Chapter 11 Time Value of Money Adapted from Financial Accounting 4e by Porter and Norton
Time Value of Money • Prefer payment now vs. in future due to interest factor • Applicable to both personal and business decisions 18
Simple Interest I = P x R x T Dollar amount of interest per year Time in years Principal amount Interest rate as a percentage
Example of Simple Interest Given following data: principal amount = $ 3,000 annual interest rate = 10% term of note = 2 years Calculate interest on the note. 20
Example of Simple Interest Given following data: principal amount = $ 3,000 annual interest rate = 10% term of note = 2 years Calculate interest on the note. P x R x T $ 3,000 x .10 x 2 = $ 600 21
Compound Interest Interest is calculated on principal plus previously accumulated interest Compounding can occur annually, semi-annually, quarterly, etc. 22
Example of Compound Interest Given following data: principal amount = $ 3,000 annual interest rate = 10% term of note = 2 years semiannual compounding of interest Calculate interest on note.
Compound Interest Periods Year 1 Year 2 10% annually 10% annually 5% + 5% semiannually 5% + 5% semiannually 4 periods @ 5% semi-annual interest
Period Beginning Interest Ending Principal at 5% Balance 1 $ 3,000 $ 150 $ 3,150 2 3,150 158 3,308 3 3,308 165 3,473 4 3,473 174 3,647 Example of Compound Interest
Comparing Interest Methods Simple annual interest: $3,000 x .10 x 2 = $ 600 Semiannual compounding: 1 $ 150 2 158 3 165 4 174 Total $ 647
Compound Interest Computations Present value of a single amount Future value of a single amount Present value of an annuity Future value of an annuity
Future Value of Single Amount Known amount of single payment or deposit Future Value + Interest =
Future Value of a Single Amount Example If you invest $10,000 today @ 10% compound interest, what will it be worth 3 years from now? invest $10,000 Future Value? Yr. 1 Yr. 2 Yr. 3 + Interest @ 10% per year
Future Value of a Single Amount Example - Using Formulas n FV = p (1 + i) 3 = $10,000 (1.10) = $13,310
$10,000 PV FV?? Future Value of a Single Amount Example - Using Tables FV = Present Value x FV Factor = $ 10,000 X (3 periods @ 10%) Yr. 1 Yr. 2 Yr. 3
Future Value of $1 (n) 2% 4% 6% 8%10% 1 1.020 1.040 1.060 1.080 1.10 2 1.040 1.082 1.124 1.166 1.210 3 1.061 1.125 1.191 1.260 1.331 4 1.082 1.170 1.262 1.360 1.464 5 1.104 1.217 1.338 1.470 1.611 6 1.126 1.265 1.419 1.587 1.772 7 1.149 1.316 1.504 1.714 1.949 8 1.172 1.369 1.594 1.851 2.144
Future Value of a Single Amount Example - Using Tables FV = Present Value x FV Factor = $ 10,000 X (3 periods @ 10%) = $ 10,000 X 1.331 = $ 13,310 Yr. 1 Yr. 2 Yr. 3 $10,000 PV FV = $13,310
Present Value of Single Amount Known amount of single payment in future Present Value Discount 34
Present Value of a Single Amount Example If you will receive $10,000 in three years, what is it worth today (assuming you could invest at 10% compound interest)? Present Value? $ 10,000 Yr. 1 Yr. 2 Yr. 3 Discount @ 10%
Present Value of a Single Amount Example - Using Formulas -n PV = payment x (1 + i) -3 = $10,000 x (1.10) = $7,513
PV ?? FV=$10,000 Present Value of a Single Amount Example - Using Tables PV = Future Value x PV Factor = $ 10,000 X (3 periods @ 10%) Yr. 1 Yr. 2 Yr. 3
Present Value of $1 (n) 2% 4% 6% 8% 10% 1 .9804 .9615 .9434 .9259 .9090 2 .9612 .9246 .8900 .8573 .8265 3 .9423 .8890 .8396 .7938 .7513 4 .9238 .8548 .7921 .7350 .6830 5 .9057 .8219 .7473 .6806 .6209
Present Value of a Single Amount Example - Using Tables PV = Future Value x PV Factor = $ 10,000 X (3 periods @ 10%) = $ 10,000 X .7513 = $ 7,513 Yr. 1 Yr. 2 Yr. 3 PV = $7,513 FV=$10,000
Future Value of an Annuity Periods 1 2 3 4 $0 $3,000 $3,000 $3,000 $3,000 +Interest Future Value?
Future Value of Annuity Example If we invest $3,000 each year for four years at 10% compound interest, what will it be worth 4 years from now? Yr. 1 Yr. 2 Yr. 3 Yr. 4 $0 $3,000 $3,000 $3,000 $3,000 FV ??
Future Value of Annuity Example FV = Payment x FV Factor = $ 3,000 x (4 periods @ 10%) Yr. 1 Yr. 2 Yr. 3 Yr. 4 $0 $3,000 $3,000 $3,000 $3,000 FV ??
Future Value of Annuity of $1 (n) 2% 4% 6% 8% 10% 12% 1 1.000 1.000 1.000 1.000 1.000 1.000 2 2.020 2.040 2.060 2.080 2.100 2.120 3 3.060 3.122 3.184 3.246 3.3103.374 4 4.122 4.246 4.375 4.506 4.641 4.779 5 5.204 5.416 5.637 5.867 6.105 6.353
Yr. 1 Yr. 2 Yr. 3 Yr. 4 $0 $3,000 $3,000 $3,000 $3,000 Future Value of Annuity Example FV = Payment x FV Factor = $ 3,000 x (4 periods @ 10%) = $ 3,000 x 4.641 = $ 13,923 FV = $13,923
Periods 1 2 3 4 $0 $500 $500 $500 $500 Discount Present Value ? Present Value of an Annuity
Yr. 1 Yr. 2 Yr. 3 Yr. 4 $0 $4,000 $4,000 $4,000 $4,000 Present Value of an Annuity Example What is the value today of receiving $4,000 at the end of the next 4 years, assuming you can invest at 10% compound annual interest? PV ??
Yr. 1 Yr. 2 Yr. 3 Yr. 4 $0 $4,000 $4,000 $4,000 $4,000 PV ?? Present Value of an Annuity Example PV = Payment x PV Factor = $ 500 x (4 periods @ 10%)
Present Value of Annuity of $1 (n) 2% 4% 6% 8% 10% 1 0.980 0.962 0.943 0.926 0.909 2 1.942 1.886 1.833 1.783 1.735 3 2.884 2.775 2.673 2.5772.487 4 3.808 3.630 3.465 3.312 3.170 5 4.713 4.452 4.212 3.992 3.791
Present Value of an Annuity Example PV = Payment x PV Factor = $ 4,000 x (4 periods @ 10%) = $ 4,000 x 3.170 = $ 12,680 Yr. 1 Yr. 2 Yr. 3 Yr. 4 $0 $4,000 $4,000 $4,000 $4,000 P.V. = $12,680
Solving for Unknowns Assume that you have just purchased a new car for $14,420. Your bank has offered you a 5-year loan, with annual payments of $4,000 due at the end of each year. What is the interest rate being charged on the loan?
Solving for Unknowns PV = Payment x PV factor PV factor = PV / Payment Yr. 1 Yr. 2 Yr. 3 Yr. 4 Yr. 5 discount discount discount discount discount PV = $14,420 rearrange equation to solve for unknown
Solving for Unknowns PV factor = PV / Payment = $14,420 / $4,000 = 3.605 Yr. 1 Yr. 2 Yr. 3 Yr. 4 Yr. 5 discount discount discount discount discount PV = $14,420
Present Value of an Annuity Table (n) 10% 11% 12% 15% 1 0.909 0.901 0.893 0.870 2 1.736 1.713 1.690 1.626 32.487 2.444 2.402 2.283 43.170 3.102 3.037 2.855 5 3.791 3.696 3.605 3.352 PV factor of 3.605 equates to an interest rate of 12%. 53