Total return and the annualised figure that matters
Total return and the annualised figure that matters
Return on investment expresses your gain as a percentage of what you put in. Enter the amount invested, what it is worth now, how long you held it, and any fees or transaction costs. The calculator returns both simple ROI and the annualised return.
ROI = (Net Gain ÷ Cost of Investment) × 100
Net gain is the final value minus the original cost minus fees. A $10,000 investment now worth $14,500 with $150 of fees produced a net gain of $4,350, so ROI = 4,350 ÷ 10,000 = 43.5%.
Simple ROI ignores time, which makes it almost useless for comparison. A 43.5% return is excellent over three years and disappointing over fifteen. The annualised figure — the compound annual growth rate — puts every investment on the same footing:
CAGR = (Final ÷ Initial)1/years − 1
That 43.5% over three years annualises to roughly 12.8% per year. Over ten years the same total return would be about 3.7% per year — a completely different investment. Whenever someone quotes a return without a time period attached, the number is not yet meaningful.
ROI is a useful summary and a poor complete picture. Four things it does not capture:
ROI is only honest if the cost side is complete. For financial investments that means commissions, spreads, account fees, and fund expense ratios — the last of which is easy to miss because it is deducted quietly rather than billed. A 1% annual expense ratio on a portfolio held for twenty years consumes a substantial share of the final balance.
For property, the cost side includes purchase costs, stamp duty or transfer tax, legal fees, renovations, maintenance, insurance, property tax, periods without a tenant, and selling costs. Property returns quoted on purchase price alone routinely overstate the real result by a wide margin.
For a business investment, include your own time at a realistic rate. A project returning 20% that consumed six months of unpaid work has a very different profile once that labour is priced.
Useful benchmarks: broad stock market indices have historically returned somewhere around 7–10% annually over long periods before inflation, with substantial variation and multi-year losing stretches along the way. Government bonds return less with less volatility. Savings accounts return less again.
If your annualised return sits comfortably above those ranges, it is worth asking what risk produced it, because unusually high returns are usually payment for unusual risk rather than evidence of skill. And a single investment's ROI says little on its own — what matters is the return of your portfolio as a whole, including the positions that did not work.
It depends entirely on risk and time period. Broad stock market indices have historically averaged roughly 7-10% annually over long horizons before inflation. Judge any return against comparable alternatives with similar risk rather than against an absolute standard.
ROI is your total percentage gain regardless of how long it took. Annualised return, or CAGR, converts that into an equivalent yearly rate, which is the only fair way to compare investments held for different lengths of time.
Yes. Commissions, account fees, and fund expense ratios all reduce your actual return. Leaving them out produces a figure that flatters the investment and misleads any comparison.
No. ROI is a nominal figure. To get the real return, subtract the inflation rate over the same period. An 8% return during 5% inflation is a 3% real gain in purchasing power.