# Are my calculations for PV, NPV, and rate of return right?

## Is net present value the same as rate of return?

**Net present value (NPV) is the difference between the present value of cash inflows and the present value of cash outflows over a period of time**. By contrast, the internal rate of return (IRR) is a calculation used to estimate the profitability of potential investments.

## How do you calculate NPV with required rate of return?

**What is the formula for net present value?**

- NPV = Cash flow / (1 + i)^t – initial investment.
- NPV = Today’s value of the expected cash flows − Today’s value of invested cash.
- ROI = (Total benefits – total costs) / total costs.

## Is net present value accurate?

While net present value (NPV) calculations are useful when evaluating investment opportunities, **the process is by no means perfect**. NPV is a useful starting point but it’s not a definitive metric that an investor should rely on for all investment decisions as there are some disadvantages to using the NPV calculation.

## Is NPV or IRR more accurate?

IRR is useful when comparing multiple projects against each other or in situations where it is difficult to determine a discount rate. **NPV is better in situations where there are varying directions of cash flow over time or multiple discount rates**.

## Under what circumstances NPV and IRR differ?

Comparison Chart

Basis for Comparison | NPV | IRR |
---|---|---|

Decision Making | It makes decision making easy. | It does not help in decision making |

Rate for reinvestment of intermediate cash flows | Cost of capital rate | Internal rate of return |

Variation in the cash outflow timing | Will not affect NPV | Will show negative or multiple IRR |

## Why do IRR and NPV differ?

Comparing NPV and IRR

**The NPV method results in a dollar value that a project will produce, while IRR generates the percentage return that the project is expected to create**. Purpose. The NPV method focuses on project surpluses, while IRR is focused on the breakeven cash flow level of a project.

## How do you calculate IRR and NPV?

**How to calculate IRR**

- Choose your initial investment.
- Identify your expected cash inflow.
- Decide on a time period.
- Set NPV to 0.
- Fill in the formula.
- Use software to solve the equation.

## How do you calculate rate of return?

ROI is calculated by subtracting the initial value of the investment from the final value of the investment (which equals the net return), then dividing this new number (the net return) by the cost of the investment, and, finally, multiplying it by 100.

## What are the assumptions of net present value method?

The net present value method is based on two assumptions. These are: The cash generated by a project is immediately reinvested to generate a return at a rate that is equal to the discount rate used in present value analysis. The inflow and outflow of cash other than initial investment occur at the end of each period.

## Do NPV and IRR always agree?

Whenever an NPV and IRR conflict arises, **always accept the project with higher NPV**. It is because IRR inherently assumes that any cash flows can be reinvested at the internal rate of return.

## Why is the NPV method considered more reliable?

Net present value uses discounted cash flows in the analysis, which makes the net present value more precise than of any of the capital budgeting methods as **it considers both the risk and time variables**.

## What is the major disadvantage to NPV and IRR?

Disadvantages. **It might not give you accurate decision when the two or more projects are of unequal life**. It will not give clarity on how long a project or investment will generate positive NPV due to simple calculation.

## Under what circumstances to the Net Present Value and Internal Rate of Return method differ Which method would you prefer and why?

NPV is a better tool for making decisions about new investments because it provides a dollar return. IRR is less useful when making investment choices as its results do not provide information about the amount of money a project will likely generate.