Opportunity Cost
Cost of foregoing the next best alternative
Net initial Outflow
Step 1: Invoice + shipping + installation
+ increase in Working Capital
- any cash proceeds on the sale of the old asset net of tax
= Net initial outflow
Tax on sale of asset
NPV
Profitability index
= PVFCF / initial outflow
IRR
Payback period method
Net initial investment / increase in net annual net after-tax cash flow
Discounted payback period method