Chapter 13 Principles of Finance 6e
Besley/Brigham
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times the MACRS percentage allowances of 0.20, 0.32, 0.19, 0.12, 0.11, and 0.06 in Years 1–6,
respectively.
b Depreciation tax savings = T(Depreciation) = 0.4(Depreciation).
Now recognize that at the end of Year 6 Dauten would recover its net working capital
investment of $1,500, and it would also receive $800 from the sale of the replacement machine.
However, because the machine would be fully depreciated, the firm must pay 0.40($800) =
$320 in taxes on the sale. Also, by undertaking the replacement now, the firm forgoes the right
to sell the old machine for $500 in Year 6; thus, this $500 in Year 6 must be considered an
opportunity cost in that year. No tax would be due because the $500 salvage value would equal
the old machine’s Year 6 book value.
Finally, place all the cash flows on a time line:
0 1 2 3 4 5 6
Net investment (6,660)
After-tax revenue increase 1,500 1,500 1,500 1,500 1,500 1,500
13-27 a. Old depreciation = ($70,000 – $10,000)/6 = $10,000 per year.
Current book value = $70,000 – 2($10,000) = $50,000.