the dauten toy corporation currently uses an

Question

The Dauten Toy Corporation currently uses an injection molding machine that was purchased 2 years ago.  This machine is being depreciated on a straight-line basis, and it has 6 years of remaining life.  Its current book value is $2,100, and it can be sold for $2,500 at this time. Thus, the annual depreciation expense is $2,100/6 = $350 per year.  If the old machine is not replaced, it can be sold for $500 at the end of its useful  life.

 Dauten is offered a replacement machine which has a cost of $8,000, an estimated useful life of 6 years, and an estimated salvage value of $800. This machine falls into the MACRS 5-year class so the applicable depreciation rates are 20%, 32%, 19%, 12%, 11%, and 6%. the replacement machine would permit an output expansion, so sales would rise by $1,000 per  year; even so, the new machine's much greater efficiency would cause operating expenses to decline by $1,500 per year. the new machine would require that inventories be increased by $2,000, but accounts payable would simultaneously increase by $500. Dauten's marginal federal-plus-state tax rate is 40%, and its WACC is 15%. Should it replace the old machine?

Here we have the calculation to find the solution.

Net cash flow at t = 0:
Purchase price
Sale of old machine
Tax on sale of old machine
Change in net working capital
Total investment
Annual cash inflows:
Sales increase
Cost decrease
Pre-tax revenue increase
Tax benefit
After-tax revenue increase
Depreciation:
			Year 1	Year 2	Year 3	Year 4
New
Old
Change
Depreciation tax savings
Calculate NPV:
			Year 0	Year 1	Year 2	Year 3	Year 4	Year 5	Year 6
Net investment
After-tax revenue increase
Depreciation tax savings
Working capital recovery
Salvage value of new machine
Tax on salvage value
Opportunity cost of old machine
Project cash flows
NPV =
Replace old machine (Yes/No)?