Opportunity Cost
The value of the next-best option you give up when you make a financial choice.
Definition
Every use of money rules out other uses. Opportunity cost asks what you are giving up — not just what you are paying. It helps compare choices like paying down debt versus saving, or locking cash into a house deposit versus keeping it accessible.
Examples
• Using 20,000 for a larger house deposit lowers mortgage costs but reduces cash available for emergencies. • Spending 100 a month on subscriptions means 1,200 a year not going to a goal. • Holding cash in a low-interest account while carrying 22% card debt has a high opportunity cost.
Beyond money
Opportunity cost includes time, flexibility and stress. Liquidity — having cash available — has real value.
Using it in decisions
List the main alternatives, estimate what each provides, and compare. The cheapest option is not always the best value.
Common pitfalls
Ignoring small recurring costs, and forgetting that keeping money accessible has value of its own.
Also Known As
Trade-off cost · Alternative cost
Key Takeaways
- Every choice gives something up.
- Liquidity and flexibility have value.
- Compare alternatives, not just prices.
Frequently Asked Questions
No — it applies to any choice about money, time or effort.
Compare the outcome of your choice with the best alternative you did not choose.
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