What is ROI?

ROI, or Return on Investment, is one of the most fundamental financial metrics used to assess investment effectiveness. It represents return on investment and is expressed as a percentage, allowing for easy comparison of the effectiveness of various investments, regardless of their scale. ROI is widely used in various business areas, from marketing analysis to assessing the profitability of investment projects.

How to calculate ROI?

The ROI formula is simple and effective. To calculate ROI, you need to:

Subtract the total investment costs from the revenues (income) earned from that investment.

Then divide the result by the total investment costs.

Multiply the result by 100 to get the percentage.

Mathematically, the formula looks like this:

ROI=[(Revenue−Costs)/Costs]×100%

ROI calculation example

Let's assume that a company spent PLN 20 on an advertising campaign and thanks to this campaign it generates revenues of PLN 30. To calculate ROI:

Revenues minus costs: 30-20 PLN =10 PLN

Divide the difference by the investment costs: PLN 10/PLN 20=0.5

Multiply by 100 to get the percentage: 0.5×100%=50%

So the ROI is 50%, which means that for every złoty spent on the campaign, the company earned an additional 50 groszy.

What gives ROI?

Efficiency assessment: ROI allows you to assess how effectively a company is using its resources. This is crucial for optimizing marketing efforts, capital investments, and other business projects.

Decision making: A high ROI can indicate a successful investment, while a low ROI can be a signal that the strategy needs to be changed or optimized.

Investment comparison: ROI enables comparison of different investments in terms of their profitability, which is essential when allocating capital.

ROI Limitations

While ROI is an extremely useful tool, it also has certain limitations. It doesn't take into account the project's duration (an investment that pays for itself within a month may be more attractive than one that pays for itself within a year) or the risk involved. Furthermore, in the case of long-term investments, it may not account for changing market conditions.