Estimating After-Tax Incremental cash flows Principles that must be adhered to in the estimation 区 lgnore sunk costs z Include opportunity costs a Include project-driven changes in working capital net of spontaneous changes in current liabilities a Include erects of ination 12-912-9 Estimating After-Tax Incremental Cash Flows  Ignore sunk costs  Include opportunity costs  Include project-driven changes in working capital net of spontaneous changes in current liabilities  Include effects of inflation Principles that must be adhered to in the estimation