Generally, the higher the IRR, the better. However, a company may prefer a project with a lower IRR, as long as it still exceeds the cost of capital, because it has other intangible benefits, such as contributing to a bigger strategic plan or impeding competition.
ROI indicates total growth, start to finish, of an investment, while IRR identifies the annual growth rate. While the two numbers will be roughly the same over the course of one year, they will not be the same for longer periods.
How do you calculate ROI? There are multiple methods for calculating ROI. The most common is net income divided by the total cost of the investment, or ROI = Net income / Cost of investment x 100.
The 15% IRR over 5 years would produce $1.15 for each invested dollar, but as the interest compounds over a longer timespan, that $1.15 grows to a 2.0 equity multiple for a $2 return on each invested dollar. The investment with a lower IRR had a higher equity multiple, which means it created more wealth.
Using a simple calculation, investors would need to triple the value of their investment over 5 years in order to earn at 25% IRR. Therefore, if a $10 million equity investment is made, the investor would need to realize $30 million after five years in order to realize the target IRR of 25%.
IRR is the rate of interest that makes the sum of all cash flows zero, and is useful to compare one investment to another. In the above example, if we replace 8% with 13.92%, NPV will become zero, and that's your IRR. Therefore, IRR is defined as the discount rate at which the NPV of a project becomes zero.
The net present value rule is the idea that company managers and investors should only invest in projects or engage in transactions that have a positive net present value (NPV). They should avoid investing in projects that have a negative net present value. It is a logical outgrowth of net present value theory.
There are also cases where no IRR exists. For example, if all cash flows have the same sign (i.e., the project never turns a profit), then no discount rate will produce a zero NPV. When the cash flows change sign repeatedly, there could theoretically be as many IRR solutions as there are sign changes.
When comparing similar investments, a higher NPV is better than a lower one. When comparing investments of different amounts or over different periods, the size of the NPV is less important since NPV is expressed as a dollar amount and the more you invest or the longer, the higher the NPV is likely to be.
For unlevered deals, commercial real estate investors today are generally targeting IRR values of somewhere between about 6% and 11% for five to ten year hold periods, with lower-risk deals with a longer projected hold period on the lower end of that spectrum, and higher-risk deals with a shorter projected hold period ...Project CFA