Why coins are harder to exchange than banknotes
An exchange counter does not simply swap a traveler’s money for cash in another currency. It must be able to verify what it accepts, keep it organized, and eventually move or sell it through financial partners. Banknotes are relatively compact and easy to count in large batches. Coins are heavier and bulkier, and their value can be small compared with the effort of handling them.
That imbalance matters after a counter collects foreign change. The coins may need to be sorted by denomination, counted, and transported to a place where they can be used or exchanged. Shipping and processing costs can eat up the value of a bag of coins—especially when the counter has only a modest amount of that currency. A coin can still be valid money in its home country while being impractical for an exchange business to accept abroad.
The change that stays in your pocket
This is why exchange counters often focus on banknotes and may refuse coins, rather than treating every piece of currency as equally tradable. The policy is a business constraint, not proof that the coins are counterfeit or worthless.
For travelers, the result is familiar: a few small coins can be harder to convert than a much larger paper bill. Spending them before leaving, where possible, avoids bringing home money whose face value is real but whose cost of handling makes it difficult to exchange.
