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Project evaluation processes: Payback, NPV, PI, and IRR

Describe the following project evaluation processes: Payback, NPV, PI, and IRR. Is any one-evaluation process better the others? Why?

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The investment decisions of a firm are generally known as the capital budgeting, or capital expenditure decisions. The firm's investment decisions would generally include expansion, acquisition, modernization and replacement of the long-term assets. Sale of a division or business (divestment) is also as an investment decision.
Decisions like the change in the methods of sales distribution, or an advertisement campaign or research and development programs have long-term implications for the firm's expenditures and benefits, and therefore, they should also be evaluated as investment decisions. Several different procedures are available to analyze potential business investments. Some concepts are better than others when it comes to reliability but all provide enough information to get the general scope of the investment. The five procedures that provide useful information are the Net present Value (NPV), the Payback Rule, the Average Accounting Return (AAR), the Internal Rate of Return (IRR), and the Profitability Index (PI). These procedures will help rank the projects from the greatest investment to the worst.
First, the most important concept of evaluating these investments is the NPV. NPV is defined as the difference between an investment's market value and its cost. It is only a good investment if it makes money for the company so a positive NPV will be needed. The projects ...

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This discuss the concepts such as project evaluation processes: Payback, NPV, PI, and IRR