Dynamic Currency Conversion.
In plain English
Dynamic currency conversion (DCC) is an option a store, hotel, or ATM abroad gives you to pay in your own currency (say US dollars) rather than the local currency. It sounds convenient because you see the price in dollars right away. But the merchant or their payment processor sets that exchange rate, and they almost always bake in a markup that is worse than what your card network would charge. You can decline DCC and choose to be billed in the local currency instead, which is usually cheaper because your card network does the conversion at its own rate.
01Why it matters
Saying yes to DCC can quietly add several percent to every purchase on a trip, money that goes to the merchant's processor instead of staying in your pocket.
02The math, step by step
You buy a 100 euro dinner in Paris. The card terminal asks if you want to pay in euros or dollars. If you pick dollars (DCC), the rate often carries a markup of a few percent above what your card network would charge (an illustrative figure, since DCC markups vary by merchant and processor). Picking euros lets your card's own network do the conversion, which is normally the better deal.
03What this is NOT
DCC is a markup baked into the exchange rate by the merchant's processor, and you can decline it. A foreign transaction fee is a separate charge from your own card issuer that applies no matter which currency you choose.
04Receipts
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Plain-English answers from our glossary. Receipts included. Never advice.
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