8.4 Chapter Summary
Key Concepts
- 8.1 Net Present Value
- The characteristics of making decisions including decision types, monetary sources, and interest rates.
- Making decisions through net present value.
- 8.2 Internal Rate of Return
- Using internal rate of return to choose whether to pursue one course of action.
Glossary of Terms
- Cash Flow. A movement of money into or out of a particular project.
- Cost of Capital. A weighted average of all of the debt and equity financing rates used to provide needed funds for a project.
- Internal Rate of Return (IRR). The annual rate of return on the investment being made such that the net present value of all cash flows in a particular project equals zero.
- Net Present Value (NPV). The difference in today’s dollars between all benefits and costs for any given project.
Formulas
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Symbols Used
- [latex]NPV[/latex] = net present value
- [latex]IRR[/latex] = internal rate of return
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Formulas Used
- Net Present Value: [latex]NPV = \mbox{(Sum of PV of All Future Cash Flows)} − \mbox{(Initial Investment)}[/latex] or [latex]NPV = \mbox{(Sum of PV of Cash Inflows)} − \mbox{(Sum of PV of Cash Outflows)}[/latex]
Calculator
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Cash Flow Worksheet
- Access the cash flow function by pressing CF on the keypad.
- Always clear the memory using 2nd CLR WORK so that any previously entered data is deleted.
- Use the up arrow and down arrow to scroll through the various lines.
- Strictly adhere to the cash flow sign convention when using this function and press ENTER after keying in the data.
- To exit the window, press 2nd QUIT.
- The various lines are summarized below:
- CFo = any cash flow today.
- CXX = a particular cash flow, where XX is one of a series of cash flow numbers starting with 01. You must key in cash flows in order from the first time segment to the last. You cannot skip a time segment, even if it has a value of zero, because each time segment is a placeholder on the timeline.
- FXX = the frequency of a particular cash flow, where XX is the cash flow number. It is how many times in a row the corresponding cash flow amount occurs. This allows you to enter recurring amounts together instead of keying them in separately. By default, the calculator sets this variable to 1.
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Net Present Value
- Use this function after you have entered all cash flows.
- Press NPV on the keypad to access the function.
- Use the up arrow and down arrow to scroll through the window.
- To exit the window, press 2nd QUIT.
- This window has two lines:
- I = the matching periodic interest rate for the interval of each time segment.
- NPV = the net present value. Press CPT to calculate this amount.
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Internal Rate of Return
- Use this function after you have entered all cash flows.
- Press IRR on the keypad to access the function.
- Press CPT button to perform the calculation. The output is in percent format.
- To exit the window, press 2nd QUIT.
Cash Flows 1: Net Present Value (NPV) and IRR Calculations by Joshua Emmanuel [2:52] (transcript available).
Attribution
“Chapter 15 Summary” from Business Math: A Step-by-Step Handbook (2021B) by J. Olivier and Lyryx Learning Inc. through a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License unless otherwise noted.