Dynamic currency conversion (DCC) is the offer, at a card terminal or ATM abroad, to charge you in your home currency instead of the local one. It looks helpful because you see a familiar number, but the conversion is done by the merchant or ATM operator, not by your bank, and it can cost more. DCC is only one of several fees that can hit a card payment abroad. This guide explains the three layers, what official sources say, and a checklist to use at the counter and at the machine.
This is general information, not financial advice. We do not rank or recommend banks, cards or apps. Fees depend on your issuer, your account and the country, so check your own account terms.
The short version
- When a terminal or ATM asks whether to pay in your home currency or the local one, the local currency is usually the safer choice. Press decline on the conversion offer.
- A foreign transaction fee from your card issuer is a separate charge. Declining DCC does not remove it.
- ATM withdrawals can carry a fee from the machine owner and another from your own bank. Read your account terms before you travel.
- Check the receipt and your statement for the currency and the exchange rate used.
The three layers of cost
| Layer | Who charges it | What to check |
|---|---|---|
| Dynamic currency conversion | The merchant or ATM operator, when you accept a home-currency price | Decline it and pay in the local currency |
| Foreign transaction fee | Your card issuer or bank, for purchases or cash outside your country or in a foreign currency | Your account terms and fee schedule |
| ATM fees | The ATM owner and sometimes your own bank | The screen before you confirm, and your bank’s terms |
What dynamic currency conversion is
You tap a card and the terminal asks whether to pay in euros or dollars. Choose the dollar option and the merchant’s provider converts the price at its own rate. Choose the local currency and your card network and bank convert the amount, then may add their own fee. Press reports we read cite markups of roughly 3% to 12% on DCC, but those are secondary sources, we could not confirm the figures from a regulator, and the real cost varies by provider.
European Union rules give a clear model of what good practice looks like. According to Regulation (EU) 2019/518 and the European Commission’s guidance as summarised in a search result, you may refuse the conversion offered at a shop or ATM and pay in the local currency, the seller or ATM operator must show the total conversion charge as a percentage markup over the latest European Central Bank reference rate, and your bank must send a reminder about conversion charges after a card payment in another currency. We did not open the regulation text itself, so check it if you rely on it. These rules apply inside the EU, and we could not confirm that other countries follow the same disclosure standard, so decline when you can.
What your own bank may charge
The US Consumer Financial Protection Bureau’s Regulation Z interpretation, which covers credit cards, treats a fee for a purchase or cash advance outside the United States, with a foreign merchant, or in a foreign currency as a finance charge. It names currency conversion and charges on US-dollar transactions made abroad as examples. The fee is measured as the amount above the dollar value calculated at a conversion rate outside the issuer’s control, such as a wholesale market rate. A network fee that the issuer passes straight on to you counts, but one that the issuer absorbs does not.
In plain terms, your issuer can charge a foreign transaction fee even when you pay in dollars abroad. The CFPB’s credit card guide says frequent overseas travellers may consider a card with a lower or no foreign transaction fee. For prepaid cards, the CFPB says some cards charge foreign transaction fees, some cannot be used abroad, and you should check the cardholder agreement. Its page was last reviewed on 6 September 2024 and gives no fee amounts. Our credit cards guide lists what to check without recommending products.
ATM withdrawals
An ATM abroad can add a fee at the machine and your own bank can add another. We did not find an official source that states typical amounts, so we do not quote any. What you can do is read the screen before you confirm, because many machines show a fee or a conversion offer first, and compare it with your bank’s terms. Cash fraud also shapes where to withdraw. Our guide to digital nomad scams covers card skimming and ATM fraud, and UK government advice for Mexico recommends using ATMs in daylight, inside shops or malls, as in our Playa del Carmen and Mexico City guides.
A checklist for the counter and the machine
- Before you travel, read your card’s foreign transaction fee and ATM fee terms.
- At a terminal, choose the local currency when asked.
- At an ATM, decline a home-currency conversion offer and look for a fee notice before you accept.
- Keep the receipt until you have checked the statement.
- If a merchant says the card will only work in your home currency, ask to pay another way, or pay in cash.
- Keep a second card from a different network in a separate place in case one is blocked or lost.
If you work out of a shared space, the same applies to membership payments. Our coworking guide suggests asking which currency the operator charges in.
Frequently asked questions
Should I pay in local currency or my home currency?
Local currency is usually the better choice, because it avoids the merchant’s own conversion. The European Commission’s guidance, as summarised in a search result, says paying in the local currency is often the cheapest option. Your issuer’s foreign transaction fee may still apply.
Is dynamic currency conversion a scam?
It is a legal service in many places, and EU rules require disclosure of the charge. The issue is that it can cost more than the conversion your bank would do, and the choice is sometimes presented as a convenience. Read the screen and decide.
What is a foreign transaction fee?
It is a fee your issuer charges for a purchase or cash withdrawal outside your country or in a foreign currency. Under the CFPB’s Regulation Z interpretation, it counts as a finance charge on credit cards. Its size is in your account terms.
How do I avoid ATM fees abroad?
Read your bank’s terms, check the fee screen before you confirm, and take out larger, fewer withdrawals if your bank charges per transaction and security allows. We found no official source with typical fee amounts.
Does a prepaid or travel card avoid these fees?
Not automatically. The CFPB says some prepaid cards charge foreign transaction fees and some do not work abroad. Read the cardholder agreement before you rely on one.
Sources
- Consumer Financial Protection Bureau, Regulation Z, 12 CFR 1026.4, official interpretation of foreign transaction fees: consumerfinance.gov. Accessed October 2026.
- Consumer Financial Protection Bureau, “Can I use my prepaid card outside of the U.S.?” consumerfinance.gov. Last reviewed 6 September 2024. Accessed October 2026.
- Consumer Financial Protection Bureau, “Know Before You Owe: Credit cards”. consumerfinance.gov. Page modified 12 December 2024. Accessed October 2026.
- Regulation (EU) 2019/518 of the European Parliament and of the Council, on currency conversion charges. eur-lex.europa.eu. Described from a search summary and the European Commission’s FAQ. The regulation text was not opened. Accessed October 2026.
Last reviewed: October 2026. Fees, rules and card terms change and differ by issuer and country. This article is general information, not financial or legal advice, and does not recommend any bank, card or app.
