In: Finance
You are a small business owner considering two alternatives for your phone system.
Plan A | Plan B | |
Initial cost ($) | 50,000 | 120,000 |
Annual maintenance cost ($) | 9,000 | 6,000 |
Salvage value ($) | 10,000 | 20,000 |
Life | 20 years | 40 years |
The discount rate is 8%. Which alternative would you pick?
Plan A or Plan B
Calculation of EAC of Plan A
n = 20 years
r = discount rate = 8%
P = annual maintenance cost = -$9,000
NPV of the Plan A = [P * [1 - (1+r)^-n] / r] + [Salvage Value / (1+r)^n] - Initial Cost
= [-$9,000 * [1 - (1+8%)^-20] / 8%] + [$10,000 / (1+8%)^20] - $50,000
= [-$9,000 * 0.785451793 / 0.08] + [$10,000 /4.66095714 ] - $50,000
= -$88,363.3268 + $2,145.48208 - $50,000
= -$136,217.845
EAC of Plan A = [r*NPV] / [1 - (1+r)^-n]
= [8% * -$136,217.845] / [1 - (1+8%)^-20]
= -$10,879.4276 / 0.785451793
= -$13,851.1716
= -$13,851.17
Calculation of EAC of Plan B
n = 40 years
r = discount rate = 8%
P = annual maintenance cost = -$6,000
NPV of the Plan B = [P * [1 - (1+r)^-n] / r] + [Salvage Value / (1+r)^n] - Initial Cost
= [-$6,000 * [1 - (1+8%)^-40] / 8%] + [$20,000 / (1+8%)^40] - $120,000
= [-$6,000 * 0.953969067/ 0.08] + [$20,000 /21.7245215] - $120,000
= -$71,547.68 + $920.618666 - $120,000
= -$191,527.061
EAC of Plan B = [r*NPV] / [1 - (1+r)^-n]
= [8% * -$191,527.061] / [1 - (1+8%)^-40]
= -$15,322.1649 / 0.953969067
= -$16,061.4903
= -$16,061.49
EAC of Plan B is higher than Plan A hence it is better to choose Plan A