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1 The Time Value of Money Introduction to Time Value of Money, TVM Future Value, FV Lump-sum amount Annuity Uneven cash flow Present Value, PV Lump-sum amount Annuity Uneven cash flow FV and PV Comparison Solving for r and n Intra-year Interest Compounding Amortization

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2 Time Value of Money Why is it important to understand and apply time value of money concepts? What is the difference between a present value amount and a future value amount? What is an annuity? What is the difference between the Annual Percentage Rate and the Effective Annual Rate? What is an amortized loan? How is the return on an investment determined?

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3 The Time Value of Money Time value of money is considered the most important concept in finance Mathematics of finance “Nuts & Bolts” of financial analysis— apply of TVM concepts to determine value Interest = Rate of return = r = i = k = Y

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4 The Time Value of Money “$1 received today is more valuable than $1 received in one year.” Why? Because if you have the opportunity to earn a positive return, investing the $1 today will cause it to grow to greater than $1 in one year. For example, $1 invested at 5 percent will grow to $1.05 in one year because 5¢ of interest will be earned.

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5 Future Value and Present Value Future Value (FV)—determine to what amount an investment will grow over a particular time period re-invested interest (earned in previous periods) earns interest compounding—interest compounds or grows the investment Present value (PV)—determine the current value of an amount that will be paid, or received, at some time in the future PV is the future amount restated in current dollars; future interest has not been earned, thus it is not included in the PV discounting—deflate, or discount, the future amount by future interest that can be earned (“deinterest” the FV)

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6 Lump-Sum Amounts, Annuities, and Uneven Cash Flow Streams Lump-sum amount—a single amount invested (received) today or in the future; growth in value is the result of interest only Annuity—equal payments made (received) at equal intervals; growth in value is the result of additional payments as well as interest ordinary annuity—end of period payments annuity due—beginning of period payments Uneven Cash Flows—payments that are not all equal that are generally made (received) at equal intervals; growth in value is the result of additional payments as well as interest

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7 Cash Flow Time Lines Helps you to visualize the timing of the cash flows associated with a particular situation Constructing a cash flow time line is easy: Time01234 Cash Flows -500 r = 10% FV n = ?

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8 Approaches to TVM Solutions Time line solution Solve using a cash flow time line Equation (numerical) solution Use equations to solve the problem Financial calculator solution Financial calculators are programmed to solve time value of money problems using the numerical solution Spreadsheet solution Spreadsheets contain functions that can be used to solve time value of money problems using the numerical solution Interest tables Obsolete

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9 Future Value Determine to what amount an investment will grow over a particular time period if it is invested at a positive rate of return. Compounding Lump-sum amount Annuity Uneven cash flow stream

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10 Future Value, FV, of a Lump-Sum Amount Example: If you invest $500 today at 10%, what will the investment be worth in four years if interest is paid annually? Time01234 Cash Flows -500 r = 10% FV n = ?

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11 Future Value Graphically, these computations are: 0 1 2 3 4 10% × 1.10 -500 End of year amount = 550.00= 605.00 = 665.50 = 732.05 × 1.10 FV 4 = 500(1.10 x 1.10 x 1.10 x 1.10) = 500(1.10) 4 =732.05

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12 Future Value The future value of an amount invested today for n years, FV n, can be found using the following equation: FV n = PV(1 + r) n = PV(interest multiple) FV n = future value in period n PV= present, or current, value r= interest rate per period n= number of periods interest is earned

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13 Equation (Numerical) Solution Determined by applying the appropriate equation: FV n = PVx(1 + r) n In our example: PV = $500, r = 10.0%, n = 4 FV n = 500x(1 + r) n In our example: PV = $500, r = 10.0%, n = 4 FV n = 500x(1.10) n In our example: PV = $500, r = 10.0%, n = 4 FV 4 = 500x(1.10) 4 In our example: PV = $500, r = 10.0%, n = 4 FV 4 = 500x(1.10) 4 = 732.05

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14 Financial Calculator Solution In our example: PV = $500, r = 10.0%, n = 4 N I/Y PV PMT FV In our example: PV = $500, r = 10.0%, n = 4 4 In our example: PV = $500, r = 10.0%, n = 4 410 In our example: PV = $500, r = 10.0%, n = 4 410-500 In our example: PV = $500, r = 10.0%, n = 4 410-5000 In our example: PV = $500, r = 10.0%, n = 4 410-5000? In our example: PV = $500, r = 10.0%, n = 4 410-5000? 732.05

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15 Future Value of an Annuity Annuity—a series of equal payments that are made at equal intervals Ordinary annuity—end of the period Annuity due—beginning of the period The future value of an annuity, FVA, can be computed by solving for the future value of a lump-sum amount

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16 Future Value of an Annuity, FVA -100 Time Cash Flows 0123 -100 7% -100 x (1.07) 0 100.00 x (1.07) 1 107.00 x (1.07) 2 114.49 FVA = 321.49 FVA = 100(1.07) 2 + 100(1.07) 1 + 100(1.07) 0 = 321.49 = 100[(1.07) 2 + (1.07) 1 + (1.07) 2 ] = 100(3.2149) = 321.49

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17 FVA— Equation (Numerical) Solution In our example: PMT = $100, r = 7%, n = 3

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18 FVA—Annuity Due Annuity due is an annuity with cash flows that occur at the beginning of the period. When compared to an ordinary annuity, which has end-of-period cash flows, the cash flows of an annuity due earn one additional period of interest.

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19 FVA—Annuity Due 100.00 x (1.07) 1 107.00 x (1.07) 2 Time Cash Flows 0123 7% 114.49 FVA = 321.49 114.49 107.00 x (1.07) 114.49 x (1.07) 122.50 FVA(DUE) = -100 -100-100-100 x (1.07) x (1.07) 0 343.99

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20 FVA(DUE)—Equation (Numerical) Solution In our example: PMT = $100, r = 7%, n = 3 FVA(DUE) n = PMTFVA= PMT

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21 FVA—Financial Calculator Solution N I/Y PV PMT FV 321.49 In our example: n = 3, r = 7%, PMT = $100 3 In our example: n = 3, r = 7%, PMT = $100 37.0 In our example: n = 3, r = 7%, PMT = $100 37.00 In our example: n = 3, r = 7%, PMT = $100 37.00-100 In our example: n = 3, r = 7%, PMT = $100 37.00-100? FVA = 37.00-100? N I/Y PV PMT FV 343.99 BEGIN FVA(DUE) =

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Solutions: Future value computations FV of $25,000 lump-sum amount: N = 5, I/Y = 5, PV = -25,000, PMT = 0, FV = ? FV of $5,499.40 annuity: N = 5, I/Y = 5, PV = 0, PMT = -5,499.40, FV = ? FV of $25,000 lump-sum amount: N = 5, I/Y = 5, PV = -25,000, PMT = 0, FV = 31,907 FV of $5,499.40 annuity: N = 5, I/Y = 5, PV = 0, PMT = -5,499.40, FV = 31,907

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23 Uneven Cash Flow Streams Uneven cash flow stream—cash flows that are not all the same (equal) Simplifying techniques (that is, using a single equation) used to compute FVA cannot be used

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24 FV—Uneven Cash Flow Streams -600-200 4% -400 0123 200.00 416.00 648.96 _______ 1,264.96

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25 FV of Uneven Cash Flow Streams— Equation (Numerical) Solution

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26 FV of Uneven CF Streams—Calculator Solution Input the cash flows, find the present value, PV, and then compute the future value, FV, of PV. Discussed in the next section.

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27 Present Value Determine the current value of an amount that will be paid, or received, at a particular time in the future. Finding the present value (PV), or discounting, an amount to be received (paid) in the future is the reverse of compounding, or determining the future value of an amount invested today. We find the PV by “de-interesting” the FV.

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28 Present Value—Lump-Sum Amount What is the PV of $800 to be received in four years if your opportunity cost is 8 percent? Stated differently: How much would you be willing to pay today for an investment that will pay $800 in four years if you have the opportunity to invest at 8 percent per year?

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29 Present Value—Lump-Sum Amount 8% PV = ?Cash Flows 800 0 1 2 3 4Time

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30 Present Value—Equation (Numerical) Solution Remember that FV is computed as follows: FV = PVx(1 + r) n In our example, FV 4 = 800, n = 4, r = 8.0% 800 = PVx(1 + r) n In our example, FV 4 = 800, n = 4, r = 8.0% 800 = PVx(1.08) n In our example, FV 4 = 800, n = 4, r = 8.0% 800 = PVx(1.08) 4 In our example, FV 4 = 800, n = 4, r = 8.0% Remember that FV is computed as follows: 800=PVx(1.08) 4 800 = PVx1.36049 PV=800/1.36049 = 588.02 PV=800/1.36049

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31 Present Value—Equation (Numerical) Solution 588.02 3) 800(0.7350 4 (1.08) 1 800 PV Equation: In our example: FV = $800, r = 8.0%, and N = 4

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32 Present Value—Time Line Solution Graphically, this computation is: 0 1 2 3 4 8% 588.02 End of year amount 635.07685.87740.74 800.00

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33 PV Lump-Sum Amount—Financial Calculator Solution In our example: FV = $800, r = 8.0%, n = 4 N I/Y PV PMT FV In our example: FV = $800, r = 8.0%, n = 4 4 In our example: FV = $800, r = 8.0%, n = 4 48.0 In our example: FV = $800, r = 8.0%, n = 4 48.00800 In our example: FV = $800, r = 8.0%, n = 4 48.00 In our example: FV = $800, r = 8.0%, n = 4 48.0? 0800 -588.02

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34 Present Value of an Annuity, PVA 100 7% 100 0123 93.46 87.34 81.63 262.43 = PVA 262.43

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35 PVA—Equation (Numerical) Solution In our example: PMT = $100, r = 7%, n = 3

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36 PVA—Annuity Due Annuity due is an annuity with cash flows that occur at the beginning of the period.

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37 PVA—Annuity Due 100 7% 100 0123 93.46 87.34 81.63 262.43 = PVA 100 7% 100 0123 7% 100 0123 (1.07) 100.00 93.46 87.34 280.80 (DUE)

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38 PVA(DUE)—Equation (Numerical) Solution In our example: PMT = $100, r = 7%, n = 3 PVA = PMT PVA(DUE) n = PMT x (1 + r)

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39 PVA—Financial Calculator Solution N I/Y PV PMT FV -262.43 In our example: n = 3, r = 7%, PMT = $100 37.01000 In our example: n = 3, r = 7%, PMT = $100 37.0?1000 = PVA In our example: n = 3, r = 7%, PMT = $100 -280.80 N I/Y PV PMT FV 37.01000 BEGIN 37.01000 BEGIN 37.0?1000 = PVA(DUE)

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Calculator Solution: N = 5, I/Y = 5, PMT = -5,499.40, FV = 0, PV = 25,000 Calculator Solution: N = 5, I/Y = 5, PMT = -5,499.40, FV = 0, PV = ? Numerical Solution:

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41 Uneven Cash Flow Streams Uneven cash flow stream—cash flows that are not all the same (equal) Simplifying techniques (that is, using a single equation) used to compute PVA cannot be used

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42 Present Value of an Uneven Cash Flow Stream 600200 4% 400 0123 576.92 369.82 177.80 1,124.54

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43 PV of Uneven Cash Flows— Equation (Numerical) Solution

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44 PV of Uneven Cash Flows—Financial Calculator Solution Use the cash flow (CF) register (see calculator instructions) Input CFs in the order they occur—that is, first input CF 1, then input CF 2, and so on CF 0 —most calculators require you to input a value for before entering any other cash flows Enter the value for I NPV = PV of uneven cash flows

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45 PV of Uneven Cash Flows—Financial Calculator Solution CF 0 = 0 CF 1 =600 CF 2 =400 CF 3 =200 r=4% Compute NPV = 1,124.54

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46 FV of Uneven CF Streams—Calculator Solution Input the cash flows, find the present value, PV, and then compute the future value, FV, of PV In our example, PV = $1,124.54, so the future value is: FV = $1,124.54(1.04) 3 = $1,264.95

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Calculator solution: CF 0 = 0 CF 1 = 2 million CF 2 = 4 million CF 3 = 5 million Numerical solution: PV =($2 million)/(1.06) 1 + ($4 million)/(1.06) 2 + ($5 million)/(1.06) 3 =($2 million)(0.943396) + ($4 million)(0.889996) +($5 million)(0.839619) =1.8868 + 3.5600 + 4.1981 = 9.6449 I = 6 NPV = 9.6448

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48 Comparison of PVA, FVA, and Lump-Sum Amount PMT= $100; r = 7%; n = 3 FVA= $321.49 PVA= $262.43 100 7% 100 0123 PVA = 262.43FVA = 321.49 FV = 262.43 x (1.07) 3 = 321.49 PV = 321.49/(1.07) 3 = 262.43 AB C

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49 PVA, FVA, and Lump-Sum Amount PMT = $100; r = 7%; n = 3; PVA = $262.43 1$262.43$18.37$280.80$100.00 2180.8012.66193.46100.00 393.466.54100.00100.00 PMT = $100; r = 7%; n = 3; PVA = $262.43 BeginningInterest Ending Payment/ Year Balance @ 7%BalanceWithdrawal FVA = 321.49

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50 Solving for Time (n) and Interest Rates (r)—Lump Sums The computations for lump-sum amounts included four variables: n, r, PV, and FV. If three of the four variables are known, then we can solve for the unknown variable—e.g., if n, PV, and FV are known, we can solve for r.

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51 Solving for Interest Rates, r—Lump-Sum Amount If $200 that was invested three years ago is now worth $245, what rate of return (r) did the investment earn? -200 Time Cash Flows 0123 245 r = ?

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52 Solving for r for a Lump-Sum—Equation (Numerical) Solution FV =PV(1+r) n 245=200(1+r) 3 = 7.0%

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53 Solving for r for a Lump-Sum—Financial Calculator Solution In our example: PV = $200, FV = $245, n = 3 N I/Y PV PMT FV In our example: PV = $200, FV = $245, n = 3 -200 In our example: PV = $200, FV = $245, n = 3 -200245 In our example: PV = $200, FV = $245, n = 3 3-200245 In our example: PV = $200, FV = $245, n = 3 3-2000245 In our example: PV = $200, FV = $245, n = 3 3?-2000245 7.00

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54 Solving for Number of Years, n—Lump- Sum Amount If $712 is invested at 6 percent, how long will it take to grow to $848? -712848 r = 6% n = ? Time Cash Flows 012 …

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55 Solving for n for a Lump-Sum—Equation (Numerical) Solution

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56 Solving for n for a Lump-Sum—Financial Calculator Solution In our example: PV = $712, FV = $848, r = 6% N I/Y PV PMT FV In our example: PV = $712, FV = $848, r = 6% -712 In our example: PV = $712, FV = $848, r = 6% -712848 In our example: PV = $712, FV = $848, r = 6% 6.0-712848 In our example: PV = $712, FV = $848, r = 6% 6.0-7120848 In our example: PV = $712, FV = $848, r = 6% ?6.0-7120848 3.00

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57 Solving for Time (n) and Interest Rates (r)—Annuities The computations for annuities included four variables: n, r, PMT, and PVA or FVA. If three of the four variables are known, then we can solve for the unknown variable—e.g., if n, PVA (or FVA), and PMT are known, we can solve for r.

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58 Solving for Interest Rates, r, for Annuities The current value of an investment that will pay $300 each year for three years is $817. What rate of return (r) will the investment earn? 300 0123 PVA = -817 r = ? 300

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59 Solving for r for Annuities—Equation (Numerical) Solution To solve, use a trial-and-error process Solution = 5.0%

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60 Solving for r for Annuities—Financial Calculator Solution In our example: PMT = $300, PVA = $817, n = 3 N I/Y PV PMT FV In our example: PMT = $300, PVA = $817, n = 3 3-8173000 5.00 In our example: PMT = $300, PVA = $817, n = 3 3?-8173000

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61 Solving for Number of Years, n, for Annuities If $480 is invested each year at 8 percent, how long will take to grow to $2,816? -480 FVA = 2,816 r = 8% n = ? Time Cash Flows 012 … -480

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62 Solving for n for Annuities—Equation (Numerical) Solution To solve, use a trial-and-error process Solution = 5 years

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63 Solving for n for Annuities—Financial Calculator Solution In our example: PMT = $480, FVA = $2,816, r = 8% N I/Y PV PMT FV In our example: PMT = $480, FVA = $2,816, r = 8% 8.00-480 2,816 5.00 In our example: PMT = $480, FVA = $2,816, r = 8% ?8.0-480 2,816

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64 Solving for r for Uneven Cash Flows Internal Rate of Return (IRR)—average rate of return an investment earns Capital budgeting decisions—decisions concerning what investments a firm should purchase

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65 Intra-Year Interest Compounding Interest is compounded more than once per year—quarterly, monthly, or daily Adjustments to computations: Use the interest rate per compounding period and the number of interest compounding periods during the life of the investment, or Use the effective annual rate, EAR, and the number of years to maturity

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66 Intra-Year Interest Compounding— Example How much will an amount invested today grow to in two years if interest is paid quarterly? PV = $200 and r = 8% Quarterly interest = 8%/4 = 2% = r/m Number of interest payments = 2 years x 4 = 8 = n 200.00 x 1.02 204.00 0 Quarter Year 0 1 r = 2% 2 34 1 8 2 … x 1.02 208.08 x 1.02 212.24 x 1.02 216.49 FV n = PV(1 + r) n =FV n = PV(1 + r) n = 200(1.02) 8 = 200(1.17166) = 234.33 234.33

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67 Intra-Year Interest Compounding Financial calculator solution: N I/Y PVPMTFV 82.0-2000? 234.33 Financial calculator solution:

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68 Intra-Year Interest Compounding—Effective Annual Rate Interest = 8%, compounded quarterly r = 8% per year is the simple, or non-compounded rate r/m = 2% per quarter is the effective rate per compounding period (each quarter; m=4) Effective Annual Rate (EAR), r EAR r EAR = (1 + r/m) m – 1.0 m = number of interest payment periods per year r EAR = (1.02) 4 – 1.0 = 0.08243 = 8.243%

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69 Intra-Year Interest Compounding—Using Effective Annual Rate In our example: PV = $200 n = 2 years r EAR = 8.243% FV n = PV(1 + r EAR ) n = 200(1.08243) 2 = 234.33 = 200(1.02) 8

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70 Annual Percentage Rate, APR, Versus Effective Annual Rate, EAR EAR—the rate of return per year considering interest compounding r EAR = (1 + r/m) m – 1.0 APR—simple rate of return; does not consider compounding APR = r/m x m = r = simple interest r EAR = APR only if interest is paid once per year— that is, annual compounding r EAR > APR if interest is paid more than once per year

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FVA—Financial Calculator Solution N I PV PMT FV 0.016399 In our example: n = 365, PV = -$1, PMT = 0, FV = $1.06168 365?-101.06168 APR = 0.016399 x 365 = 5.986 Advertise: 5.986% compounded daily

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72 Amortized Loans Loan agreement requires equal periodic payments A portion of the payment represents interest on the debt and the remainder is applied to the repayment of the debt Amortization schedule—used to determine what portion of the total payment is interest and what portion is repayment of principal Mortgage payment—only the interest portion is considered an expense for tax purposes

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73 Amortization Schedule—Example Example: $6,655 home-equity loan; r = 6%; n = 2 years; payments are made quarterly The constant payments per quarter represent an annuity and the amount of the loan ($6,655) represents the present value of the loan payments PVA = $6,655; (n x m) = 2 x 4 = 8 payments; r/m = 6%/4 = 1.5% Financial calculator solution: N I/Y PVPMTFV 81.56,655?0 -889

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74 Amortization Schedule—Example Payment = $889 Begin.Payment Interest (I)Loan Repay. YearPmt #Balance (Pmt) [1.5% x Beg Bal] = Pmt – I 11$6,655.00$889$99.83$789.17 25,865.8388987.99801.01 35,064.8288975.97813.03 44,251.7988963.78825.22 253,426.5788951.40837.60 62,588.9788938.83850.17 71,738.8088926.08862.92 8875.88*88913.14875.86* * Rounding difference

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75 Answers to TVM Questions Why is it important to understand and apply time value of money concepts? To be able to compare various investments. What is the difference between a present value amount and a future value amount? Future value adds interest (compounds); present value subtracts interest (“de-interests”). What is an annuity? A series of equal payments that occur at equal time intervals.

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76 What is the difference between the Annual Percentage Rate and the Effective Annual Rate? APR is a simple interest rate quoted on loans/investments, whereas EAR is the actual interest or rate of return. What is an amortized loan? A loan paid off in equal payments over a specified period, which include payments of interest and principal How is the return on an investment determined? Compute the annual rate based on the amount to which an investment will grow in the future. Answers to TVM Questions

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6-1 Chapter 6 The Time Value of Money Future Value Present Value Rates of Return Amortization.

6-1 Chapter 6 The Time Value of Money Future Value Present Value Rates of Return Amortization.

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