Revenue COGS Gross Margin Tax Due Net Working Capital Machine Purchase/Sale Gains from Sale Tax on Gains Opportunity Cost Repair/ Maintenance Cost Net Cash Flow Tax Calculation: Gross Margin Depreciation Rate Depreciation Taxable Income Tax Rate Tax Due Year 0 Year 1 10.00 0.40 Year 2 18.00 0.40 Year 3 14.40 0.40 Year 4 11.52 0.40 Year 5 9.22 0.40 Year 6 7.37 0.40