Definition
Coincidence of wants occurs in a barter system when two parties each have something the other wants, allowing a direct exchange of goods or services without the use of money.
Why It Matters
The concept explains a major limitation of barter: trades require a perfect match of needs between parties. The difficulty of achieving a coincidence of wants led to the development of money as a medium of exchange, which simplifies trade and increases economic efficiency.
Example
If a baker wants milk and a dairy farmer wants bread, a coincidence of wants exists, allowing them to trade directly. If their desires do not align, they cannot complete the trade without using money as an intermediary.