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Return on Investment (ROI)

Return on investment (ROI) is a financial metric that measures the percentage gain or loss generated by an investment relative to its cost, calculated as (Net Profit / Cost of Investment) x 100.

Explanation

ROI is one of the simplest and most widely used financial metrics for evaluating projects. It tells stakeholders how much return they receive for each dollar invested. For example, an ROI of 150% means the project returns $1.50 for every $1.00 invested.

ROI is popular because it is easy to calculate and understand. However, it has limitations: the basic formula does not account for the time value of money, the duration of the investment, or the risk profile of the project. Two projects could have the same ROI, but one delivers returns in one year while the other takes five. For this reason, ROI is often used alongside time-adjusted metrics like NPV and IRR.

On the exam, higher ROI is better, and you should recognize ROI as a benefit measurement method used in project selection. Questions may compare ROI across projects or ask about its limitations compared to NPV.

Key Points

  • Calculated as (Net Profit / Cost of Investment) x 100
  • Higher ROI percentage is preferred
  • Simple but does not account for time value of money
  • Often used alongside NPV and IRR for more complete analysis

Exam Tip

Higher ROI is better. But remember that ROI alone does not account for the time value of money—NPV is the more comprehensive measure.

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