Chapter 1

Opportunity Cost

Opportunity cost is the next best alternative given up when a choice is made, and it applies to consumers, firms and governments.

Defining opportunity cost

Because resources are scarce, choosing one thing means giving up another. Opportunity cost is the next best alternative that is given up when a choice is made. It is not the money spent, but the best option that was sacrificed.

Key idea

Opportunity cost = the value of the next best alternative forgone. Only the single best sacrificed option counts, not every option given up.

Who faces opportunity cost?

Opportunity cost affects all decision makers:

  • Consumers choose between goods with a limited income.
  • Producers choose which goods to make with limited resources.
  • Governments choose how to spend a limited budget.

Example

A government uses funds to build a new hospital instead of a new school. The opportunity cost of the hospital is the school that could have been built.

Why it matters

Thinking about opportunity cost helps people make better decisions. A choice is worthwhile only if the benefit gained is greater than the opportunity cost. Ignoring opportunity cost can lead to resources being used in ways that are not the most valuable to society.

Remember

  • Opportunity cost is the next best alternative, not all alternatives.
  • It arises directly from scarcity and choice.
  • It applies to consumers, producers and governments.

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