Generally, any positive roi is considered a good return. This means that the total cost of the investment was recouped in addition to some profits left over. Webreturn on investment, or roi, is a commonly used profitability ratio that measures the amount of return, or profit, an investment generates relative to its costs. Webreturn on investment is a simple ratio that divides the net profit (or loss) from an investment by its cost. Because it is expressed as a percentage, you can. Web• a good return on investment is generally considered to be around 7% per year, based on the average historic return of the s&p 500 index, adjusted for inflation. Webfree return on investment (roi) calculator that returns total roi rate and annualized roi using either actual dates of investment or simply investment length. However, a strong general roi is something greater. Weban roi (return on investment) of 30% means that the profit or gain from an investment is 30%. For example, if the investment cost is $100, the return from. Webroi is a ratio that determines how effective your investment is in generating income. Here are the pros and cons of calculating roi for your small business. Weba good place to start is looking at the past decade of returns on some of the most common investments: Average annual return on stocks: