Internal rate of return (IRR) is a technique that calculates the annualized rate of return of an investment or a project. IRR can help the business analyst to determine the estimated growth rate of potential solution options by comparing the present value of the expected cash inflows and outflows of each option. IRR can also help to select the option that has the highest rate of return and exceeds the minimum required rate of return or the cost of capital. References: = PMI Professional in Business Analysis (PMI-PBA)® Examination Content Outline (2019), page 11; Business Analysis for Practitioners: A Practice Guide (2015), page 66.