HomeFinance & EconomicsAccountingWhat is Return on Investment (ROI)?
Finance & Economics·2 min·Updated Mar 11, 2026

What is Return on Investment (ROI)?

Return on Investment

Quick Answer

Return on Investment (ROI) is a financial metric used to evaluate the profitability of an investment. It measures the gain or loss generated relative to the amount invested, expressed as a percentage.

Overview

Return on Investment (ROI) is a key concept in finance and accounting that helps individuals and businesses assess the effectiveness of their investments. It is calculated by taking the net profit from an investment, dividing it by the initial cost of the investment, and then multiplying by 100 to get a percentage. This simple formula allows investors to quickly understand how much they are earning relative to what they put in. For example, if a company invests $1,000 in a marketing campaign and earns $1,500 in additional sales as a result, the ROI would be calculated as follows: ($1,500 - $1,000) / $1,000 * 100, resulting in a 50% ROI. This means the company made a profit of 50% on its marketing investment. Understanding ROI is crucial in accounting as it aids in making informed financial decisions and prioritizing investments that yield the highest returns. ROI matters because it provides a straightforward way to compare different investment opportunities. Investors can use ROI to determine which projects or assets are worth pursuing based on their potential profitability. In the world of accounting, tracking ROI helps businesses allocate resources efficiently and measure the success of their financial strategies.


Frequently Asked Questions

ROI is calculated by subtracting the initial investment cost from the final value of the investment, dividing that number by the initial investment cost, and then multiplying by 100 to get a percentage. This formula helps investors see how much profit they made relative to what they spent.
A negative ROI indicates that an investment has lost money rather than gained it. This means the costs of the investment were greater than the returns, signaling that the investment was not successful.
ROI is important for businesses because it helps them evaluate the efficiency of their investments and make informed decisions about where to allocate resources. By understanding which investments yield the highest returns, companies can focus on strategies that enhance profitability.