Learn how the simple rate of return measures gain relative to the initial investment and why it is useful for rough comparisons but limited over time.
The simple rate of return measures how much an investment gained relative to the amount originally invested, without adjusting for compounding or the timing of the cash flows.
It is one of the fastest ways to describe investment performance, but it is also one of the least nuanced.
If the result is multiplied by 100, it is expressed as a percentage.
The simple rate of return is meant to answer a direct question:
“How large was my gain or loss compared with what I put in?”
It can include:
Suppose you invest $1,000 in a stock.
By the end of the year:
$40 in dividends$1,090Your total gain is $130, so the simple rate of return is:
Despite its limitations, the simple rate of return is useful for:
It is especially helpful when the goal is clarity rather than precision.
The simple rate of return does not account for:
That means it can be misleading when you compare investments held over different lengths of time.
If one investment earns 12% over one year and another earns 12% over three years, the simple percentage looks the same, but the annual performance is not the same.
That is why annualized rate of return is usually better for multi-year comparisons.
Internal rate of return (IRR) is more sophisticated because it accounts for timing and cash-flow structure.
The simple rate of return does not. It is a rough measure, not a full discounted-cash-flow method.