Dynamic Currency Conversion (DCC) is that offer to "pay in euros" displayed on payment terminals and ATMs abroad: in nearly every case, it costs you money. The right reflex is to decline it and choose the local currency.
What is Dynamic Currency Conversion (DCC)?
DCC, for Dynamic Currency Conversion, is a service offered at the moment of a card payment outside the euro zone. When you pay for a purchase in London, New York or Bangkok, the terminal detects that your card is French and asks you: would you like to pay in the local currency (pound, dollar, baht) or "in your own currency", that is, in euros? The offer seems reassuring: you immediately see the amount in euros and you believe you are avoiding a nasty surprise. In reality, you have just handed the conversion over to the merchant and its payment provider, rather than to your bank or your card network.
The same mechanism is triggered at automated teller machines (ATMs) abroad: after entering your PIN, the screen displays a "guaranteed" amount in euros and invites you to accept that rate. It is exactly the same trap as on an in-store payment terminal.
Why "pay in euros" costs more
When you accept DCC, it is the merchant (or the ATM operator) who sets the exchange rate applied. That rate includes a margin that goes to them, often several percent above the real market rate. Conversely, if you choose to pay in the local currency, the conversion is carried out by your card network (Visa, Mastercard) at a rate much closer to the market rate.
The trap is also psychological. On the one hand, the amount in euros seems "clear" to you and therefore advantageous. On the other hand, some terminals pre-select the euro option or word the question in a way that steers your choice. Finally, be aware that any commission your own bank charges on foreign currency payments will apply in any case: accepting DCC does not remove it, it merely adds an extra margin. To fully grasp the difference between a market rate and a rate applied with a margin, it is helpful to understand the rates before you leave.
The right reflex: always "local currency"
The rule is simple and, in practice, without exception: every time a screen offers you the choice, select the currency of the country you are in. In pounds in the United Kingdom, in dollars in the United States, in Swiss francs in Switzerland, in dirhams in Morocco. You lose nothing by declining the euro, and you avoid a hidden margin on every transaction.
- In a shop or restaurant: if the terminal displays two amounts, decline the euro and confirm the amount in the local currency.
- At the ATM: look for the option "Without conversion" or "Continue without conversion", then confirm the withdrawal in the local currency.
- Online from abroad: if a website offers to charge your card in euros, check and favour the merchant's currency.
On some terminals, the merchant validates on your behalf very quickly: do not hesitate to ask explicitly to pay "in the local currency". It is a right, and an honest merchant will have no objection to it.
Preparing your budget before departure
The best defence against DCC is still not to rely solely on your card. Having a little cash in the country's currency lets you pay small shops, markets, taxis and tips without incurring a conversion margin or withdrawal fees. It is also essential in destinations where cash culture remains strong or card payments are little accepted.
At Paris Change, a bureau de change approved by the ACPR (Banque de France), you exchange with no commission and with a wide choice of currencies: more than 53 currencies available. Our single shop is located at 4 Boulevard Saint-Michel, 75005 Paris, in the heart of the Latin Quarter, accessible via the Saint-Michel metro (line 4) and the RER B and C (Saint-Michel–Notre-Dame). We are open 7 days a week (Monday to Saturday from 9:00 a.m. to 8:00 p.m., and Sunday from 10:00 a.m. to 7:30 p.m.), which is rare in Paris. You can book online for your currency and come and collect it in the shop. Remember the customs rule too: above €10,000 (or the equivalent in foreign currency) in cash entering or leaving the European Union, a customs declaration is mandatory.
Frequently asked questions
Is dynamic currency conversion illegal?
No, DCC is legal and regulated: the merchant must offer you the choice and display the rates. But since the rate applied is set by the merchant's provider with a margin, accepting the euro almost always costs you more than paying in the local currency.
If I decline the euro, how do I know the amount actually charged?
By paying in the local currency, the conversion is done by your card network at a rate close to the market. You will see the exact amount in euros on your bank statement, generally more favourable than the one "guaranteed" by DCC.
Is it better to pay by card or in cash abroad?
The two are complementary. The card is convenient for large amounts, provided you decline DCC; cash in the local currency, exchanged before departure, avoids fees and margins on small everyday expenses.
Before your next trip, prepare your currency with complete peace of mind: book online and come and collect your money, with no commission, at Paris Change, 4 Boulevard Saint-Michel in Paris, open 7 days a week.
