Why is IRR often more informative than ROI for startup investments?

• A. ROI is a measure of efficiency of capital over time.
• B. ROI measures profitability for a single period, while IRR considers multiple periods.
• C. ROI is the overall return; IRR accounts for the time value of money and cash flows; IRR is more informative.
• D. IRR always equals ROI.

Answer: (C)

The timing of cash flows and the time value of money are the key ideas. ROI simply measures profit as a percentage of the initial investment, but it aggregates over a period and ignores when payments come in or go out. In startups, money flows across multiple years with uneven cash inflows and outflows, so two projects can have the same ROI yet deliver those returns at very different times. IRR, by contrast, finds the discount rate that makes the net present value of all cash flows equal to zero, so it incorporates the exact timing of every cash flow. This provides an annualized rate of return that reflects how quickly capital is recovered and how the value accumulates over time, which is why IRR is often more informative for evaluating startup investments.