A trade-off is giving up one thing to get another, while opportunity cost is the value of the best alternative you give up.
Trade-off
Giving up one benefit to get another. It’s the situation of having to choose.
Opportunity cost
The value of the next best alternative you give up.
Difference
Trade-off: the choice. Opportunity cost: the measure of what you lose.
Example
Spending $100 on a concert means you can’t buy a $100 jacket. The jacket is the opportunity cost.
Use
Economists use opportunity cost to compare decisions.
Definitions with numbers
A trade-off is giving up one thing to get another, such as time for money. Opportunity cost is the value of the next-best alternative given up when a choice is made. If you spend 3 hours on a task that would have earned 90 USD elsewhere, the opportunity cost is 90 USD.
- Example: a student chooses to attend college, giving up a possible annual wage. If the wage would be 35,000 USD, the foregone earnings are part of the opportunity cost along with tuition.
- Production possibilities frontier graphs show trade-offs between two goods and the opportunity cost of producing more of one.
- Economists measure opportunity cost in the value of the best alternative, not all alternatives.
Using the concepts
A trade-off describes the choice among options, and opportunity cost measures what one specific choice costs. In business, they guide investment decisions and capital allocation. In personal finance, spending 500 USD on a gadget has an opportunity cost, such as investing the money. Adam Smith, David Ricardo and Frederic Bastiat developed key ideas related to cost and trade, and the term opportunity cost is credited to Friedrich von Wieser in 1914.
Definitions with numbers
A trade off is giving up one thing to get another. Opportunity cost is the value of the best alternative forgone. Example: spending 1,000 USD on a laptop rather than investing it at a 7 percent return means a 70 USD yearly opportunity cost.
Using the concepts
Opportunity cost helps compare choices with common units. Economists use production possibility frontiers to show trade offs.
Examples with numbers
Opportunity cost of attending college includes tuition and forgone wages. If a student could earn 35,000 USD a year but studies for four years, the forgone income is 140,000 USD. A trade off arises when choosing between two goods with a limited budget, such as 100 USD on dinner or a concert ticket.
Using the concepts
Economists use production possibility frontiers and marginal analysis. Businesses compare returns on projects, and the next best project is the opportunity cost. Government spending also faces trade offs: spending on defense or education. The idea was articulated by Friedrich von Wieser in 1914.
Based on data from the Federal Reserve Bank of St. Louis and economics textbooks
