Opportunity Cost
Value of next best option.
What does Opportunity Cost mean?
Opportunity cost is the value of the next best alternative you forgo when making a decision. Every choice has a trade-off — when you invest money, time, or resources in one option, you lose the potential benefit of the alternative. Understanding opportunity cost helps you make more informed decisions by quantifying what you give up.
How to calculate Opportunity Cost
Opportunity cost is calculated with the formula: Opportunity Cost = Return of Best Alternative − Return of Chosen Option. For example, if you invest in Option A expecting $10,000 in returns, but Option B would have earned $15,000, the opportunity cost is $15,000 − $10,000 = $5,000. A positive opportunity cost means the alternative would have been more profitable.
FAQ
Opportunity cost is what you give up when you choose one option over another. If you spend $1,000 on a vacation instead of investing it, the opportunity cost is the potential investment return you missed. It applies to money, time, and any other limited resource.
Yes. A negative opportunity cost means your chosen option actually outperforms the alternative — you made the better choice. For example, if your investment earns $15,000 and the alternative would have earned only $10,000, the opportunity cost is −$5,000, confirming your decision was sound.
Opportunity cost is forward-looking — it compares the potential benefits of alternatives you haven't chosen yet. Sunk cost is backward-looking — it refers to money already spent that cannot be recovered. Good decision-making considers opportunity cost but ignores sunk costs.
Investors face countless choices: stocks vs. bonds, real estate vs. index funds, saving vs. spending. Calculating opportunity cost helps compare these options objectively. It ensures you're not just earning a return, but earning the best possible return given your alternatives and risk tolerance.
No. Opportunity cost applies to any scarce resource — time, energy, attention, or even physical space. For example, spending an evening studying has an opportunity cost of the leisure activities you could have enjoyed instead. The concept is universal in economics and everyday decision-making.
Related calculators
- ROI— Return relative to investment cost.
- NPV— Net present value of future cash flows.
- Break-Even— Point where revenue equals cost.
- CAGR— Average annual growth rate.