6. Understanding the NPV profile If projects are mutually exclusive, only one project can be chosen. The internal rate of return (IRR) and the net present value (NPV) methods will not always choose the same project. If the crossover rate on the NPV profile is below the horizontal axis, the methods will agree Projects Y and Z are mutually exclusive projects. Their cash flows and NPV profiles are shown as follows NPV (Dollars) Year Project Y Project Z 0 -$1,500-$1,500 $900 $600 $300 $200 800 $200 $400 $600 $1,000 600 Project Y 400 4 Project Z 200 If the weighted average cost of capital (WACC) for each project is 10%, do the NPV and IRR methods agree or conflict? 200 0 2 4 6 8 10 12 14 16 18 20 The methods conflict. O The methods agree COST OF CAPITAL (Percent A key to resolving this conflict is the assumed reinvestment rate. The NPV calculation implicitly assumes that intermediate cash flows are reinvested at the assumes that the rate at which cash flows can be reinvested is the , and the IRR calculation As a result, when evaluating mutually exclusive projects, the is usually the better decision criterion