What is Return on Investment (ROI)?
Return on Investment (ROI) is a simple and universal financial metric used to evaluate the efficiency and profitability of an investment. It measures the amount of return on a particular investment relative to its initial cost. ROI is widely used in stock market investing, real estate, marketing campaigns, and evaluating business expansions.
Because ROI is expressed as a percentage, it makes it incredibly easy to compare the effectiveness of different investments. For example, knowing you made a $5,000 profit is good, but making $5,000 on a $10,000 investment (50% ROI) is vastly superior to making $5,000 on a $100,000 investment (5% ROI).
The Basic ROI Formula
Calculating your basic Return on Investment requires only two numbers: your initial cost, and your final return.
Why Annualized ROI is Crucial
The standard ROI formula has one major flaw: it ignores time. If an investment gives you a 100% ROI, that sounds incredible. However, if it took 50 years to achieve that 100% return, it is actually a very poor investment.
This is where Annualized ROI comes in. It standardizes your return to show you what your average growth rate was per year. By entering your "Investment Length" in the calculator above, we use the Compound Annual Growth Rate (CAGR) formula to give you your true yearly return.
Frequently Asked Questions (FAQ)
1. Can ROI be negative?
Yes. If your Amount Returned is less than your Amount Invested, your ROI will be a negative percentage. This indicates a financial loss. For example, if you invest $1,000 and sell it for $800, your ROI is -20%.
2. What is a "good" ROI?
A "good" ROI depends entirely on your risk tolerance and the type of investment. Historically, the S&P 500 (the general US stock market) returns an annualized ROI of about 7% to 10% after adjusting for inflation. Any investment offering significantly higher returns than this generally carries a much higher risk of loss.
3. Does this calculate my after-tax return?
No. This calculator provides your gross ROI. In the real world, you will likely need to pay short-term or long-term capital gains taxes on your net profit when you sell an asset. You should consult a tax professional to calculate your true "after-tax" ROI.