Kalkulator ROI
The detailed guide below is currently available in English.
Simple vs. annualized ROI
Simple ROI = (Final Value − Cost) ÷ Cost. It treats a 50% gain the same whether it took one year or twenty. The annualized rate fixes that by asking what constant yearly return compounds to the same multiple: (Final ÷ Cost)1/years − 1. Turning $1,000 into $1,500 in two years is 50% simple, but only about 22.5% per year.
Częste pytania
Should costs like fees go into the invested amount?
Yes. ROI is only comparable across investments when the full outlay is counted — brokerage commissions, renovation costs on a flip, or sales loads all belong in the cost figure, not subtracted from memory later.
What if I lost money?
ROI comes out negative and the annualized rate will be too. Note that annualized losses compound as well: a 50% loss in one year needs a 100% gain the next year just to get back to even.