CHAPTER 6 Time Value of Money 2 Learning Objectives Distinguish - - PDF document

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CHAPTER 6 Time Value of Money 2 Learning Objectives Distinguish - - PDF document

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1 CHAPTER 6 Time Value of Money 2 Learning Objectives Distinguish between an ordinary annuity and an annuity 1. due, and calculate the present and future values of each. Calculate the present value of a level perpetuity and a 2. growing

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CHAPTER 6

Time Value of Money

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Learning Objectives

1.

Distinguish between an ordinary annuity and an annuity due, and calculate the present and future values of each.

2.

Calculate the present value of a level perpetuity and a growing perpetuity.

3.

Calculate the present and future values of complex cash flow streams.

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Principals Applies in this Chapter

  • Principle 1: Money Has a Time Value
  • Principle 3: Cash Flows Are the Source of Value.

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Ordinary Annuities

An annuity is a series of equal dollar payments that are made at the end of equidistant points in time, such as monthly, quarterly, or annually. If payments are made at the end of each period, the annuity is referred to as ordinary annuity. If payments are made at the beginning of the period, the annuity is referred to as an annuity due.

Ordinary Annuities

  • Example How much money will you accumulate by the

end of year 5 if you deposit $5,000 each year for the next ten years in a savings account that earns 6% per year?

  • Determine the answer by using the equation for

computing the FV of an ordinary annuity.

Figure 6.1 Future Value of a Five-Year Annuity

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The Future Value of an Ordinary Annuity

  • The Future Value of an Ordinary Annuity

Using equation 6-1c, FV = $5000 {[ (1+.06)5 - 1] ÷ (.06)}

= $5,000 { [0.3382] ÷ (.06) } = $5,000 {5.6371} = $28,185.46

The Future Value of an Ordinary Annuity

  • Using a Financial Calculator
  • N=5
  • I/Y = 6.0
  • PV = 0
  • PMT = -5000
  • FV = $28,185.4648
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Solving for the PMT in an Ordinary Annuity

CHECKPOINT 6.1: CHECK YOURSELF

Solving for PMT If you can earn 12 percent on your investments, and you would like to accumulate $100,000 for your newborn child’s education at the end of 18 years, how much must you invest annually to reach your goal?

Step 1: Picture the Problem

You would like to save $100,000 for your child’s education

i=12% Years Cash flow PMT PMT PMT

1 2 … 18

The FV of annuity

for 18 years At 12% = $100, 000 $100,000

We are solving for PMT

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Step 2: Decide on a Solution Strategy

  • Step 3: Solution
  • Using a Financial

Calculator

  • N=18
  • I/Y = 12.0
  • PV = 0
  • FV = 100000
  • PMT = -1,793.73

Step 4: Analyze

  • If we contribute $1,793.73 every year for 18 years, we

should be able to reach our goal of accumulating $100,000 if we earn a 12% return on our investments.

  • Note the last payment of $1,793.73 occurs at the end of

year 18. In effect, the final payment does not have a chance to earn any interest.

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Solving for the Interest Rate in an Ordinary Annuity

  • You can also solve for “interest rate” you must earn on

your investment that will allow your savings to grow to a certain amount of money by a future date.

  • In this case, we know the values of T, PMT, and FVT in

equation 6-1c and we need to determine the value of i.

Solving for the Interest Rate in an Ordinary Annuity (cont.)

  • Example: In 20 years, you are hoping to have saved

$100,000 towards your child’s college education.

  • If you are able to save $2,500 at the end of each year for

the next 20 years, what rate of return must you earn on your investments in order to achieve your goal?

Solving for the Interest Rate in an Ordinary Annuity (cont.)

  • Using a Financial

Calculator

  • N = 20
  • PMT = -$2,500
  • FV = $100,000
  • PV = $0
  • i = 6.77
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Solving for the Number of Periods in an Ordinary Annuity

  • It is easier to solve for number of periods using financial

calculator or Excel spreadsheet, rather than mathematical formula.

Solving for the Number of Periods in an Ordinary Annuity (cont.)

  • Using a Financial

Calculator

  • 1/y = 5.0
  • PV = 0
  • PMT = -6,000
  • FV = 50,000
  • N = 7.14

The Present Value of an Ordinary Annuity

  • The Present Value (PV) of an ordinary annuity measures

the value today of a stream of cash flows occurring in the future.

  • Figure 6.2 shows the PV of ordinary annuity of receiving

$500 every year for the next 5 years at an interest rate of 6%?

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Figure 6.2 Timeline of a Five-Year, $500 Annuity Discounted Back to the Present at 6 Percent

The Present Value of an Ordinary Annuity

  • Step 1: Picture the Problem

 What is the present value of a 10 year ordinary

annuity of $10,000 per year given a 10 percent discount rate?

i=10% Years

Cash flo$10,000 $10,000 $10,000 $10,000 1 2 … 10

Sum up the present Value of all the cash flows to find the PV of the annuity

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Step 2: Decide on a Solution Strategy

  • Step 3: Solution
  • Using a Financial

Calculator

  • N = 10
  • I/Y = 10.0
  • PMT = -10,000
  • FV = 0
  • PV = 61,445.67

Annuities Due

Annuity due is an annuity in which all the cash flows occur at the beginning of each period. For example, rent payments on apartments are typically annuities due because the payment for the month’s rent

  • ccurs at the beginning of the month.
  • Most consumer loans are annuities due
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Annuities Due

Computation of future value of an annuity due requires compounding the cash flows for one additional period, beyond an ordinary annuity. FVADT = (1+i)FVAT Computation of present value of an annuity due requires compounding the cash flows for one additional period, beyond an ordinary annuity. PVADT = (1+i)PVAT

Perpetuities

A perpetuity is an annuity that continues forever or has no

  • maturity. For example, a dividend stream on a share of

preferred stock. There are two basic types of perpetuities:

  • Growing perpetuity in which cash flows grow at a constant rate

from period to period over time.

  • Level perpetuity in which the payments are constant over time.

Calculating the Present Value of a Level Perpetuity

PV = the present value of a level perpetuity PMT = the constant dollar amount provided by the perpetuity i = the interest (or discount) rate per period

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Present Value of a Growing Perpetuity

In growing perpetuities, the periodic cash flows grow at a constant rate each period.

Complex Cash Flow Streams

The cash flows streams in the business world may not always involve one type of cash flows. The cash flows may have a mixed pattern of cash inflows and outflows, single and annuity cash flows.

Complex Cash Flows

  • Suppose you are going to invest $1,000 in a project that

will generate cash flows of $100, 200, 300, 400 and 500

  • ver the next 5 years. The discount rate is 15%.
  • What it the present value of the cash flows?

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Complex Cash Flows

  • Step 1: Picture the problem
  • |_____|_____|_____|____|____|
  • -1000 100 200 300 400 500
  • Step 2: Decide on a solution strategy
  • We will need to compute the PV of each cash flow and add them

up

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Complex Cash Flows

  • Step 3: Solution
  • Year 0: -1000
  • Year 1: 100/(1.15) = 86.9565
  • Year 2: 200/(1.15)2 = 151.2287
  • Year 3: 300/(1.15)3 = 197.2549
  • Year 4: 400/(1.15)4 = 228.7013
  • Year 5: 500/(1.15)5 = 248.5884
  • Sum = -1,000 + 912.7298 = -$87.2702
  • Step 4: Analyze:
  • The expenditure is greater than the PV of the cash inflows
  • This is not a good project

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Complex Cash Flows

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Figure 6-4 Present Value of Single Cash Flows and an Annuity ($ value in millions)

Complex Cash Flows

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