Content · Glossary
ROI (Return on Investment): Measuring Your Actions' Returns
ROI, or Return on Investment, is one of the most fundamental and universally used financial metrics in business. It measures the efficiency and profitability of an investment, showing how much money the company has earned (or lost) relative to what was invested. ROI can be used to evaluate a wide range of actions, from a marketing campaign and the purchase of new equipment to the acquisition of another company. It is an essential tool for decision-making, as it allows for the comparison of the profitability of different investment opportunities and the allocation of the company's capital where it will yield the highest return.
The calculation of ROI is straightforward: ROI = (Net Profit from Investment - Cost of Investment) / Cost of Investment. The result is usually expressed as a percentage. For example, if a company invests R$ 10,000 in a Google Ads campaign and this campaign generates R$ 30,000 in new revenue, with a product cost of R$ 15,000, the net profit from the investment is R$ 15,000 (R$ 30,000 - R$ 15,000). The ROI would be (R$ 15,000 - R$ 10,000) / R$ 10,000 = 0.5, or 50%. This means that for every R$ 1 invested, the company got back R$ 1.50 (R$ 1 of a refund and R$ 0.50 of net profit).
Although the formula is simple, the challenge in calculating an accurate ROI lies in correctly measuring all the gains and costs associated with the investment. In the case of a marketing campaign, the cost is not just the amount paid to Google, but also the time of the team that managed the campaign. The gain, in turn, may not just be the immediate sale, but also the Lifetime Value (LTV) of the acquired customers. Despite these complexities, the effort to calculate ROI is immensely valuable. It moves the organization away from intuition-based decisions and closer to a data-driven culture and financial performance.
Example in the Entrepreneur's Routine:
The marketing manager of a wine e-commerce, "VinoClub," has a budget of R$ 20,000 for the next month and is unsure where to invest: in a campaign with a digital influencer or in Instagram ads. He decides to test and allocate R$ 10,000 to each action to measure the ROI of each channel.
Action 1: Campaign with Influencer
- Cost of Investment: R$ 10,000 (payment of the influencer's fee).
- Result: The influencer generated an exclusive discount coupon. Through it, VinoClub recorded R$ 40,000 in sales. The profit margin of these products is 50%, so the Gain from Investment was R$ 20,000.
- ROI Calculation: (R$ 20,000 - R$ 10,000) / R$ 10,000 = 1.0 or 100%.
Action 2: Instagram Ads
- Cost of Investment: R$ 10,000 (amount paid to the advertising platform).
- Result: The ads directed to the website and generated R$ 60,000 in sales. With the same margin of 50%, the Gain from Investment was R$ 30,000.
- ROI Calculation: (R$ 30,000 - R$ 10,000) / R$ 10,000 = 2.0 or 200%.
When comparing the results, the marketing manager has a clear, data-driven answer. Although the influencer campaign was positive (ROI of 100%), the Instagram ads were twice as efficient in turning the investment into profit (ROI of 200%). With this information, the following month, he can decide to allocate a larger portion of his budget to Instagram ads, optimizing the company's marketing budget to generate the maximum possible return. The ROI analysis allowed him to make an objective decision to maximize the company's financial results.