EuroCalc

Qu'est-ce que le/la Retour sur investissement (ROI) ?

Le ROI mesure le gain ou la perte généré par un investissement par rapport à son coût, généralement exprimé en pourcentage du montant investi.

ROI is the most widely used yardstick for comparing investment opportunities — projects, marketing campaigns, equipment purchases, acquisitions. Its strength is simplicity; its weakness is that it ignores the time value of money and the investment horizon.

For multi-year projects, annualised ROI, net present value (NPV) or internal rate of return (IRR) give a more accurate view. A high ROI over five years may be inferior to a lower ROI achieved in six months.

Formule
ROI = (Gain − Cost) ÷ Cost
Exemple

A marketing campaign costs CHF 50,000 and generates CHF 80,000 of attributed profit — ROI is (80,000 − 50,000) ÷ 50,000 = 60%.

Termes liés

Questions fréquentes

What is a good ROI?+

Depends on risk and alternatives; a stock-market average might be 7–10% real, so projects should usually clear that hurdle.

Is ROI the same as profit margin?+

No. Margin is profit ÷ revenue; ROI is profit ÷ amount invested.

What are the limits of ROI?+

It ignores time, risk and capital structure — use NPV or IRR for major decisions.