Opportunity Cost
The potential benefit that is lost when you choose one alternative over another.
Opportunity Cost is an economics and finance concept representing the potential benefits that an individual, investor, or business misses out on when choosing one alternative over another.
Because every resource (time, money, labor) is finite, every decision inherently requires giving up something else. Opportunity cost mathematically quantifies exactly what you gave up.
The Formula
While often conceptual, it can be calculated mathematically as:
Opportunity Cost = Return of Most Lucrative Option Not Chosen - Return of Chosen Option
Example
Suppose you have $50,000. You have two options:
- Option A: Buy a luxury car for $50,000. The car depreciates and generates $0 in return.
- Option B: Invest the $50,000 in an index fund returning 10% annually. In one year, it generates $5,000 in profit.
If you choose Option A (the car), the true cost of the car is not just the $50,000 purchase price. The Opportunity Cost is the $5,000 in investment profit you gave up by not choosing Option B. Therefore, the actual economic cost of your decision is $55,000 in the first year alone. Understanding opportunity cost is essential for optimal capital allocation.