Warmack Machine Shop is considering a four-year project to improve its production efficiency. Buying a new machine press for $480,000 is estimated to result in $195,000 in annual pretax cost savings. The press falls in the MACRS five-year class, and it will have a salvage value at the end of the project of $81,000. The press also requires an initial investment in spare parts inventory of $21,000, along with an additional $2,600 in inventory for each succeeding year of the project. The shop’s tax rate is 30 percent and its discount rate is 8 percent. MACRS schedule : 1st year = 20% 2nd year =32% 3rd year = 19.2% 4th year = 11.52% 5th year = 5.76%