What to Do with Leftover Foreign Currency: Smart Ways to Convert, Spend, or Save It

The Post-Trip Currency Problem

You are home from your trip with a pocketful of foreign coins and notes. The total might be USD 20 or USD 200, but either way, converting it back to your home currency at a poor rate feels wasteful, and keeping it in a drawer for “next time” is a promise that may not be kept for years. There are better options, and the right choice depends on the amount, the currency, and your plans.

Option 1: Keep It for Your Next Trip

If you plan to return to the same country or region within a year or two, keeping the currency is often the best option. There is no conversion loss, no service fee, and no time spent at an exchange counter. The money is usable immediately upon arrival on your next trip.

This is most practical for frequently visited currencies: euros (usable across 19 countries), US dollars (accepted informally in many countries), British pounds, and regional neighbours. A Canadian who visits the US several times a year has no reason to convert leftover USD back to CAD after each trip.

The downside is inflation risk in high-inflation currencies, but for the amounts most travellers hold (under USD 500 equivalent), inflation over a year or two is trivial. The convenience of arriving with local currency outweighs the small inflation loss.

Store the currency in a labelled envelope with the date and trip name. If you accumulate multiple currencies, a small organizer with compartments for each currency prevents the “drawer of mixed notes” problem.

Option 2: Spend It at the Airport Before Flying Home

Many travellers view airport prices as inflated, and they generally are. But using leftover currency to buy something at the airport — food, drinks, reading material, a souvenir — effectively converts the currency at “retail value” rather than at an exchange rate.

Consider a scenario: you have EUR 30 left. If you exchange it back to USD at an airport kiosk with a 10% spread, you get approximately USD 30 (at near-mid-market rates). If you spend the EUR 30 at an airport cafe on a meal that would cost USD 25 at home and USD 32 at the airport, you have effectively used the EUR 30 at close to its purchasing power — better than taking the exchange hit.

Airport spending works best for amounts under USD 50 equivalent. For larger amounts, the “spend it” logic breaks down because you are unlikely to find USD 200 worth of things you genuinely want at the airport.

Option 3: Convert It Back Through a Competitive Service

For larger amounts — USD 100 equivalent or more — converting back through a competitive service may be worthwhile if you do not plan to return.

Do not use airport kiosks for conversions, ever. The buy-back spread is even worse than the sell spread because the kiosk knows you are a captive seller with no alternatives. Airport buy-back rates can be 12–18% worse than mid-market.

Do not use your bank unless it offers competitive rates specifically for buy-back — most do not, applying the same 4–7% spread as on outgoing exchanges. Check the actual rate against the mid-market rate before proceeding.

Online services like Wise allow you to hold foreign currency balances, and you can convert back to your home currency at mid-market rates whenever you choose. If you used Wise during your trip, your leftover balance is already in the app — just convert it. If you have physical cash, you need to deposit it into a bank account first, then transfer to Wise for conversion, which adds a step but delivers much better rates than physical exchange counters.

Option 4: Sell to a Friend or Colleague

Someone in your social circle is probably planning a trip to a country that uses your leftover currency. Selling directly to them at the mid-market rate benefits both parties: they get currency at a better rate than any commercial provider offers, and you get your money back in your home currency with no conversion loss.

This works best for common currencies (EUR, GBP, USD, JPY, AUD) and for amounts that make the social transaction worthwhile. Selling EUR 20 to a colleague is fine; selling THB 500 is probably not worth the awkwardness.

Be transparent about the exchange rate. Use XE.com or Google to find the mid-market rate at the time of the transaction, calculate the equivalent, and round to convenient numbers. Both parties benefit from the simple, fair exchange.

Option 5: Donate to Charity

Many airports and international organizations accept foreign currency donations. UNICEF’s Change for Good program collects leftover currency on flights and at airports, converting it to support children’s programs. Airport chapels, charity collection boxes, and some airline check-in counters also accept spare change.

Donating is most appropriate for small amounts — coins and low-denomination notes that would cost more to convert than they are worth. A handful of foreign coins worth USD 5 is a hassle to exchange and a meaningful donation.

Some charities also accept donations of frequent flyer miles and hotel points, which is a related option for the loyalty program balances you may not use before they expire.

Option 6: Deposit Foreign Currency at Your Bank

A small number of banks accept foreign currency deposits directly into your account, converting at the bank’s buy-back rate. This is convenient — you walk into your branch, hand over the foreign cash, and it appears in your account — but the rate is typically poor. Compare the offered rate against the mid-market rate before proceeding.

Some banks only accept foreign currency from account holders and only in specific denominations. Coins are almost never accepted for deposit because the cost of handling and shipping them exceeds their value for the bank.

What Not to Do

Do not leave currency in a drawer indefinitely. Over years, notes can be demonetized (as happened with certain Indian rupee and euro notes), become obsolete (pre-euro national currencies), or simply lose value to inflation. If you are not going to use it within two years, convert or spend it.

Do not exchange currency at a hotel front desk on checkout. The rates are among the worst available, often 10–15% below mid-market. Hotels offer currency exchange as a courtesy, not a competitive service.

Do not assume all currencies are exchangable. Some countries restrict the export or import of their currency, making it difficult or impossible to exchange outside the country. The Indian rupee, Moroccan dirham, and several African currencies are either non-convertible or restricted. Exchange these before leaving the country, not after.

Do not use a coin-sorting machine or currency exchange kiosk in a shopping mall. These machines charge high fees — often 10–20% — and the convenience is not worth the cost.

Smart Pre-Trip Prevention

The best way to handle leftover currency is to minimize it in the first place. On your last day, spend your remaining cash on meals, transport, and small purchases. Many hotels allow you to pay part of your bill in cash and the rest by card, which is a clean way to use up leftover currency.

If you are within your free ATM withdrawal limit, avoid withdrawing more cash than you need for the remainder of your trip. A small shortfall is easily covered by card. A large surplus becomes the leftover currency problem.

Bottom Line

For small amounts (under USD 50 equivalent), spend it at the airport or donate it. For larger amounts in currencies you will use again, keep it for your next trip. For large amounts you will not use, convert through a competitive online service or sell to a friend. The worst options — airport kiosks, hotel desks, mall machines — should be avoided in all cases.

Last updated: July 2026. Currency exchange rates, buy-back policies, and charity collection programs vary by provider, airport, and country. Check current rates and terms before converting currency. Currency export restrictions apply in some countries; verify local regulations. This does not constitute financial advice.