Suppose we are thinking about replacing an old computer with a new one. The old one cost us $1,300,000; the new one will cost, $1,560,000. The new machine will be depreciated straight-line to zero over its five-year life. It will probably be worth about $300,000 after five years.
The old computer is being depreciated at a rate of $260,000 per year. It will be completely written off in three years. If we don't replace it now, we will have to replace it in two years. We can sell it now for $420,000; in two years, it will probably be worth $120,000. The new machine will save us $290,000 per year in operating costs. The tax rate is 38 percent, and the discount rate is 12 percent.
We will use the equivalent cost method. This method is used to determine the best option under mutually exclusive condition for available alternatives having different lives.
EAC = NPV/Annuity factor
Now, to determine whether or not to replace the old computer now without worrying about what is going to happen in the next 2 years we will compute the NPV of the differentials.
Discount rate | 12% | ||
New Machine | Old Machine | ||
Life | 5 | 3 | |
OCF | $ 2,98,360 | $ 98,800 | |
After-tax salvage | $ 1,86,000 | $ 1,73,200 | |
Initial Cost of New machine | $ 15,60,000 | ||
Opportunity cost of old machine | $ 5,56,800 | ||
Value | |||
Year | New Machine | Old Machine | Difference |
0 | $ -15,60,000 | $ -5,56,800 | $ -10,03,200 |
1 | $ 2,98,360 | $ 98,800 | $ 1,99,560 |
2 | $ 2,98,360 | $ 2,72,000 | $ 26,360 |
3 | $ 2,98,360 | $ 2,98,360 | |
4 | $ 2,98,360 | $ 2,98,360 | |
5 | $ 4,84,360 | $ 4,84,360 | |
NPV | $ -1,27,188.60 | ||
The machine should Be replaced today |
Formulae used:
Suppose we are thinking about replacing an old computer with a new one. The old one...
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