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ROI is not profit; it is the sum of all the investment

Author : Renold Dass | Published On : 16 Apr 2026

 

What is the first definition to pop into our minds when we hear the acronym ROI? What we are talking about is not the same. While the Rate of Interest is the fee you pay for availing a loan, the ROI here is Return On Investment, which is the profit generated by an investment. If you buy shares for $15,000, sell it for $40,000, and get $28,000 back after all the custom deductions; your ROI is 86.67%. The formula is simple. It consists of five steps:

 

  1. Identify the total investment
    Add up all co
  2. sts related to the investment.
  3. Measure the total return
    Determine the revenue, savings, or profit generated.
  4. Find the net gain
    Subtract the total investment from the total return.
  5. Apply the ROI formula
    ROI = (Net Gain ÷ Total Investment) × 100
  6. Interpret the result

 

The percentage shows how much return was earned compared with what was invested.

ROI = 28,000 - 15,000/15,000 x 100 = 86.67%

So, your net profit is $13,000, and the ROI is 86.67%.

 

 

Of course, while the basic formula is simple, it becomes incredibly complicated when it comes to business. The formula is simple; the inputs, though, are far from simple. For large businesses, it is often hard to know exactly how much profit an investment created and how much the full investment really costs. A company may spend money not just on buying something, but also on training, setup, maintenance, integration, subscriptions, and staff time. It can also be difficult to link results to one single investment, because growth may come from many things happening at the same time, such as new software, better training, pricing changes, or stronger demand in the market. Another issue is time. Money earned quickly is usually more valuable than money earned years later.  Therefore, big companies often use other methods like NPV, IRR, and payback periods to judge returns more accurately. Risk also matters, because an investment with high returns may still be a bad choice if it is very risky. On top of that, some benefits do not show up as direct profit right away, such as lower customer churn, better compliance, lower security risk, or improved customer loyalty. So, while the ROI formula itself is easy, using it properly in a big business is much more complicated because the real costs, benefits, timing, and risks are harder to measure. In such a situation, merely applying the formula is not enough. We need specialized ROI tools.

 

These ROI tools are software used to estimate, calculate, and present the return on an investment. They help businesses compare costs against expected benefits like revenue growth, cost savings, efficiency gains, or risk reduction. They can be as simple as ROI calculators, such as the one offered by the QKS Group,  and spreadsheets, or more advanced tools that model NPV, IRR, payback period, scenario analysis, and business case projections. So, while profit is good, what kind of ROI is considered good, especially from the sales angle? There is no single “good” ROI from a sales angle, because it depends on margin, deal size, and sales cycle. But here are some rough estimates:

 

  • 0–10% ROI: usually weak
  • 10–20% ROI: acceptable
  • 20%+ ROI: generally good
  • 50%+ ROI: very strong

In sales, teams also often judge ROI by how fast the investment pays back and whether it drives profitable revenue, not just top-line sales.

 

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