Need for presence of double coincidence of wants: For barter to occur between two people, both would need to have what the other wants.
- Absence of common measure of value: In a monetary economy, money plays the role of a measure of value of all goods, so their values can be measured against each other; this role may be absent in a barter economy.
- Indivisibility of certain goods: If a person wants to buy a certain amount of another's goods, but only has for payment one indivisible unit of another good which is worth more than what the person wants to obtain, a barter transaction cannot occur.
- Lack of standards for deferred payments: This is related to the absence of a common measure of value, although if the debt is denominated in units of the good that will eventually be used in payment, it is not a problem.
- Difficulty in storing wealth: If a society relies exclusively on perishable goods, storing wealth for the future may be impractical. However, some barter economies rely on durable goods like pigs or cattle for this purpose.