discounted cash flow valuation - contents.kocw.or.krcontents.kocw.or.kr/document/chapter_4.pdf ·...
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Chapter 4
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Discounted Cash Flow Valuation
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Acknowledgement
• This work is reproduced, based on the book [Ross, Westerfield, Jaffe and Jordan “Core Principles and Applications of Corporate Finance”].
• This work can be used in the financial management course with the original text book.
• This work uses the figures and tables from the original text book.
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Future Value
• In the one-period case, the formula for FV can be written as:
FV = C0×(1 + r)
Where C0 is cash flow today (time zero), and r is the appropriate interest rate.
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Present Value
• In the one-period case, the formula for PV can be written as:
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rCPV+
=1
1
Where C1 is cash flow at date 1, and
r is the appropriate interest rate.
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Net Present Value
In the one-period case, the formula for NPV can be written as:
NPV = –Cost + PV
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4.2 The Multiperiod Case
• The general formula for the future value of an investment over many periods can be written as:
FV = C0×(1 + r)T
Where C0 is cash flow at date 0,
r is the appropriate interest rate, and
T is the number of periods over which the cash is invested.
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Valuing a Stream of Cash Flows
• Continuing in the same fashion, we can solve the problem as follows: 10% interest rate
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Simple and Compound Interest
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Cited by the text book (p. 123)
• Future Value of $100 at 10 percent
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4-9 Cited by the text book (p. 123)
Simple and Compound Interest
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Futures Values
• Future Value Interest Factors
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Cited by the text book (p. 124)
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Present Value and Discounting
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0 1 2 3 4 5
• Discounting
Cited by the text book (p. 127)
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Present Value – Important Relationship
• For a given interest rate – the longer the time period, the lower the present value
• For a given time period – the higher the interest rate, the smaller the present value
5C-12 Cited by the text book (p. 128)
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4.3 Compounding Periods
• Your investment compounding periods may not be annual, but any of a variety of time periods.
• You assumed annual interest rates; however, many projects / investments have different periods.
• For example, bonds typically pay interest semi-annually, and house loans are on a monthly payment schedule.
• Compounding an investment m times a year for T years provides for the future value of wealth:
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mT
mrCFV
+×= 10
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Effective Annual Rates of Interest
• Stated or quoted interest rate – rate before considering any compounding effects, such as 10% compounded quarterly
• Effective annual rate of interest – rate on an annual basis that reflects compounding effects (e.g., 10% compounded quarterly has an effective rate of 10.38%).
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EAR = [1 + (quoted rate)/m]m – 1, where m is the number of periods per year
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Effective Annual Rates of Interest
• A reasonable question to ask in the above example is “what is the effective annual rate of interest on that investment?”
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• The Effective Annual Rate (EAR) of interest is the annual rate that would give us the same end-of-investment wealth after 3 years:
93.70$)06.1(50$)212.1(50$ 632 =×=+×= ×FV
93.70$)1(50$ 3 =+× EAR
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Effective Annual Rates of Interest
So, investing at 12.36% compounded annually is the same as investing at 12% compounded semi-annually.
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93.70$)1(50$ 3 =+×= EARFV
50$93.70$)1( 3 =+ EAR
1236.150$
93.70$ 31
=−
=EAR
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4.4 Simplifications
• Perpetuity – A constant stream of cash flows that lasts forever
• Growing perpetuity – A stream of cash flows that grows at a constant rate forever
• Annuity – A stream of constant cash flows that lasts for a fixed number of
periods • Growing annuity
– A stream of cash flows that grows at a constant rate for a fixed number of periods
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Perpetuity
A constant stream of cash flows that lasts forever
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0
… 1
C
2
C
3
C
++
++
++
= 32 )1()1()1( rC
rC
rCPV
rCPV =
Cited by the text book (p. 137)
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Growing Perpetuity
A growing stream of cash flows that lasts forever
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0
… 1
C
2
C×(1+g)
3
C ×(1+g)2
+++×
+++×
++
= 3
2
2 )1()1(
)1()1(
)1( rgC
rgC
rCPV
grCPV−
=
Cited by the text book (p. 138)
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Annuity
A constant stream of cash flows with a fixed maturity
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0 1
C
2
C
3
C
TrC
rC
rC
rCPV
)1()1()1()1( 32 ++
++
++
+=
+
−= TrrCPV
)1(11
T
C
Cited by the text book (p. 140)
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Growing Annuity
A growing stream of cash flows with a fixed maturity
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0 1
C
T
T
rgC
rgC
rCPV
)1()1(
)1()1(
)1(
1
2 ++×
++++×
++
=−
++
−−
=T
rg
grCPV
)1()1(1
2
C×(1+g)
3
C ×(1+g)2
T
C×(1+g)T-1
Cited by the text book (p. 141)
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4.5 Loan Types and Loan Amortization
• Pure Discount Loans are the simplest form of loan. The borrower receives money today and repays a single lump sum (principal and interest) at a future time.
• Interest-Only Loans require an interest payment each period, with full principal due at maturity.
• Amortized Loans require repayment of principal over time, in addition to required interest.
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References • Ross, Westerfield, Jaffe and Jordan, Core Principles and
Application of Corporate Finance, 3ed, McGraw Hill. • Jordan, Miller, and Dolvin, Fundamentals of Investments, 6ed,
MacGraw Hill. • Berk, DeMarzo and Harford, Fundamentals of Corporate
Fiance, 2nd ed, Pearson.
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