Travel Craft
Being offered your own currency abroad is a sales pitch, not a courtesy
When a foreign card terminal asks whether you want to be charged at home, somebody is choosing the exchange rate, and it is not your bank.
By Arjun Nair3 min read
The question at the terminal is a commercial offer
Pay by card abroad and the machine will often ask whether you would like the amount in the local currency or in the currency of your card. Presented that way it sounds like a helpfulness — see the figure in money you understand — and it is a product with a margin in it.
The mechanism is straightforward. If you accept, the merchant payment provider converts the amount at a rate it chooses, and that rate includes a spread for doing so. Your card is then charged an amount already denominated in your home currency, so your own bank does no conversion at all.
If you decline, the transaction goes through in local currency and the conversion is performed later by the card network and your bank, at a rate you cannot see in advance but which is typically much closer to the wholesale market rate.
Why the offer exists at all
Conversion is a service with a real cost, and somebody was always going to charge for it. What changed is who gets to decide, and the party making the offer at the terminal is the one that benefits from you accepting.
The margin is disclosed, in the sense that a rate or a percentage is usually displayed on screen. It is disclosed at a moment when there is a queue, the screen is small, the choice is framed as convenience and comparing it to any alternative is effectively impossible.
It is worth being precise rather than indignant. This is a legal, disclosed and widely used arrangement, and the criticism is not that it is hidden but that it is presented as a service to the customer when it is primarily a revenue line for the provider.
The general rule and its exceptions
For most travellers with an ordinary card, declining the offer and paying in local currency is the cheaper choice. That holds for card payments, for cash machines and for online bookings on foreign sites that offer to display and charge in your own currency.
The exception is a card that itself applies a poor conversion rate or a large foreign transaction fee. In that case you are choosing between two margins rather than between a margin and none, and the comparison is genuinely uncertain. Anyone who does not know what their own card charges cannot make the comparison at all.
That makes the useful preparation a boring one: find out, before travelling, what your card charges for a foreign transaction, what it charges for a cash withdrawal, and whether the two are treated differently. This is card-specific, it changes, and no article can tell you the answer.
Cash machines add their own layers
A withdrawal abroad can attract as many as three separate charges: a fee from the machine operator, a foreign transaction fee from your own bank, and a conversion margin if you accept the conversion offer on screen. They are levied by different parties and appear at different points.
Some cards treat a foreign cash withdrawal as a cash advance, which can carry both a fee and interest running from the moment of withdrawal rather than from a statement date. That is a feature of the card agreement rather than of travelling, and it is worth knowing before departure rather than after.
The practical consequence is that fewer, larger withdrawals usually cost less than many small ones where fixed fees apply. Against that sits the risk of carrying cash, which is a judgement about where you are rather than about the arithmetic.
Habits that make the whole thing uneventful
Carry more than one means of payment, issued by more than one institution and stored in more than one place. Cards are blocked, machines swallow them and networks fail, and the failure is only serious if everything you have is in the same wallet.
Tell your bank where you are going if it still asks for that, and make sure it can reach you abroad — a fraud check sent to a phone number that does not receive messages on a foreign network is a common and entirely avoidable way to lose access to your own money.
And keep a modest cash reserve for the places cards do not reach: small transport, rural areas, tips, border formalities and the occasional business that simply prefers it. How large that reserve should be is a local question, and it is one worth asking before you arrive rather than after.
Common questions
Is this the same thing as a foreign transaction fee?
No, they are separate and can both apply. The conversion offer at the terminal is made by the merchant side; the foreign transaction fee is charged by your own card issuer under your account terms. Declining the first does not avoid the second.
Does the same choice appear on online bookings?
Frequently, yes. Foreign booking sites often display prices in your home currency by default and convert at their own rate. Where the site allows you to switch to the local currency, doing so usually shifts the conversion back to your bank, although some sites price differently by market as well, which muddies the comparison.
What if I cannot tell which option is cheaper?
Paying in local currency is the safer default for most people, and the way to remove the uncertainty is to know your own card terms before you travel. Since those terms differ between issuers and change over time, this is one of the few money questions where the answer genuinely has to be looked up for your own account.
Features writer, The Next Postcard
Arjun has written about cities, slow routes, rail & road for most of the last decade and prefers a plain explanation to a clever one.
