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Chapter 5. The Time Value of Money. Time Value. The process of expressing the present in the future (compounding) the future in the present (discounting). Time Value. Payments are either a single payment a series of equal payments (an annuity). Time Value.
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Chapter 5 The Time Value of Money
Time Value • The process of expressing • the present in the future (compounding) • the future in the present (discounting)
Time Value • Payments are either • a single payment • a series of equal payments (an annuity)
Time Value • Time value of money problems may be solved by using • Interest tables • Financial calculators • Software
Variables for Time Value of Money Problems • PV = present value • FV = future value • PMT = annual payment • N = number of time periods • I = interest rate per period
Financial Calculators • Express the cash inputs (PV, FV, and PMT) as cash inflows and cash outflows • At least one of the cash variables must be • an inflow (+) • an outflow (-)
Future Value • The future value of $1 takes a single payment in the present into the future • The general equation for the future value of $1: P0(1 + i)n = Pn
Future Value Illustrated • PV = -100 • I = 8 • N = 20 • PMT = 0 • FV = ? • = 466.10
Greater Terminal Values • Higher interest rates • Longer time periods • Result in greater terminal values
Present Value • The present value of $1 brings a single payment in the future back to the present • The general equation for the present value of $1:P0 = Pn (1+i)n
Present Value Illustrated • FV = 100 • I = 6 • N = 5 • PMT = 0 • PV = ? • = -74.73
Lower Present Values • Higher interest rates • Longer time periods • Result in lower present values
Annuities - Future Sum • The future sum of annuity takes a series of payments into the future • Payments may be made • at the end of each time period (ordinary annuity) • at the beginning of each time period (annuity due)
FV Time Lines • Ordinary annuity Year Payment - $100 100 100 0 1 2 3
FV Time Lines • Annuity due Year Payment$100 100 100 - 0 1 2 3
Future Value of an Ordinary Annuity Illustrated • PV = 0 • PMT = -100 • I = 5 • N = 3 • FV = ? • = 315.25
Greater Terminal Values • Higher interest rates • Longer time periods • Result in greater terminal values
Annuities - Present Value • The present value of an annuity brings a series of payments in the future back to the present
Present Value of an Ordinary Annuity Illustrated • FV = 0 • PMT = 100 • I = 6 • N = 3 • PV = ? • = -267.30
Annuities - Present Value • Higher interest rates result in lower present values • But longer time periods increases the present value (because more payments are received)
Additional Time Value Illustrations • The following is a series of problems or questions that use the time value of money.
Illustration 1 • You deposit $1,000 in an account at the end of each year for twenty years. What is the total amount in the account if you earn 6 percent annually?
Future Value of an Ordinary Annuity • The unknown: FV • The givens: • PV = 0 • PMT = -1,000 • N = 20 • I = 6 The answer:$36,786
Interpretation • For an annual cash payment of $1,000, you will have $36,786 after twenty years • Of the $36,786 • $20,000 is the total cash outflow • $16,786 is the earned interest
Illustration 2 • What is the present value of (or required cash outflow to purchase) an ordinary annuity of $1,000 for twenty years, if the rate of interest is 6 percent?
Present Value of an Annuity • The unknown: PV • The givens: • FV = 0 • PMT = 1,000 • N = 20 • I = 6 The answer:$11,470
Interpretation • For a present payment of $11,470, the individual will annually receive $1,000 for the next twenty years • The $11,470 is an immediate cash outflow • The $1,000 annual payment to be received is a cash inflow
Illustration 3 • What is the future value after ten years of a stock that cost $10 and appreciates at 9 percent annually?
Future Value of $1 • The unknown: FV • The givens: • PV = 10 • PMT = 0 • N = 10 • I = 9 The answer: $23.67
Interpretation • A $10 stock will be worth $23.67 after 10 year if its price grows 9% annually.
Illustration 4 • What is the cost of a stock that was sold for $23.67, held for 10 years and whose value appreciated 9 percent annually?
Present Value of $1 • The unknown: PV • The givens: • FV = 23.67 • PMT = 0 • N = 10 • I = 9 The answer:$10
Interpretation • $23.67 received after ten years is worth $10 today if the return rate is 9 percent.
Interpretation of Future and Present Values These two problems are the same: • In the first case the $10 is compounded into its future value ($23.67) • In the second case the future value ($23.67) is discounted back to its present value ($10)
Illustration 5 • A stock was purchased for $10 and sold for $23.67 after 10 years. What was the return?
Future Value of I • The unknown: I • The givens: • PV = 10 • PMT = 0 • N = 0 • FV = 23.67 The answer: 9%
Interpretation • The yield on a $10 investment that was sold after 10 years for $23.67 is 9%.
Illustration 6 • If an investment pay $50 a year for 10 years and repays $1,000 after 10 years, what is this investment worth today if you can earn 6 percent?
Determination of Present Value • The unknown: PV • The givens: • FV = 1,000 • PMT = 50 • I = 6 • N = 10 The answer: $926
Interpretation • If you collect $50 a year for 10 years and receive $1,000 after 10 years, those cash inflows are currently worth $926 at 6 percent.
Illustration 7 • Time value is used to determine a loan repayment schedule such as a mortgage.
Loan Repayment Schedule • Amount borrowed (PV) = $80,000 • Interest rate (I) = 8% • Term of the loan (N) = 25 years • No future value since loan is repaid • Amount of the annual payment = $7,494.30
Illustration 8 • You have $115,000 and spend $24,000 a year. If you earn 8% annually, how long will your funds last?
Determination of Number of Years • The unknown: N • The givens: • PV = 115,000 • I = 8 • FV = 0 • PMT = -24,000 The answer: 6.3 years
Interpretation • If you have $115,000 and earn 8 percent annually, you can spend $24,000 per year for approximately 6 years and 4 months.