan:
The quarterly loan is more expensive than the 8% loan with annual compounding!
APY = ( )
APY = .0808, or %
.0785 4

149. Practice Problems

150. Example
Cash flows from an investment are expected to be $40,000 per year at the end of years 4, 5, 6, 7, and 8. If you require a 20% rate of return, what is the PV of these cash flows?

151. Example
Cash flows from an investment are expected to be $40,000 per year at the end of years 4, 5, 6, 7, and 8. If you require a 20% rate of return, what is the PV of these cash flows? $

152. This type of cash flow sequence is often called a “deferred annuity.” $
This type of cash flow sequence is often called a “deferred annuity.”

153. $
How to solve:
1) Discount each cash flow back to time 0 separately.

154. $
How to solve:
1) Discount each cash flow back to time 0 separately.

155. $
How to solve:
1) Discount each cash flow back to time 0 separately.

156. $
How to solve:
1) Discount each cash flow back to time 0 separately.

157. $
How to solve:
1) Discount each cash flow back to time 0 separately.

158. $
How to solve:
1) Discount each cash flow back to time 0 separately.

159. $
How to solve:
1) Discount each cash flow back to time 0 separately.
Or,

160. 2) Find the PV of the annuity: $
2) Find the PV of the annuity:
PV: End mode; P/YR = 1; I = 20; PMT = 40,000; N = 5
PV = $119,624

161. 2) Find the PV of the annuity: $
2) Find the PV of the annuity:
PV3: End mode; P/YR = 1; I = 20; PMT = 40,000; N = 5
PV3= $119,624

162. $
119,624

163. 119,624 Then discount this single sum back to time 0. $
119,624
Then discount this single sum back to time 0.
PV: End mode; P/YR = 1; I = 20;
N = 3; FV = 119,624;
Solve: PV = $69,226

164. 69,226 $
119,624

165. The PV of the cash flow stream is $69,226. $
119,624
The PV of the cash flow stream is $69,226.

166. Retirement Example
After graduation, you plan to invest $400 per month in the stock market. If you earn 12% per year on your stocks, how much will you have accumulated when you retire in 30 years?

167. Retirement Example
After graduation, you plan to invest $400 per month in the stock market. If you earn 12% per year on your stocks, how much will you have accumulated when you retire in 30 years? 1 2 3

168. 1 2 3

169. Using your calculator, N = 360 PMT = -400 I%YR = 12 FV = $1,397,985.65 1 2 3
Using your calculator,
P/YR = 12
N = 360
PMT = -400
I%YR = 12
FV = $1,397,985.65

170. Retirement Example If you invest $400 at the end of each month for the next 30 years at 12%, how much would you have at the end of year 30?

171. Retirement Example If you invest $400 at the end of each month for the next 30 years at 12%, how much would you have at the end of year 30?
Mathematical Solution:

172. Retirement Example If you invest $400 at the end of each month for the next 30 years at 12%, how much would you have at the end of year 30?
Mathematical Solution:
FV = PMT (FVIFA i, n )

173. Retirement Example If you invest $400 at the end of each month for the next 30 years at 12%, how much would you have at the end of year 30?
Mathematical Solution:
FV = PMT (FVIFA i, n )
FV = 400 (FVIFA .01, 360 ) (can’t use FVIFA table)

174. Retirement Example If you invest $400 at the end of each month for the next 30 years at 12%, how much would you have at the end of year 30?
Mathematical Solution:
FV = PMT (FVIFA i, n )
FV = 400 (FVIFA .01, 360 ) (can’t use FVIFA table)
FV = PMT (1 + i)n - 1 i

175. Retirement Example If you invest $400 at the end of each month for the next 30 years at 12%, how much would you have at the end of year 30?
Mathematical Solution:
FV = PMT (FVIFA i, n )
FV = 400 (FVIFA .01, 360 ) (can’t use FVIFA table)
FV = PMT (1 + i)n - 1 i
FV = (1.01) = $1,397,985.65
.01

176. House Payment Example
If you borrow $100,000 at 7% fixed interest for 30 years in order to buy a house, what will be your monthly house payment?

177. House Payment Example
If you borrow $100,000 at 7% fixed interest for 30 years in order to buy a house, what will be your monthly house payment?

178. 1 2 3
? ? ? ?

179. P/YR = 12 I%YR = 7 PV = $100,000 PMT = -$665.301 2 3
? ? ? ?
Using your calculator,
P/YR = 12
N = 360
I%YR = 7
PV = $100,000
PMT = -$665.30

180. House Payment Example
Mathematical Solution:

181. House Payment Example
Mathematical Solution:
PV = PMT (PVIFA i, n )

182. House Payment Example Mathematical Solution: PV = PMT (PVIFA i, n )
100,000 = PMT (PVIFA .07, 360 ) (can’t use PVIFA table)

183. House Payment Example Mathematical Solution: PV = PMT (PVIFA i, n )
100,000 = PMT (PVIFA .07, 360 ) (can’t use PVIFA table) 1
PV = PMT (1 + i)n i

184. House Payment Example Mathematical Solution: PV = PMT (PVIFA i, n )
100,000 = PMT (PVIFA .07/12, 360 ) (can’t use PVIFA table) 1
PV = PMT (1 + i)n i
100,000 = PMT ( ) PMT=$665.30

185. Team Assignment
Upon retirement, your goal is to spend 5 years traveling around the world. To travel in style will require $250,000 per year at the beginning of each year.
If you plan to retire in 30 years, what are the equal monthly payments necessary to achieve this goal? The funds in your retirement account will compound at 10% annually.

186. How much do we need to have by the end of year 30 to finance the trip?27 28 29 30 31 32 33 34 35
How much do we need to have by the end of year 30 to finance the trip?
PV30 = PMT (PVIFA .10, 5) (1.10) =
= 250,000 (3.7908) (1.10) =
= $1,042,470

187. 27 28 29 30 31 32 33 34 35
Using your calculator,
Mode = BEGIN
PMT = -$250,000
N = 5
I%YR = 10
P/YR = 1
PV = $1,042,466

188. 27 28 29 30 31 32 33 34 35
1,042,466
Now, assuming 10% annual compounding, what monthly payments will be required for you to have $1,042,466 at the end of year 30?

189. 27 28 29 30 31 32 33 34 35
1,042,466
Using your calculator,
Mode = END
N = 360
I%YR = 10
P/YR = 12
FV = $1,042,466
PMT = -$461.17

190. So, you would have to place $461
So, you would have to place $ in your retirement account, which earns 10% annually, at the end of each of the next 360 months to finance the 5-year world tour.